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Biomedical subjects

R W Sonntag

Publications and source records attributed to R W Sonntag.

At least 19 recordsLinked to original sources
PubMed2001

Fertility and sexual function following orchiectomy and 2 cycles of chemotherapy for stage I high risk nonseminomatous germ cell cancer.

PURPOSE: We investigate fertility and sexual function in patients following orchiectomy and adjuvant cisplatin based chemotherapy for high risk, stage I nonseminomatous germ cell tumor of the testis. MATERIALS AND METHODS: Between 1985 and 1994, 59 patients with stage I nonseminomatous germ cell tumor and poor prognostic factors were treated with 2 cycles of cisplatin, vinblastine and bleomycin, or bleomycin, etoposide and cisplatin after orchiectomy. At least 32 months following treatment all patients were contacted and asked to complete a questionnaire regarding fertility and sexual activity, and to volunteer for a semen and hormonal analysis. RESULTS: Of the 59 patients 49 (83%) completed the questionnaire. Before chemotherapy 18 (37%) patients had fathered children, 6 (12%) were involuntarily childless and none had a major sexual dysfunction. After treatment 11 (22%) patients fathered children, and 5 (10%) were involuntarily childless, with 4 involuntarily childless before chemotherapy. There were no significant alterations in sexual function. Semen analysis in 27 patients was normal in 23, and revealed mild oligospermia in 2 and azoospermia in 2. In 18 patients with hormone analysis median values for luteinizing hormone and free testosterone were normal but median value for follicle-stimulating hormone was slightly increased. CONCLUSIONS: Two cycles of cisplatin based adjuvant chemotherapy do not seem to affect adversely fertility or sexual activity.

Adult↗
PubMed2000

Risk adapted management with adjuvant chemotherapy in patients with high risk clinical stage i nonseminomatous germ cell tumor.

PURPOSE: We propose that patients with high risk, clinical stage I nonseminomatous germ cell tumors receive 2 cycles of chemotherapy initially, instead of undergoing surgery or observation. MATERIALS AND METHODS: A total of 59 patients with high risk, clinical stage I nonseminomatous germ cell tumor received risk adapted adjuvant chemotherapy. Until June 1987, 20 patients were treated with 2 courses of adjuvant cisplatin, vinblastine and bleomycin at 3-week intervals. After June 1987 another 39 patients were treated with 2 cycles of bleomycin, etoposide and cisplatin. RESULTS: Long-term results with this treatment strategy have been excellent with limited morbidity. CONCLUSIONS: Adjuvant chemotherapy may be of particular value in patients with compromised followup.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed1999

Long-term results following adjuvant chemotherapy in patients with clinical stage I testicular nonseminomatous malignant germ cell tumors with high risk factors.

PURPOSE: We determine the efficacy and safety of 2 cycles of adjuvant chemotherapy after orchiectomy in patients with high risk clinical stage I nonseminomatous germ cell tumor of the testis as an alternative to retroperitoneal lymphadenectomy or watchful waiting. MATERIALS AND METHODS: A total of 60 consecutive patients with clinical stage I nonseminomatous germ cell tumor of the testis and 1 or more risk factors were entered into this prospective study. Criteria for high risk were embryonal cell carcinoma, tumor invasion of blood or lymph vessels, or tumor stage pT2 or greater. Chemotherapy consisted of 2 cycles of cisplatin, vinblastine and bleomycin or bleomycin, etoposide and cisplatin. RESULTS: Of the 60 patients 1 refused chemotherapy and 1 was lost to followup 1.5 years after treatment. The remaining 58 patients have been followed for a median of 93 months (range 32 to 146). World Health Organization grade 4 toxicity was observed in 9 of the 116 chemotherapy cycles, and consisted mainly of transient neutropenia and thrombocytopenia. No significant long-term sequelae were detected. There was 1 relapse after 22 months in a patient with adult teratoma in the ipsilateral region of the iliac vessels who remained disease-free 85 months after surgical excision of the lesion. Another patient had a seminoma in the contralateral testicle with interaortocaval lymph node metastases 7.5 years after adjuvant chemotherapy. The remaining 56 men are without relapse or contralateral tumor to date. CONCLUSIONS: We recommend adjuvant chemotherapy as an efficient therapeutic alternative to retroperitoneal lymphadenectomy for high risk nonseminomatous germ cell tumor of the testis.

Adult↗
PubMed1994

Invasion depth is the most important prognostic factor for transitional-cell carcinoma in a prospective trial of radical cystectomy and adjuvant chemotherapy.

The aim of this prospective study was to examine the prognostic pathomorphological factors in urothelial cancer of the urinary bladder. Clinical and morphological variables were evaluated by univariate and multivariate analysis in 70 patients with invasive transitional-cell carcinoma of the bladder (pTI-pT4a). The patients were treated according to a prospective program consisting of radical cystectomy and pelvic-node dissection, either alone or followed by adjuvant cisplatinum chemotherapy. Nodal status was pN0 in 89% of the patients. The median follow-up time was 5.75 years and the 5-year survival was 58%. Among the morphologic variables, deep invasion of the bladder wall and squamous differentiation indicated a poorer prognosis. Differentiation grade, pattern of growth (infiltrating versus expanding), angioinvasive growth, glandular differentiation and concomitant prostate carcinoma (pT1) were not significative factors for survival. By contrast, a significant reduction in mortality rate was found in patients with concomitant carcinoma in situ. Multivariate analysis confirmed that depth of invasion is an independent prognostic factor of outcome. The results confirm the primary importance of tumor stage in the prediction of survival after radical cystectomy.

Adult↗
PubMed1994

Adjuvant cisplatin chemotherapy following cystectomy for bladder cancer: results of a prospective randomized trial.

Between April 1984 and May 1989, 77 eligible patients with invasive, nonmetastatic (stage M0) transitional cell carcinoma of the bladder were stratified after radical cystectomy and pelvic lymph node dissection on the basis of nodal status (stage pN0 versus pN1-2) and were randomly assigned to either observation or postoperative cisplatin chemotherapy (3 courses of 90 mg./m.2 cisplatin given for 3 consecutive days at monthly intervals). Patient eligibility included a creatinine clearance of greater than 60 ml. per minute. There were 40 eligible patients in the control group (median age 61 years) and 37 in the cisplatin group (median age 64 years). In regard to postoperative tumor stage and nodal status, there was no statistical difference between the 2 patient groups. In the cisplatin group 21 patients received the full dose, 9 required dose reduction and 7 refused treatment. Median followup was 5 years 9 months (range 3 to 8 years). Survival analysis showed no significant difference (log rank p = 0.65) between the 40 patients in the control group and the 37 in the cisplatin group. The survival rate at 5 years was 54% (95% confidence interval 39 to 69%) in the control group and 57% (95% confidence interval 40 to 74%) in the treatment group. Patients with cancer confined to the bladder wall (stage pT3a or less) had a 5-year overall survival rate of 70% and those with tumor growth in the perivesical fat or into the prostate (stages pT3b plus pT4a) had a 5-year overall survival rate of 40%. This difference in survival between the low stage subgroup (stages pT3a or less) and the high stage subgroup (pT3b plus pT4a) is highly significant (p = 0.0043). However, no difference between the controls and the cisplatin group was found within either the low or high stage subgroups. The reasons for failing to show a survival benefit from adjuvant high dose cisplatin monotherapy after radical cystectomy are discussed.

Carcinoma, Transitional Cell↗
PubMed1993

Adjuvant chemotherapy after orchiectomy in high-risk patients with clinical stage I non-seminomatous testicular cancer.

In patients with clinical stage I non-seminomatous germ cell tumor the relapse rate seen after orchiectomy alone is approximately 30%. If retroperitoneal lymph node dissection is adopted the relapse rate in patients with histologically negative retroperitoneal nodes is reduced to approximately 10%. Nevertheless, follow-up is still mandatory and 70-80% of clinical stage I patients undergo unnecessary surgery. Metastases and relapses are mostly seen in patients with histological evidence of vascular invasion, growth beyond the testicular capsule and/or embryonal carcinoma in the primary tumor. We conducted a prospective trial of two cycles of cisplatin-based adjuvant chemotherapy for 43 patients with clinical stage I non-seminomatous germ cell tumors and at least one of these risk factors (vascular invasion n = 5, pT > 1 n = 21, embryonal carcinoma n = 42). After a median follow-up of 42 months (12-82 months) 40/41 patients (97.5%) who received the planned chemotherapy remain relapse-free. One patient had surgical excision of a mature teratoma in the ipsilateral iliac region 26 months after orchiectomy and is now disease-free without further treatment after 25+ months. No life-threatening toxicity from chemotherapy was encountered. Two patients who refused the chemotherapy relapsed. In patients with high-risk clinical stage I non-seminomatous testicular cancer two cycles of adjuvant chemotherapy are highly effective in preventing relapses and may be used as an alternative to a 'wait and watch' program or retroperitoneal lymph node dissection, particularly in patients with a compromised follow-up.

Adult↗
PubMed1986

Primary or secondary extragonadal germ cell tumors?

We reviewed 16 patients treated for primary extragonadal germ cell tumors whose testes were initially negative for cancer at palpation. Residues compatible with an occult testicular primary, overlooked at the pretreatment examination, were found in 10 of 12 patients with retroperitoneal germ cell tumors, whereas the testes in all 4 patients with mediastinal germ cell tumors showed no pathological signs. Therefore, we conclude that mere palpation to exclude a testicular primary is not sufficient and the testes of patients with so-called extragonadal germ cell tumors should be examined by all available means, at least by high frequency ultrasound. Orchiectomy is advisable if a focal lesion is found.

Dysgerminoma↗
PubMed1984

Adjuvant chemotherapy after retroperitoneal lymph node dissection.

At present there are no firm data for the routine use of adjuvant chemotherapy in stage II testicular cancer after retroperitoneal lymph node dissection. The possible advantage of adjuvant chemotherapy in terms of reduced relapse rate and continuously disease free survival have to be weighed against the increasing cure rates with modern chemotherapy regimen, applied at the time of advanced and recurrent disease. About 10-15% of stage I and 40-50% of stage II patients relapse after RPLND. Depending on risk factors such as total tumor burden, histology and disease sites and symptoms at the time of presentation, 30-90% of these patients are brought into complete remission with modern chemotherapy (overall between 50 and 70%). Based on these results, a subgroup of patients with a low risk of relapse and a more than 90% chance of cure with salvage chemotherapy may be defined. They do not need adjuvant chemotherapy with its associated toxicity. On the other hand, in a high risk group, which demonstrates poor results with salvage chemotherapy, adjuvant chemotherapy seems to have the potential to significantly improve the cure rate. A third group of patients, presenting with bulky abdominal disease may need immediate postdiagnostic intensive chemotherapy, with surgical exploration only at the time of maximum response. The question of definition of optimal treatment strategies in the various subgroups of patients with testicular cancer can only be solved by ongoing and future randomized clinical trials.

Abdominal Neoplasms↗
PubMed1982

[Prevention of cytostatic-related hair loss by hypothermia of a hairy scalp using a cooling cap].

82 patients treated with adriamycin alone or in combination with other cytostatic agents underwent scalp hypothermia by application of a gel cap. The cap ws applied 10 minutes before the injection of the drugs and maintained until 30 minutes after the administration of the chemotherapy. Prevention of hair loss was achieved in 47 patients (57%). The prophylaxis was successful in 16 out of 21 males (76%) compared with 31 out of 61 female patients (p less than 0.05). No statistically significant difference was found between patients receiving higher or lower doses of adriamycin or between patients wtih or without liver dysfunction. The tolerance of the gel cap was excellent; only one patient did not tolerate the cap because of anxiety during application.

Alopecia↗
PubMed1982

Combination hormonotherapy with tamoxifen and fluoxymesterone in patients with advanced breast cancer relapsing on hormonotherapy.

33 patients were treated with a combination of tamoxifen and fluoxymesterone (10 mg t.i.d. each) after progression on prior hormonotherapy (HT). 6 of 22 patients (27%) exhibiting a partial response (PR) or stable disease (NC) on previous HT responded to the combination (median time to relapse 7 months, range 3.5 to 17+ months). 11 (50%) maintained NC (median duration 5 months, range 2% to 9.5 months). No response has been seen in 11 patients who experienced progressive disease during prior hormonal manipulation or who were not evaluable for response to prior HT. The overall response rate was 18% for the patient population as a whole (responders and nonresponders to previous HT), which most probably would be similar to the response rate if these patients received only fluoxymesterone.

Adult↗
PubMed1981

[Results of, and indications for adjuvant chemotherapy in breast cancer].

As the observation times of current studies using adjuvant chemotherapy in the treatment of operable stage II breast cancer lengthen, the probability of significantly reducing the high risk of developing metastases associated with this stage of the disease is also increasing and should be reflected in improved cure rates. The theoretical basis, prerequisites and presently available results for adjuvant chemotherapy of breast cancer are discussed. Adjuvant combination chemotherapy provides better results than monochemotherapy with Alkeran. While earlier results suggested that adjuvant chemotherapy is especially effective in premenopausal women, newer studies and analyses indicate that appropriate dosage and consistent administration of chemotherapy are of decisive importance. Exact determination and documentation of the tumor stage, and especially the regional lymph node status, is the most important factor in determining the indication for adjuvant chemotherapy. Adjuvant chemotherapy is still best with many unsolved problems. These include the duration, necessary intensity based upon risk factors, and short- and long-term side effects.

Adult↗
PubMed1981

Cis-dichlorodiammineplatinum (II) and VP 16-213 combination chemotherapy for non-small cell lung cancer.

Twenty-three patients with non-small cell lung cancer were treated with a combination of cis-dichlorodiammineplatinum (II) 100 mg/m2 IV on day 1 and VP 16-213 80 mg/m2 IV on days 1-3. Eighteen patients are evaluable for response. Seven partial remissions with a median duration of 3 months (range, 1-13+) have been observed. Three patients exhibit stable disease, and eight patients show tumor progression. Overall survival was 5+ months (range, 1-13+); 7.5 months (range, 3-13+) for responders and 3+ months (range, 1-9+) for non-responders. Hematologic toxicity was acceptable, but poor subjective tolerance (nausea, vomiting, loss of appetite) was the main factor limiting treatment duration.

Adenocarcinoma↗
PubMed1981

Prognostic factors in metastatic breast cancer.

Modern polychemotherapy has decisively changed the spontaneous course and median survival in metastatic stages of breast cancer. The prognosis for patients with the rather unfavorable type of visceral metastatic spread is definitely better now than 10 years ago. The influence of modern polychemotherapy on the survival and course of cases with mainly osseous metastases, however, is more limited. It seems that, in contrast to hormonal therapy, modern polychemotherapy alters the course of more aggressive types of metastases with a poor prognosis into a more favorable form of disease.

Breast Neoplasms↗
PubMed1980

[Phase-II-study with cis-diamminedichloroplatinum (II) in the treatment of advanced malignant lymphomas].

29 patients with advanced malignant lymphoma were included in a phase-II trial conducted by Cancer and Acute Leukemia Group B. The patients received cis-diamminedichloroplatinum (DDP) in a dose of 70 mg/m2 every three weeks. In this still ongoing study, 23 patients are already evaluable. Out of 23 cases partial remission was observed in 6. The main toxicity was profuse vomiting. Myelosuppression and nephrotoxicity were both manageable. Based on these preliminary data, the incorporation of DDP in combination chemotherapy for malignant lymphoma appears to be warranted.

Cisplatin↗
PubMed1980

[Phase-II-study with vindesine (desacetyl-vinblastine-amide-sulfate) in advanced malignant diseases].

53 patients with advanced and measurable cancerr were treated with vindesine in doses of 3 mg/m2 (pretreated) and 4 mg/m2 (non pretreated) i.v. once weekly. 48 patients are evaluable for response: of 14 patients with squamous cell carcinoma of the lung, 1 partial remission (PR), 1 minor response (MR) and 1 no change (NC) were observed. In 5 patients with large cell carcinoma of the lung: 1 NC. In 3 with adenocarcinoma of the lung: 1 MR. One patient with nasopharyngeal carcinoma had progressive disease. Stable disease was observed in a patient with carcinoma of the tongue and in a patient with adenocarcinoma of the esophagus. Four patients with colorectal carcinoma had progressive disease. One MR was observed in a patient with breast cancer, while all of the other 3 patients had progressive disease. One carcinoma of the penis was stable. One MR was observed in a patient with Hodgkin's disease. One PR was observed in a case with no-Hodgkin's lymphoma. A patient with acute leukemia had progressive disease. Among 9 patients with malignant melanoma, 3 had an MR and 1 patient had stable disease. A patient with fibrosarcoma had progressive disease. Observed toxicity included leukopenia, thrombocytopenia, anemia, paresthesias, constipation, jaw pain, nausea, stomatitis, alopecia, loss of taste, pruritus and skin rash, weakness and fatigue.

Adenocarcinoma↗