[A case of paratesticular rhabdomyosarcoma].

A case of paratesticular rhabdomyosarcoma in an 18-year-old male is reported. The patient was admitted for swelling of the right scrotum and right inguinal pain. Malignant tumor of the right testis was suspected and a high inguinal orchiectomy was performed.

[Study of blood flow in hyperthermia using human renal cell carcinoma heterotransplanted in nude mice--differences in histological tumour pattern upon the effects of hyperthermia].

Utilizing two types of human renal cell carcinoma heterotransplanted in nude mice (JRC 1; papillary, avascular pattern, grade III, JRC 11; anaplastic and alveolar, hypervascular pattern, grade IV), we investigated the influence of tumor blood flow upon the effects of local hyperthermia (42.5 degrees C), induced by 915 MHz microwave. Blood flow was determined from the rate of thermal clearance by use of the bio-heat transfer equation.

[Partial nephrectomy for renal tumors].

We performed partial nephrectomy in 5 patients with renal tumors. In 1 patient with synchronous bilateral renal cell carcinoma, radical nephrectomy was conducted simultaneously for the contralateral kidney. The second patient had a transitional cell carcinoma of the renal pelvis of the contralateral side, for which the pelvis was resected simultaneously.

[A partial nephrectomy in renal cell carcinoma].

Two patients with a renal cell carcinoma under went a partial nephrectomy. In both these cases the renal cell carcinoma had been detected incidentally and the lesion was a localized small tumor. Therefore, a partial nephrectomy was performed similarly, the tumor size was 1.

[Clinical study of undifferentiated renal cell carcinoma in comparison with well differentiated cases].

Unlabelled: During the past 28 years, 397 patients with renal cell carcinoma were treated at The Jikei University Hospital and its related institutions. Of these, 44 cases with undifferentiated renal cell carcinoma (grade IV) were compared with well differentiated cases (grade I), with regard to following 5 clinicopathological items: 1) general clinical features such as distribution of patient ages, sex ratio, affected side, the relationship of age and the volume of nephrectomized kidney, 2) angiographic appearance, 3) distribution of stages, 4) distribution of metastatic organs, 5) survival rates of each grade and each stage.

The Results: 1) There was no specific trend in the distribution of affected ages, sex ratio and affected side of the tumour, but the volume of nephrectomized kidney in grade IV cases was much larger than that of the kidneys in grade 1 cases.