[Renal metastasis from prostatic adenocarcinoma : a case report].

We report a case of renal metastases from prostate cancer to show that the possibility of tumor metastasis, although rare, should be considered in the differential diagnosis of renal mass. A 67-year-old man was found to have a renal mass on computed tomographic scan incidentally. He had had total androgen blockage (bicalutamide + leuprolerin) and chemotherapy (docetaxel hydrate ) for treatment of prostate cancer discovered 33 months ago. On the basis of the clinical features and radiologic results, the patient was thought to have a second malignant tumor, and we performed left nephrectomy. The pathological finding of this case was renal metastasis from prostatic adenocarcinoma. He died 18 months postnephrectomy.

[Two cases of granulocyte-colony stimulating factor-producing infiltrating urothelial carcinoma of the kidney].

We report two cases of granulocyte-colony stimulating factor (G-CSF) producing infiltrating urothelial carcinoma of the kidney. Case 1: A 58-year-old woman was referred to our hospital for fever and right back pain. Blood test showed severe inflammation and computed tomographic (CT) scan demonstrated swelling and irregular enhancement of the right kidney. Under the diagnosis of pyonephrosis or renal tumor, we performed right radical nephrectomy. The patient died of lung and liver metastases 6 months postoperatively despite of adjuvant chemotherapy. Case 2: A 76-year-old woman was referred to our hospital for a chief complaint of gross hematuria. Retrograde pyelogram and CT scan demonstrated a right renal pelvic tumor and we performed right nephroureterectomy. The patient died of liver and lung metastases 4 months postoperatively. The pathological and histochemical findings of these two cases were G-CSF producing infiltrating transitional cell carcinoma of the kidney. They showed marked leukocytosis and elevation of serum G-CSF levels. To our knowledge, they are the first two cases of G-CSF producing infiltrating urothelial carcinoma of the kidney in Japanese literature.

[Clinical study of unilateral intravaginal testicular torsion and anatomicalcomparative study of bilateral testes in orchiopexy].

Fourty-eight patients were operated on for unilateral intravaginal testicular torsion at Yokohama Red Cross Hospital during the period between July 1976 and December 2001. Orchiopexy was carried out on 20 out of 48 patients. Only 8 patients could receive orchiopexy within 8 hours after the onset of symptoms. Although, 24 of the 48 patients had visited a medical doctor within 8 hours after the onset. Therefore, the less the testes might be sacrificed if these patients could be immediately sent to a clinic with an urologic speciality. The contralateral uninvolved testis has been said to require orchiopexy because it has an anatomical structure similar to the testis with torsion. However, the contralateral testes in 5 out of 20 patients with ipsilateral orchiopexy turned out to have a normal anatomical structure according to our classification of intravaginal testicular torsion. This suggests that no orchiopexy is necessary if the contralateral uninvolved testis has a normal anatomical structure from the standpoint of torsion type.