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Biomedical subjects

F Maloisel

Publications and source records attributed to F Maloisel.

At least 91 records · Page 5Linked to original sources

[Role of coagulation disorders in mesenteric ischemia].

Mesenteric ischemic process can lead to bowel infarction or indolent low-grade ischemia. Inherited thrombophilia represents about 30 to 40% of mesenteric vein thrombosis. Analysis of thromboembolism sites occurring during genetic defect of coagulant factors showed that mesenteric thrombosis is the third localization after lung and legs, in equal incidence with cerebral thrombosis. The genetic defects known to be associated with thrombophilia, as deficiencies of protein C, protein S, antithrombin III, and dysfibrinogenemia, are discussed. A special interest is devoted to resistance to activated protein C. Acquired diseases, as myeloproliferative disease or paroxysmal nocturnal hemoglobinemia, inducing thrombosis are also discussed. Recent advances in both basic and clinical research have provided new insights that may be integrated into diagnostic and therapeutic practices.

Adult↗

Effects of bacterial naso-oropharyngeal colonisation on acute graft-versus-host disease in patients undergoing allogeneic bone marrow transplantation.

The efficacy of gastrointestinal decontamination in reducing the incidence of severe bacterial or fungal infections and of moderate to severe acute graft-versus-host disease (GVHD) has been suggested. We report here a retrospective study of 71 patients grafted consecutively in our institution with bone marrow from HLA genotypically identical siblings. Complete decontamination (plastic isolator or laminar airflow room, sterile nursing and oral antimicrobial drugs) was carried out in all patients. Sixty eight patients were evaluable. Only six patients had aerobic Gram negative rods or anaerobic bacteria in their faeces and 44 of 68 (65%) had yeasts in their faeces. Most patients had oropharyngeal and/or nasal colonisation with bacteria (Gram positive cocci: 39 patients (57%); Gram negative rods: 13 patients (19%)) or yeasts (29 patients (43%)). Thirty nine patients (57%) experienced severe grade > or = II acute GVHD (grade II-IV). A significant relation was found between bacterial oropharyngeal or nasal colonisation and GVHD (P < 0.01) but not between gastrointestinal microflora and GVHD, whatever microorganisms were considered (bacteria, yeasts).

Acute Disease↗

Platin salts-induced hemolytic anemia: cisplatin- and the first case of carboplatin-induced hemolysis.

Anemia is a common side effect of cisplatin, especially after repeated infusions. The primary mechanisms is a myelosuppression caused by cisplatin's interference with iron metabolism, resulting in a lower count of red cell precursors. Some authors report a hemolytic anemia similar to penicillin-induced anemia, in which hemolysis is caused by an antiglobulin antibody directed against red cell membrane-bound cisplatin. The authors report two cases of cisplatin-induced anemia and suggest that the immune-complex hypothesis is responsible for hemolysis. The first case of carboplatin-induced hemolysis is also reported. Mechanisms of hemolysis and clinical practice are discussed.

Adult↗

Intra-abdominal localization of acute leukaemia: report of six cases.

Clinical findings leading to the diagnosis of acute leukaemia result from the consequences of both pancytopenia and tumoral manifestations. Although leukaemic infiltration of hematopoietic organs is common, the involvement of non-hematopoietic abdominal organs remains rare. The authors report a series of six cases, where intra-abdominal localization of acute lymphoblastic or myeloblastic leukaemia was detected at diagnosis or relapse. Chemotherapy may lead to remission or cure if the early abdominal complications are managed with care.

Abdominal Neoplasms↗

[True benign non-parasitic cysts of the spleen: from diagnosis to treatment. Apropos of 5 new cases].

True non parasitary splenic cysts are uncommon. They are characterized histological by an epithelium on the inner surface of the cyst wall. This study presents, about 5 new cases of splenic cysts, the clinical presentation, the difficulties of the diagnosis based on the ultrasound exploration and computed tomography scan investigation, and the different possibilities of management of these cysts. The principal of the treatment is the resection of the totality of a cyst with a diameter higher than 5 cm. A partial splenectomy seems to be the best treatment, whenever possible, especially in children.

Adolescent↗

[Clinical experience with totally implantable venous access systems in pediatric hematology and oncology].

Forty-three children with malignant diseases who received 48 totally implanted venous accesses (TIVA) were retrospectively analyzed. More than half the patients had acute leukemia. Mean age was 6 years 10 months. Mean duration of use of the TIVA was 473 +/- 50 days (range 28 to 1,285 da; median 424 days). Removal of the TIVA was required because of an adverse event in 33% of cases. Main reasons for removal included infection (22.9%), thrombosis (6.25%), and catheter dysfunction (4.16%). Catheter-related infections were most often due to staphylococci (90%), especially S. epidermidis (63%). Infection rate was 0.48 per 1,000 patient-days. Flushing with a vancomycin-heparin solution can be expected to decrease this rate. Selection of the implantation site is discussed. In children under 6 years of age, the cephalic vein and external jugular vein are often frail or absent and are therefore less appropriate than the internal jugular vein or subclavian vein.

Adolescent↗

All-transretinoic acid followed by intensive chemotherapy gives a high complete remission rate and may prolong remissions in newly diagnosed acute promyelocytic leukemia: a pilot study on 26 cases.

We entered 26 patients with newly diagnosed acute promyelocytic leukemia (APL) in a pilot study of all-transretinoic acid (ATRA) followed by intensive chemotherapy. Median age was 46 (range 25 to 63). No patient presented with leukocytes > 10 x 10(9)/L or had the microgranular APL variant. Cytogenetic analysis (25 patients) found a t(15;17) in 24 cases. Patients were scheduled to receive ATRA (45 mg/m2/d) until complete remission, followed by an intensive daunorubicin (DNR) + Ara C course ("4 + 7" course), then three "2 + 5" DNR + Ara C courses and maintenance chemotheapy. However, the "4 + 7" course was administered in emergency if hyperleukocytosis rapidly developed to prevent leukostasis. Twenty-five patients (96%) achieved CR, 14 with ATRA alone and 11 after the addition of the "4 + 7" course on day 2 to 30 of treatment, because leukocytes rapidly increased (9 cases), because of resistance to ATRA (1 case), and development of organomegaly (1 case). The remaining patient died on day 6, from CNS bleeding. Apart from hyperleukocytosis, side effects were usually moderate. In the 11 patients who could be studied in vitro, a very good correlation was found between in vivo and vitro differentiation and proliferation of APL blasts with ATRA. Three patients were allografted after the "4 + 7" course. Four patients did not receive this course but received the subsequent "2 + 5" courses and maintenance. The remaining patients followed the scheduled protocol. Three patients relapsed after 8, 11, and 15 months (including one allografted patient). Two patients died in CR, after 6 and 17 months. The other 20 patients remained in CR after 18+ to 34+ months (median 21). Actuarial disease free interval (DFI) and event free survival (EFS) were 87% and 77%, respectively, after 18 months. These results were compared to those obtained in our previous APL 84 trial with chemotherapy alone in newly diagnosed APL (after excluding patients included in this trial who presented with hyperleukocytosis). In APL 84 trial, the CR rate was 76%, the actuarial DFI and EFS were 59% and 48% after 18 months, respectively. Differences with the pilot study of ATRA followed by chemotherapy were significant for DFI (P = .02), EFS (P = .006), but not for CR rate (P = .08). Although this is a historical comparison, these results suggest that ATRA followed by chemotherapy may prove superior to chemotherapy alone in newly diagnosed APL, by slightly increasing the CR rate, but perhaps more importantly by reducing the relapse rate.(ABSTRACT TRUNCATED AT 400 WORDS)

Actuarial Analysis↗

[Invasive aspergillosis in immunocompromised patients. An analysis of 57 patients].

Fifty seven cases of invasive aspergillosis have been analyzed. Most patients were severely neutropenic. The main underlying diseases were acute leukemia, malignant lymphoma and bone marrow transplantation. The clinical and radiological manifestations and the mycological data rare presented. A dramatic increase of the annual incidence has been observed since 1986. The main causes appear to be the increase in intensity of chemotherapy regimen for acute leukemia and the progressive colonisation of a part the department. Overall mortality is especially high (74%) but the mortality rate appears to decrease since 1989.

Adult↗

[Trichosporon capitatum septicemia. Apropos of 5 cases].

Invasive Trichosporon capitatum infections are seldom reported. We present here five cases of septicemia. All patients had an acute myeloblastic leukemia and were severely neutropenic. They have also been treated before the onset of the fungal infection with broad-spectrum antibiotherapy and also with an oral azole antifungal agent. The role of this antifungal therapy in the development of T. capitatum infection is discussed. The prognosis of T. capitatum infections is severe. Eight of the 10 published cases had a fatal outcome and one of our patients died of the fungal infection in spite of the treatment.

Adult↗

Etoposide, ifosfamide, and methotrexate combination chemotherapy for aggressive non-Hodgkin's lymphomas after failure of the LNH 84 regimen.

We assessed the efficacy and tolerability of VIM (etoposide/ifosfamide/methotrexate) combination therapy in 24 patients who were failing the treatment protocol of the Lymphomes Non Hodgkiniens (LNH) 84 study. Eight patients were refractory to the LNH 84 induction cycles, but ten achieved a partial response (PR). The six remaining patients attained complete response (CR) after LNH 84 induction, but relapsed either during consolidation therapy or after completing the whole program. Twenty-three patients are evaluable for response. The VIM regimen provided a CR rate of 43% and a PR rate of 17%. Treatment failed in nine cases (39%). The CR rate was particularly high (67%) in the group of patients who had PR with LNH 84 induction treatment. Of the ten who had attained CR, five relapsed after 4 to 42 months and five are still alive with no evidence of disease after 29 to 62 months. VIM therapy was well tolerated. A total of 101 VIM courses were given. Myelotoxicity was the most common side effect. Grade 3 or 4 cytopenia was recorded after 11% of the cycles. Among eight infectious episodes recorded, one was fatal. This study demonstrates that CR and long disease-free survival are obtainable with the VIM regimen in a small number of patients failing a high-dose doxorubicin-containing first-line treatment.

Adult↗

Cunninghamella bertholletiae: an uncommon agent of opportunistic fungal infection. Case report and review.

Cunninghamella bertholletiae is a fungus of the Zygomycetes class, Mucorales order. Only very few cases of disseminated infection have been reported. We observed a new case in a 19 years old man with severe aplastic anemia, due to pulmonary primoinfection and hematologic dissemination. This aplastic anemia failed to respond first to an antithymocyte globulin and steroid treatment and then to cyclosporine A. Deferoxamine was infused weekly to prevent iron overload. During a second antithymocyte globulin and steroid treatment, the patient developed bilateral pneumonia. Culture of the broncho-alveolar washing fluid established the diagnosis by isolation of C. bertholletiae. Despite amphotericin B and 5-fluorocytosine intravenous therapy, the patient died of disseminated infection six days after diagnosis, which was confirmed by necropsy. Underlying conditions, diagnosis and treatment are discussed, together with a review of the literature.

Adult↗

High dose melphalan and ABMT with or without abdominal radiotherapy as consolidation treatment for ovarian carcinoma in complete remission or with microscopic residual disease.

We initiated in February 1982 a pilot study of high dose melphalan (HDM) and ABMT as consolidation treatment for ovarian carcinoma. Eleven patients entered into this study; 6 patients received HDM and ABMT (group 1), 5 patients received HDM in combination with flash abdominal radiotherapy followed by ABMT (group 2). Two of 6 group 1 patients and 3 of 5 group 2 patients are still alive with NED more than 3 years after ABMT (58+, 72+, 37+, 39+, 43+) and are hopefully cured. Main toxicity was haematological, we have not observed any death related to therapy. HDM and ABMT compared favorably with other consolidation treatments (abdominopelvic radiotherapy or IP chemotherapy) and merits a larger evaluation.

Abdominal Neoplasms↗

[Embolization of the foramen ovale in metastatic course of abdominal liposarcoma].

The authors report a case of embolization of the foramen ovale by a liposarcoma metastasis in a young woman of 28 years of age. Cardiac impact due to the progress of this rare tumor type remains unusual. The various clinical situations resulting from secondary cardiac locations are recalled. The diagnostic role of ultrasonography and the information which can be provided by nuclear magnetic resonance imaging in this context are also recalled.

Abdominal Neoplasms↗

Intraperitoneal mitoxantrone as consolidation treatment for stage III ovarian carcinoma: a pilot study.

In June 1986 we initiated an intra-peritoneal (IP) mitoxantrone chemotherapy trial as consolidation treatment for ovarian carcinoma in CR or PR after induction therapy (surgery + CHAP combination chemotherapy). Thirty-two patients received 25 mg IP mitoxantrone every 3 wk for 6 months. The most frequent side-effects were abdominal pains; haematological toxicity was minimal. The response was assessed by third-look surgery. In group I patients (patients in histological complete remission at second-look surgery) 12 of 14 evaluable patients remained in CR at the time of third look. Ten of the 12 patients are still alive with no evidence of disease (NED) with a median follow-up of 9.7 months after completion of treatment. In group II patients (microscopic residual disease at second-look surgery), 7 of 9 evaluable patients entered in CR at the time of third look; 6 of the 7 are still alive with NED and with a median follow-up of 14.3 months. In 7 group III patients (macroscopic residual disease at the time of second look) no response to IP therapy was observed and all patients progressed. We conclude that IP mitoxantrone is a valuable consolidation treatment for patients in CR or with minimal residual disease; further follow-up is necessary to assess the impact on duration of remission and survival.

Adult↗