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Biomedical subjects

F Ghussen

Publications and source records attributed to F Ghussen.

34 records · Page 2Linked to original sources
PubMed1984

[Regional hyperthermic cytostatic perfusion as an alternative in the treatment of malignant soft tissue tumors of the extremities].

From March 1979 through December 1983, 15 patients with soft-tissue sarcomas of the extremities were treated by a local excision and an adjuvant regional hyperthermic cytostatic perfusion. Reversible edema in two patients was the only post-operative complication. 14 patients were disease-free after a median follow-up period of 24.2 months. One female patient developed a local recurrence 10 months following surgery. Based on our results and long-term studies of several authors, the adjuvant regional perfusion appears capable of successfully treating patients with soft-tissue sarcomas of the extremities.

Adult↗
PubMed1984

[Primary malignant melanoma of the esophagus].

Two case reports are given of patients suffering from malignant melanoma of the esophagus, which occurs very rarely. In both patients the leading clinical symptom was dysphagia. Diagnosis was confirmed by endoscopy and biopsy, and surgery was done. One patient died within 3 weeks from pneumonia, the second patient is alive 3 months after resection of the tumor and is free of symptoms.

Aged↗
PubMed1984

[Surgical therapy of malignant soft tissue tumors].

Soft-tissue sarcomas are rare neoplasms originating from the extraskeletal connective tissues of the body. The GTNM-system is recommended for clinical staging. The most effective treatment are radical surgery and the combination of limited surgical removal and high-dose irradiation. In the management of soft-tissue sarcomas of the extremities the isolated hyperthermic perfusion is a successful adjuvant to excision for saving a tumour bearing limb.

Combined Modality Therapy↗
PubMed1982

[A new method for isolated regional perfusion of the liver in vivo. Experimental studies (author's transl)].

The canine liver was isolated from its blood supply and perfused for one hour normothermically be means of a new catheter and a perfusion system consisting of oxygenator, pump and heat-exchanger. Hemodynamic parameters, blood gas analyses, and tissue metabolites were evaluated during experiments. The venous return from the lower body and portal vein (1.113/1min) could be maintained with the catheter system so that the mean systemic arterial pressure was within normal limits. With a perfusion rate through the liver 0,55 ml/min/g and perfusion pressure of 10 cm H2O there was an adequate tissue perfusion; this was also shown by blood gas analyses and tissue metabolite concentrations. Using dye dilution methods the isolation of the liver was tested. This showed a leakage of 6-7% of the total perfusion volume. This new method makes it possible to carry out an isolated, normothermic, liver perfusion for one hour without irreversible tissue damage.

Animals↗
PubMed1982

[A modified dye dilution method to estimate leakage during regional isolated perfusion of the extremity (author's transl)].

In experiments on dogs (n=13) we tested a procedure for estimating leakage during regional perfusion of the extremity by means of a dye dilution method. After systematic application of 0.5% Evans blue solution (0.1 ml/kg b.w.) we measured the dye concentration in plasma by means of a spectral photometer. The plasma volume (5.5 ml/100 gb.w.) and the disappearance rate of the dye (10%/h) were calculated. In a second procedure the supplying artery and vein of the extremity were proximally clamped and distally connected to an extracorporeal circulation unit consisting of oxygenator, pump, and heat exchanger, and the isolation of the extremity was tested. By simulated of leakage it was possible to detect a little amount of shunt of about 1% escaping from isolated region into the systemic circulation. There were no hints to toxicity when the same dye concentration. There were no hints to toxicity when the same dye concentration was applied. The standardized method was using during 132 cytostatic hyperthermic perfusion in man. In 20 patients we determined shunts of less than 5%, in 104 patients shunts between 5 and 10%, and in eight patients shunts of 10-20% of the extracorporeal circulation. The benefits of the described method are simplicity to carry out and missing of toxicity or radiation.

Animals↗
PubMed1981

[Regional hyperthermic perfusion with cytostatic agents in malignant melanoma of the extremities (author's transl)].

From December 1978 to February 1981 91 regional hyperthermic perfusions with melphalan (1.0 or 1.5 mg/kg body weight) were performed in 87 patients with malignant melanoma of the extremities. During a one-hour perfusion with whole blood at an intramuscular temperature of 42 degrees C the flow rate was 264 +/- 62 ml/min in the upper and 495 +/- 42 ml/min in the lower limb. Apart from one intima dissection there were no serious intraoperative complications. Postoperatively one female patient died on the 19th day from acute right heart failure with severe bone marrow suppression. In six patients intransigent metastases appeared after an average of six months. One patient developed lung metastases 7 months postoperatively from which he died. Seventy-nine patients remained free of tumour during the observation period.

Adult↗
PubMed1981

[Regional perfusion of the extremity - experience in 81 patients with malignant melanomas (author's transl)].

From December 1978 through December 1980 a total of 81 patients with malignant melanoma of the extremities were treated by local excision, isolated regional hyperthermic perfusion and regional lymphadenectomy. The extracorporeal circuit was primed with 650 ml whole blood. Flow rates for the lower extremity were 494 +/- 38 ml/min. and 273 +/- 66 ml/min. For the upper extremity. The systemic pressure was 80 +/- 15 mm Hg. Limb temperatures were elevated to 42 degrees C. Intraoperatively there was one case of intima dissection, but no other serious complications. Post operatively one patient died one the 19th day due to congestive heart failure and in one patient a temporary loss of peroneal nerve function was noted. Delay in wound-healing was seen in five patients and 70 patients developed transitory erythema of the extremities. 75 patients are alive and free of disease. Of the 33 patients who underwent more than one operation prior to perfusion, six developed local recurrences or in-transit lesions.

Adult↗
PubMed1981

[Clinical aspects and therapy of hemangiopericytoma].

Hemangiopericytomas are soft tissue sarcomas of vascular origin consisting of pericytes. 484 cases from the literature and 6 from the University Surgical Clinic, Cologne, were studied with regard to age, sex, organ distribution, symptoms and course of disease. The age ranged from 3.5 to 92 years, with a peak in the fifth and sixth decades. Females predominated only slightly. Hemangiopericytomas were most common in the extremities (35%). The symptoms were not characteristic. A painless mass was the first symptom in 60% of patients. The frequency of recurrence was high (32%) and metastases developed in 39% of patients. Wide local excision is the treatment of choice. Hemangiopericytoma appears to be a radioresistant neoplasm, nor is there evidence that chemotherapy is a useful adjunct in its treatment.

Adult↗
PubMed1979

[The effect of methylprednisolone on the course of the experimental tourniquet-shock in dogs (author's transl)].

In experiments in dogs rubber tourniquets were tied around both hind limbs as close to the hip as possible, and a 4-h acute ischemia was induced. With the removal of the tourniquets the tourniquet-shock was produced. In a control group no therapy of the shock was carried out. The animals were observed for 6 h. In a second group, methylprednisolone 40 mg/kg BW was given immediately after revascularisation. In a third group, methylprednisolone 40 mg/kg was given prophylactically 10 min before the tourniquets were applied and therapeutically as soon as the blood circulation was opened. Hemodynamic parameters and renal function were measured to examine the pharmacological effect of methylprednisolone in acute tourniquet-shock. The mortality rate in the control group was 90%, while it was 50% by therapeutic and/or prophylactic application of methylprednisolone. The prophylactic application of methylprednisolone reduced development of metabolic acidosis, hemoconcentration, and hyperkaliemia during ischemia so that a mitigated course of shock was observed.

Animals↗
PubMed1979

[Dye dilution test to determine leakage during regional perfusion in the treatment of malignant tumors of the extremities].

During regional perfusion of the extremity in the dog, the dye Evans blue (T 1824) was used as an indicator to control leakage from the isolated region into the systemic circulation. The rate of elimination of the dye was 10% +/- 2% per hour. A simulated leakage from the perfused region into the systemic circulation was determined with a sensitivity of 1,67%.

Animals↗
PubMedDate not supplied

Hyperthermic perfusion with chemotherapy for melanoma of the extremities.

A prospective randomized study was carried out to evaluate the effectiveness of additional regional cytostatic perfusion of the extremities in patients with malignant melanoma. In a control group (n = 54), the tumors were widely excised, and regional lymph nodes were dissected. The patients in the perfusion group (n = 53) received additional hyperthermic (42 degrees C) perfusion with Melphalan. The disease-free survival time was chosen as the criterion for evaluation. An intermediate analysis revealed a highly significant difference between the 2 groups (21 recurrences in the control group and 4 recurrences in the perfusion group, p less than 0.001). Therefore, the study was discontinued prematurely. In an analysis of the data performed after a median observation time of 5 years and 11 months, 26 recurrences were diagnosed in the control group, whereas 6 recurrences were noted in the perfusion group (p less than 0.001). The retrospective breakdown into different risk groups according to tumor thickness also demonstrates a significant difference. For patients with a primary tumor of 1.5-3.0-mm in thickness, 2 of 25 in the perfusion group and 10 of 25 in the control group have relapsed. For those with a primary tumor of greater than 3.0-mm in thickness, 4 of 28 in the perfusion group and 16 of 29 in the control group have relapsed. Eleven patients in the control group and 3 patients in the perfusion group have died due to metastatic spread of the melanoma (p less than 0.01). The results most clearly demonstrate the benefits of additional hyperthermic cytostatic perfusion.

Arm↗