Microwave Hyperthermia of Brain Tumors: A 2D Assessment Parametric Numerical Study.

Due to the clinically proven benefit of hyperthermia treatments if added to standard cancer therapies for various tumor sites and the recent development of non-invasive temperature measurements using magnetic resonance systems, the hyperthermia community is convinced that it is a time when even patients with brain tumors could benefit from regional microwave hyperthermia, even if they are the subject of a treatment to a vital organ. The purpose of this study was to numerically analyze the ability to achieve a therapeutically relevant constructive superposition of electromagnetic (EM) waves in the treatment of hyperthermia targets within the brain. We evaluated the effect of the target size and position, operating frequency, and the number of antenna elements forming the phased array applicator on the treatment quality.

[Extra-abdominal desmoid tumors. Therapeutic indications. Apropos of 28 cases].

Between 1965 and 1989, 46 desmoid tumors were observed in the hospitals of Lyon. Twenty-eight patients with an extra-abdominal tumor, with a follow-up of at least 6 months were observed. In this group, there were 12 males and 16 females with an average of 26.

["Small cell" carcinoma of the lung. Results obtained using combination chemotherapy (adriamycin, vincristine, cyclophosphamide) in 38 patients (author's transl)].

A cyclic and sequential combination of adriamycin, vincristine (or VM 26) and cyclophosphamide was used, with a follow up of 4 to 33 months in 38 patients with a "micro-cellular" carcinoma of the lung. Radiotherapy was used in association in a variable manner. Chemotherapy alone resulted in marked regression of the lesions (regression is greater than 50%) in approximately 65 per cent of cases and a level of complete regression which varied from 31 to 45 per cent according to the degree of diffusion of the lesions at the time of admission.

[Association of a bifocal nephroblastoma with Beckwith's syndrome].

A nephroblastoma occurred in the evolution of a case of Beckwith's syndrome. This rare association is not fortuitous. The bifocal character of the tumor is noted for the first time in the Beckwith's syndrome; however, it has already been observed in other conditions, which are known to promote the development of nephroblastomas.

The valve of chemotherapy in the treatment of testicular dysembryoplastic tumors.

Chemotherapy appears to be of help in treating dysembryoplastic testicular tumors. It seems better to treat first by surgery (lymphadenectomy) if possible, then (a) if no nodes are involved or only one has been discovered by microscope examination, with chemotherapy for one year; or (b) if two or more nodes are involved, with irradiation of the nodes and chemotherapy. Even if lymphadenectomy is not possible, one course of chemotherapy followed by cobalt and more chemotherapy can bring results in some cases.

[Nephroepithelioma of children manifested by isolated recurrent hematuria. Diagnostic problems apropos of 3 cases].

In children, nephroepithelioma represent less than 10% of the malignant tumors of the kidney. Reporting 3 cases, the authors emphasize that the clinical expression of nephroepithelioma, often made only of recurrent hematuria occuring over years, may mislead adequate diagnostic approach. Thus, a kidney arteriogram should be included in the investigations of nephroepithelioma.