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Biomedical subjects

R Somers

Publications and source records attributed to R Somers.

At least 37 records · Page 2Linked to original sources
PubMed1995

Autologous bone marrow transplantation as compared with salvage chemotherapy in relapses of chemotherapy-sensitive non-Hodgkin's lymphoma.

BACKGROUND: High-dose chemotherapy followed by autologous bone marrow transplantation is a therapeutic option for patients with chemotherapy-sensitive non-Hodgkin's lymphoma who have relapses. In this report we describe a prospective randomized study of such treatment. METHOD: A total of 215 patients with relapses of non-Hodgkin's lymphoma were treated between July 1987 and June 1994. All patients received two courses of conventional chemotherapy. The 109 patients who had a response to chemotherapy were randomly assigned to receive four courses of chemotherapy plus radiotherapy (54 patients) or radiotherapy plus intensive chemotherapy and autologous bone marrow transplantation (55 patients). RESULTS: The overall rate of response to conventional chemotherapy was 58 percent; among patients with relapses after chemotherapy, the response rate was 64 percent, and among those with relapses during chemotherapy, the response rate was 21 percent. There were three deaths from toxic effects among the patients in the transplantation group, and none among those in the group receiving chemotherapy without transplantation. The two groups did not differ in terms of prognostic factors. The median follow-up time was 63 months. The response rate was 84 percent after bone marrow transplantation and 44 percent after chemotherapy without transplantation. At five years, the rate of event-free survival was 46 percent in the transplantation group and 12 percent in the group receiving chemotherapy without transplantation (P = 0.001), and the rate of overall survival was 53 and 32 percent, respectively (P = 0.038). CONCLUSIONS: As compared with conventional chemotherapy, treatment with high-dose chemotherapy and autologous bone marrow transplantation increases event-free and overall survival in patients with chemotherapy-sensitive non-Hodgkin's lymphoma in relapse.

Adolescent↗
PubMed1995

Roles of radiotherapy and smoking in lung cancer following Hodgkin's disease.

BACKGROUND: Several studies have shown that survivors of Hodgkin's disease have increased risk of lung cancer, but the factors responsible for this excess risk are not well known. PURPOSE: This study was undertaken to investigate the effects of radiation dose, chemotherapy, and smoking on the risk of lung cancer following treatment of Hodgkin's disease. METHODS: We conducted a case-control study in a cohort of 1939 patients treated for Hodgkin's disease from 1966 through 1986 in The Netherlands. Detailed treatment information was collected from the medical records for 30 case patients with lung cancer following Hodgkin's disease and 82 matched control subjects who had not developed lung cancer. Multiple sources were used to obtain as complete smoking histories of the study participants as possible. For each case-control set, the radiation dose received by the area of the lung where the case patient developed the tumor was estimated on the basis of radiotherapy charts and experimental simulations of treatments. The estimates of relative risk (RR) for lung cancer associated with specific exposures were obtained from logistic regression methods, and all tests of statistical significance were two-sided. RESULTS: A statistically significant increase in risk of lung cancer was observed with increasing radiation dose (P for trend = .01) with an RR of 9.6 (95% confidence interval [CI] = 0.93-98) for patients who received 9 Gy or more compared with those who received less than 1 Gy. Patients who smoked more than 10 pack-years after the diagnosis of Hodgkin's disease had a sixfold increase in the risk of lung cancer compared with patients who smoked less than 1 pack-year (P = .03). Positive interaction on a multiplicative scale was observed between the carcinogenic effects of smoking and radiation. The increase in risk of lung cancer with increasing radiation dose was much greater among the patients who smoked after diagnosis of Hodgkin's disease than among those who refrained from smoking (P = .04). There was no increase in lung cancer risk in relation to the number of cycles of chemotherapy or the cumulative doses of the drugs mechlorethamine and procarbazine. CONCLUSIONS: The excess risk of lung cancer in Hodgkin's disease patients treated with radiotherapy is related to the radiation dose received by the affected area of the lung. Smokers experience a significantly greater risk attributable to radiotherapy than nonsmokers. IMPLICATIONS: Physicians in charge of patient treatment should make a special effort to dissuade Hodgkin's disease patients from smoking after receiving radiotherapy.

Adult↗
PubMed1995

Efficacy of four different regimens in 64 mantle-cell lymphoma cases: clinicopathologic comparison with 498 other non-Hodgkin's lymphoma subtypes. European Organization for the Research and Treatment of Cancer Lymphoma Cooperative Group.

PURPOSE: Before recognizing mantle-cell lymphoma (MCL) as a distinct entity, these patients were grouped into low-grade (LG) or intermediate-/high-grade categories (IGHG) according to the Working Formulation and received various therapies. This was a unique opportunity to evaluate characteristics, behavior, response to treatment, and outcome of patients with MCL from two phase III trials conducted by the European Organization for the Research and Treatment of Cancer (EORTC): EORTC 20855 IGHG and EORTC 20856 LG. PATIENTS AND METHODS: After histologic review, 64 diagnosed MCL patients (29 IGHG and 35 LG) were compared with other patients in their respective trials. In the IGHG group, patients received cyclophosphamide, doxorubicin, teniposide (VM26), prednisone, vincristine, and bleomycin (CHVmP-VB) or modified doxorubicin, cyclophosphamide, etoposide (VP 16), mechlorethamine, vincristine, procarbazine, and prednisone (ProMACE-MOPP). In the LG group, after receiving cyclophosphamide, vincristine, and prednisone (CVP) induction, patients were randomized between maintenance treatment with interferon alfa-2a (IFN) or no further treatment. RESULTS: MCL patients compared with IGHG subtypes showed a similar overall survival and response rate, but shorter duration of response and progression-free survival. Comparing with LG patients, their response rate, duration of response, and progression-free survival showed no difference, while their overall survival was nearly twice shorter. MCL patients treated with CHVmP-VB had the longest survival. No treatment showed any significant improvement in terms of progression-free survival. CONCLUSION: These data confirm that MCL represents a clinicopathologic entity. In terms of survival, it behaves like IGHG subtypes, while in terms of progression-free survival, it behaves like LG lymphoma. It is still not clear which first-line treatment offers patients with MCL the best chance to obtain both a complete response (CR) and a long-term survival.

Adolescent↗
PubMed1995

Doxorubicin versus CYVADIC versus doxorubicin plus ifosfamide in first-line treatment of advanced soft tissue sarcomas: a randomized study of the European Organization for Research and Treatment of Cancer Soft Tissue and Bone Sarcoma Group.

PURPOSE: The aim of this trial was to compare the activity and toxicity of single-agent doxorubicin with that of two multidrug regimens in the treatment of patients with adult advanced soft tissue sarcomas. PATIENTS AND METHODS: This was a prospective randomized phase III trial performed by 35 cancer centers within the Soft Tissue and Bone Sarcoma Group of the European Organization for Research and Treatment of Cancer (EORTC). Six hundred sixty-three eligible patients were randomly allocated to receive either doxorubicin 75 mg/m2 (arm A), cyclophosphamide, vincristine, doxorubicin, and dacarbazine (CYVADIC) (arm B), or ifosfamide 5 g/m2 plus doxorubicin 50 mg/m2 (arm C). RESULTS: The overall response rate was 24% (95% confidence interval, 20.7% to 27.3%) among eligible patients and 26% among assessable patients. No statistically significant difference was detected among the three study arms in terms of response rate (arm A, 23.3%; arm B, 28.4%; and arm C, 28.1%), remission duration (median, 46 weeks on arm A, 48 weeks on arm B, and 44 weeks on arm C), or overall survival (median, 52 weeks on arm A, 51 weeks on arm B, and 55 weeks on arm C). The degree of myelosuppression was significantly greater for the combination of ifosfamide and doxorubicin than for the other two regimens. Cardiotoxicity was also more frequent in this arm, but other toxicities were similar. CONCLUSION: In advanced soft tissue sarcomas of adults, single-agent doxorubicin is still the standard chemotherapy against which more intensive or new drug treatments should be compared. Combination chemotherapy cannot be recommended outside a controlled clinical trial with the exclusion of some subsets of sarcoma patients for whom significant tumor volume reduction may be an important end point of a chemotherapy regimen.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed1995

Cathepsins D, B and L in breast carcinoma and in transformed human breast epithelial cells (HBEC).

An increased expression of lysosomal enzymes, cathepsin (Cat) D, Cat B and Cat L, was observed in various human tumours and after in vitro cell transformation. To establish possible co-ordination in their expression, all three cathepsins were determined in human breast tumours and in transformed human breast epithelial cells (HBEC). In breast carcinoma (n = 120) all three cathepsins, determined immunochemically and by enzymatic activity, were increased compared to normal breast tissues. The activities, correlated with the corresponding protein masses for Cat D (r = 0.77, p < 0.01), but not for Cat B and Cat L. Significant increase in Cat B activity was observed in stage II compared to stage I tumours, and Cat L activity in stage III compared to stage II tumours, but no significant correlation of cathepsin protein with tumour stage (TNM) was established. No significant correlation between Cat D and the cysteine cathepsins B and L was observed. Similarly, Cat D, Cat B and Cat L levels did not correlate in the in vitro system, e.g. in the five transformed HBEC, such as evolved after dimethylbenz(a)anthracene treatment and c-Has-ras oncogene transfection of diploid MCF-10F cell line (Calaf et al., 1993). Transformed cells showed increased anchorage-independent growth and invasive capability (MCF-10 < MCF-10FTras < D3 < D3-1 < D3-1Tras). The intracellular level of Cat D was not related to cell invasiveness, while total cellular Cat B and Cat L increased 13 fold and 4 fold, respectively, in the most invasive cell line, D3-1Tras compared to MCF-10F.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1994

Preliminary results of the EORTC-GPMC controlled clinical trial H7 in early-stage Hodgkin's disease. EORTC Lymphoma Cooperative Group. Groupe Pierre-et-Marie-Curie.

In this phase III trial, 770 patients with clinical stage I-II Hodgkin's disease (HD) have been enrolled since November 1988. Preliminary results are given for the 605 (79%) patients who have completed their initial therapy. Patients were grouped according to 6 pretreatment prognostic characteristics. In the very favourable (VF) group, treatment consisted of mantle field alone. In the favourable (F) group, patients were randomized to either subtotal nodal irradiation (STNI), or 6 cycles of EBVP (epirubicin, bleomycin, vinblastine, prednisone) followed by involved-field irradiation (IF-RT). Unfavourable (U) patients were randomized to either 6 cycles of EBVP plus IF-RT, or to 6 cycles of MOPP/ABV hybrid plus IF-RT. Of the 35 VF patients, none have progressed during radiotherapy. Four patients relapsed and were salvaged. Three-year failure-free survival (FFS) was 82%; overall survival (OS) was 100%. Of the 254 F patients, 130 were treated with STNI and 124 with EBVP plus IF-RT. At 3 years, FFS rates were 81% (1 progression, 14 relapses) and 79% (5 progressions, 8 relapses), respectively. Corresponding OS rates were 99% and 100%. Of the 316 U patients, 160 received EBVP and 156 MOPP/ABV. At 3 years, FFS rates were 72% (18 progressions, 20 relapses) and 88% (7 progressions, 6 relapses), respectively (p < 0.001). Although OS rates were identical (92%), the entry in the U-EBVP arm was stopped in November 1992. We conclude that a treatment strategy based on prognostic factors allows the use of less aggressive treatment in favourable patients.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1994

EORTC study of non-Hodgkin's lymphoma: phase III study comparing CHVmP-VB and ProMACE-MOPP in patients with stage II, III, and IV intermediate- and high-grade lymphoma.

In the EORTC lymphoma cooperative group, a randomized phase III study was done for patients with stage II, III, IV intermediate- and high-grade lymphoma. Eight courses of CHVmP-VB were compared to eight courses of ProMACE-MOPP. Response was evaluated after 8 courses. Of 430 patients entered, 346 were eligible for this first analysis. Additional radiotherapy was given at initial large masses or residual disease after three courses. Response rate was higher in the CHVmP-VB arm in comparison to the ProMACE-MOPP arm, 82% vs. 65% (p < 0.0005). In the ProMACE-MOPP arm, treatment had to be interrupted because of patient refusal in 7% of the patients. So far there has been no significant difference in freedom from progression at 5 years (49% vs. 47%), relapse-free survival (59% vs. 59%), or overall survival (55% vs. 49%). Patients with early response at 4 courses showed no better RFS in comparison with late responders between 4 and 8 courses. The International Index, based on age, stage, SLDH, performance status, and number of extranodal localizations showed a good prognostic significance in this series of patients.

Adult↗
PubMed1994

A randomized study in stage IIIB and IV Hodgkin's disease comparing eight courses of MOPP versus an alteration of MOPP with ABVD: a European Organization for Research and Treatment of Cancer Lymphoma Cooperative Group and Groupe Pierre-et-Marie-Curie controlled clinical trial.

PURPOSE: We report a prospective randomized study comparing the relative efficacy of alternating chemotherapy mechlorethamine, vincristine, procarbazine, and prednisone/doxorubicin, bleomycin, vinblastine, and dacarbazine (MOPP/ABVD) with the standard MOPP chemotherapy in patients with stage IIIB and IV Hodgkin's disease (HD). The purpose is to study the influence of time of remission on clinical outcome. PATIENTS AND METHODS: After two courses of MOPP, patients were randomized to receive six further courses of MOPP, or two courses of ABVD followed by two courses of MOPP and two courses of ABVD. Radiotherapy was given to areas presenting with masses > or = 5 cm and to residual masses after course no. 4. Evaluation of response (complete remission [CR]) took place after two courses (CR2), after four courses (CR4), at the end of chemotherapy (CR8), and after additional radiotherapy (CR(CT + RT)). Logistic regression analysis was used to study prognostic factors for response at the end of chemotherapy. Cox analysis was used to study prognostic factors for survival. Two hundred seven patients were registered, 192 (93%) of whom were randomized. RESULTS: The CR rate at the end of chemotherapy (CR8) was similar in both arms (57% v 59%). However, there were more progressions in the MOPP arm compared with the MOPP/ABVD arm (23% v 8%, P = .014). A significantly higher failure-free survival (FFS) rate was found in the MOPP/ABVD arm (60% v 43% at 6 years, P = .025). There was no difference in the relapse-free survival (RFS) or survival rate. Of patients not in CR4, only 28% still reached a CR8. RFS at 6 years of patients with CR4 (69%) was not different from that of patients with CR8 (68%); patients with a CR(CT + RT)) had a lower RFS rate (48%). CR4 (P < .001) predicted strongly for final remission at the end of chemotherapy. Cox analysis showed that age more than 50 years, six or more involved lymph node areas, no CR by the fourth cycle, chemotherapy with MOPP alone, and no radiotherapy were unfavorable factors for survival. CONCLUSION: MOPP/ABVD chemotherapy significantly improved response and FFS rates, but had no influence on RFS and survival rates. Early CR (CR4) is an important factor for final remission and might be used to select a group of patients with a good prognosis.

Adolescent↗
PubMed1994

Second cancer risk following Hodgkin's disease: a 20-year follow-up study.

PURPOSE: To determine risk factors for the development of second primary cancers during long-term follow-up of patients with Hodgkin's disease (HD). PATIENTS AND METHODS: We assessed the risk of second cancers (SCs) in 1939 HD patients, who were admitted to the Netherlands Cancer Institute (NKI; Amsterdam) or the Dr Daniel den Hoed Cancer Center (DDHK; Rotterdam) between 1966 and 1986. For 97% of the cohort, we obtained a medical status up to at least January 1989. The median follow-up duration of the patients was 9.2 years; for 17% of the patients, follow-up was longer than 15 years. For more than 98% of all second tumors, the diagnosis was confirmed through a pathology report. RESULTS: In all, 146 patients developed a SC, compared with 41.9 cases expected on the basis of incidence rates in the general population (relative risk [RR], 3.5; 95% confidence interval [CI], 2.9 to 4.1). The mean 20-year actuarial risk of all SCs was 20% (95% CI, 17% to 24%). Significantly increased RRs were observed for leukemia (RR, 34.7; 95% CI, 23.6 to 49.3), non-Hodgkin's lymphoma (NHL) (RR, 20.6; 95% CI, 13.1 to 30.9), lung cancer (RR, 3.7; 95% CI, 2.5 to 5.3), all gastrointestinal cancers combined (RR, 2.0; 95% CI, 1.2 to 3.1), all urogenital cancers combined (RR, 2.4; 95% CI, 1.4 to 3.7), melanoma (RR, 4.9; 95% CI, 1.6 to 11.3), and soft tissue sarcoma (RR, 8.8; 95% CI, 1.8 to 25.8). As compared with the general population, the cohort experienced an excess of 63 cancer cases per 10,000 person-years. Cox-model analysis indicated the following as significant risk factors for developing leukemia: first-year treatment with chemotherapy (CT), follow-up treatment with CT, age at diagnosis of HD greater than 40 years, splenectomy, and advanced stage. Patients treated with CT in the 1980s had a substantially lower risk of leukemia than patients treated in the 1970s (10-year actuarial risks of 2.1% and 6.4%, respectively; P = .07). Significant risk factors for NHL were older age, male sex, and combined modality treatment as compared with either modality alone. Risk of lung cancer was strongly related to radiotherapy (RT), while an additional role of CT could not be demonstrated. After more than 15 years of follow-up, women treated with mantle-field irradiation before age 20 years had a greater than forty-fold increased risk of breast cancer (P < .001). CONCLUSION: While the long-term consequences of HD treatment as administered in the 1960s and 1970s are still evolving, it is promising that patients who received the new treatment regimens introduced in the 1980s have a much lower leukemia risk than patients treated in earlier years. Beginning 10 years after initial RT, the follow-up program of women who received mantle-field irradiation before age 30 years should routinely include breast palpation and yearly mammography.

Actuarial Analysis↗
PubMed1994

Leukemia risk following Hodgkin's disease: relation to cumulative dose of alkylating agents, treatment with teniposide combinations, number of episodes of chemotherapy, and bone marrow damage.

PURPOSE: The development of leukemia is one of the most serious long-term complications of modern treatment for Hodgkin's disease (HD). This study was undertaken to examine the relation between risk of leukemia and various treatment factors (including cumulative dose of cytostatic drugs and interaction with radiotherapy [RT]), while also assessing the effect of treatment-induced bone marrow damage. PATIENTS AND METHODS: We conducted a case-control study in a cohort of 1,939 patients treated for HD between 1966 and 1986 in the Netherlands. Detailed information from the medical records was obtained for 44 cases of leukemia and 124 matched controls, in whom leukemia had not developed. RESULTS: The cumulative dose of mechlorethamine was the most important factor in determining leukemia risk. As compared with patients who received RT alone, patients treated with six or fewer cycles of combinations including nitrogen mustard (mechlorethamine) and procarbazine had an eightfold increased risk of developing leukemia (P = .08), while patients who received more than six of such cycles had a greater than 40-fold excess risk (P < .001). Treatment with lomustine or a combination of teniposide and cyclophosphamide also significantly increased the risk of leukemia. Patients who had received chemotherapy (CT) during two or more time periods had a nearly 40-fold increased risk of leukemia as compared with patients treated only once. The extent of RT did not further increase leukemia risk among patients who also received CT. A significantly increased risk of leukemia was found among patients with low platelet counts, both in response to initial therapy and during follow-up. Patients who experienced 2 or more half-year periods with platelet counts less than 75 x 10(6)/mL had an approximately fivefold risk of developing leukemia, and a similar risk increase was found for patients who responded to initial treatment with a > or = 70% decrease of platelet counts (as compared with patients who had a < or = 50% decrease). CONCLUSION: In addition to mechlorethamine, lomustine and teniposide combinations were also linked to an elevated risk of developing leukemia. Since the number of CT episodes was found to be a strong determinant of leukemia risk, it is important that new therapies for HD continue to yield high initial cure rates. Further studies are warranted to investigate whether patients at high risk for developing leukemia may be identified from the response of their platelets to initial therapy for HD.

Adult↗
PubMed1994

Tumour lysis syndrome and acute renal failure in Burkitt's lymphoma. Description of 2 cases and a review of the literature on prevention and management.

Two patients with Burkitt's lymphoma and acute renal failure are described, one with acute uric acid nephropathy and the other with acute renal failure due to hyperphosphataemia. Renal insufficiency caused by the precipitation of calcium phosphate salts only occurs after starting treatment of the lymphoma; uric acid nephropathy can also be present in an untreated patient. A uric acid/creatinine ratio in a random urine sample may help to confirm the diagnosis of acute uric acid nephropathy. Vigorous hydration, allopurinol and alkalinization of the urine have been advocated to prevent uric acid nephropathy. However, alkalinization may accelerate phosphate precipitation in the kidneys and thereby induce renal failure. Xanthine nephropathy may develop as a consequence of high doses of allopurinol. The administration of large volumes of fluid therefore remains the keystone in prevention of the tumour lysis syndrome.

Acute Kidney Injury↗
PubMed1993

The clinical spectrum and treatment of primary non-Hodgkin's lymphoma of the stomach.

BACKGROUND: Primary non-Hodgkin's lymphoma (NHL) of the stomach is a rare disease; diagnosis may be difficult and the method of treatment is at debate, especially the role of surgery. We therefore evaluated clinical findings, in particular endoscopic diagnosis and long-term results of various treatment strategies, especially the effect of the stomach-saving procedure with radiotherapy alone, in patients with stage I and II NHL of the stomach over a 20 year period (1970-91). PATIENTS AND METHODS: A series of 119 consecutive patients (71m + 48f, median age 62 years) were studied: 80 patients in stage I and 39 in stage II. Treatment schedules were: group A: standard radiotherapy alone, after clinical staging (n = 46); group B: gastric resection followed by standard radiotherapy (n = 28); group C: various combinations of resection, radiotherapy plus or minus chemotherapy (n = 45). Since 1978 surgery was no longer advocated: our resection rate dropped from 83% to 38%. RESULTS: Symptoms and signs were non-specific: epigastric pain (81%), nausea (33%), vomiting (24%) and weight loss (66%). Haemorrhage or perforation at presentation were unusual, in 14 (12%) and 5 (4%) cases, respectively. At endoscopy 3 main patterns were recognized: ulceration (34%); diffuse infiltration (18%) and a polypoid mass (37%). Endoscopic biopsies were diagnostic in 92%, including 11% after repeated endoscopy. Treatment results were excellent for stage I: local control in 93%, 5-year survival 70%; in stage II the results were less favorable: 57% and 37%, respectively. Recurrences were only seen in 17 cases, among which 10 cases were extra-abdominal. According to treatment schedule, results were similar in group A (n = 46), with radiotherapy alone, and group B (n = 28), with resection plus radiotherapy, leading to a 5-year overall survival of 71% and 82%, respectively (no significant difference). Severe complications of treatment were infrequent: one perforation, another with a fatal haemorrhage in group A. In group C (n = 45) various individualized schemes were applied, usually palliative either due to large tumour extent or patients of old age and poor condition, leading to a 5-year survival of only 31%. CONCLUSIONS: Clear patterns were recognized at endoscopy, and diagnosis on endoscopic biopsies was possible in the vast majority (92%); in clinical stage I radiotherapy alone is effective, safe and well tolerated.

Adult↗
PubMed1993

Primary lymphoma of mucosa associated lymphoid tissue (MALT) in the parotid gland.

Malignant lymphoma of the parotid gland is a rare condition. In a series of 365 malignant lymphomas of the head and neck seven cases (1.9%) presented with a stage I/II MALT lymphoma of the parotid gland, originating from Mucosa Associated Lymphoid Tissue (MALT) and exhibiting the histological criteria of a centrocyte-like cell proliferation, surrounding reactive B-cell follicles. There were six men and one woman with a mean age of 50.1 years. In four patients the parotid mass was present for more than one year. Complete remission was obtained by radiotherapy (40 Gy). Prognosis for this group was found to be favourable with a follow-up ranging from 1.5 to 10 years.

Adult↗
PubMed1993

Isolated primary oesophageal involvement by lymphoma: a rare cause of dysphagia: two case histories and a review of other published data.

Primary oesophageal involvement by lymphoma in two patients, one with Hodgkin's disease and one with non-Hodgkin's lymphoma is reported. In both, there were no manifestations of the disease outside the oesophagus, which is exceptionally rare. In the patient with non-Hodgkin's lymphoma, the oesophageal tumour was the first manifestation of lymphoma. Shortly after admission he developed a tracheo-oesophageal fistula from which he died before treatment could be started. In the patient with Hodgkin's disease, isolated oesophageal lymphoma was the first relapse after a 13 year interval free of disease. As he had previously received mediastinal irradiation he was treated with combination chemotherapy that resulted in long term survival (> five years). Several other long term survivors have been described but only after radiotherapy or surgery. These findings suggest that systemic chemotherapy may be equally successful in treating isolated primary oesophageal lymphoma, thus offering an alternative for those patients in whom local treatment is contraindicated.

Adult↗
PubMed1993

Granulocyte-macrophage colony-stimulating factor allows safe escalation of dose-intensity of chemotherapy in metastatic adult soft tissue sarcomas: a study of the European Organization for Research and Treatment of Cancer Soft Tissue and Bone Sarcoma Group.

PURPOSE: This study was designed to test the feasibility of administering doxorubicin at an optimal dose-intensity (> 70 mg/m2 per 21 days) in combination with ifosfamide under recombinant human granulocyte-macrophage colony-stimulating factor (rhGM-CSF) cover in patients with metastatic soft tissue sarcomas. PATIENTS AND METHODS: One hundred four eligible patients (of 111 entered) in 16 centers received doxorubicin 75 mg/m2 plus ifosfamide 5 g/m2 every 3 weeks for up to seven cycles. rhGM-CSF (250 micrograms/m2) was administered once or twice daily by subcutaneous injections for up to 14 days between cycles of chemotherapy. RESULTS: Full protocol dose-intensity of chemotherapy was administered to the majority of patients with only 15 of 293 cycles being complicated by febrile episodes that required hospitalization. There were two treatment-related deaths: one from septicemia and one from cardiac failure. The main toxicities attributed to rhGM-CSF were pruritus and rash. A 45% response rate (10% complete remission [CR]) was seen, with a median response duration of 9 months and median survival of 15 months. CONCLUSION: This high-dose regimen of chemotherapy was feasible under rhGM-CSF cover and produced a higher response rate and median survival than previously seen by the European Organization for Research and Treatment of Cancer (EORTC) Soft Tissue Sarcoma Group. A randomized phase III study is now underway comparing this regimen with conventional-dose doxorubicin/ifosfamide to test the dose-response relationship.

Adult↗
PubMed1993

Second cancer risk following testicular cancer: a follow-up study of 1,909 patients.

PURPOSE: Improved survival in testicular cancer has been accompanied by concern about long-term side effects of therapy. We assessed the evolution of second cancer (SC) risk over a prolonged follow-up period, which has been rarely studied in large patient series. PATIENTS AND METHODS: We estimated the risk of SCs in 1,909 patients with testicular cancer diagnosed in the Netherlands from 1971 to 1985. Complete medical information was obtained up to at least January 1988 for 92% of patients. Median follow-up was 7.7 years. For 89% of second tumors the diagnosis was confirmed through review of histologic slides; for an additional 8%, the diagnosis was verified by pathology reports only. RESULTS: Seventy-eight patients developed a SC 1 year or more after start of treatment, as compared with 47.6 expected on the basis of incidence rates in the general population (relative risk [RR], 1.6; 95% confidence interval [CI], 1.3 to 2.1). The mean 15-year actuarial risk of all SCs was 9.8% (95% CI, 7.5% to 12.8%). Significantly increased RRs were observed for all gastrointestinal cancers combined (RR, 2.6; 95% CI, 1.7 to 3.9), stomach cancer (RR, 3.7; 95% CI, 1.8 to 6.8), contralateral testicular cancer (CLTC) (RR, 35.7; 95% CI, 21.8 to 55.2), and leukemia (RR, 5.1; 95% CI, 1.4 to 13.0). Patients who had received irradiation to the paraaortic lymph nodes and who survived testicular cancer for more than 5 years were at particularly high risk of developing stomach cancer (RR, 6.9; 95% CI, 3.3 to 12.7). The median interval between the diagnosis of testicular cancer and stomach cancer was 12.4 years. Patients treated with chemotherapy (CT) did not experience an increase in SCs in general. Indeed, CT-treated patients, as compared with those who received radiotherapy (RT), or surgery alone, had significantly reduced risk of CLTC. This finding might be attributed to an eradicating effect of CT on carcinoma in situ or subclinical CLTC. The excess risk of leukemia was not found to be clearly related to CT. CONCLUSION: Testicular cancer patients who receive RT experience elevated risk of gastrointestinal tumors. CT does not seem to increase SC risk and may even decrease the risk of a CLTC. Following testicular cancer, the 15-year actuarial risk of all SCs is only about half the risk experienced by patients with Hodgkin's disease.

Adult↗