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A 53-year-old man presented with a right heterogeneous renal tumor detected by ultrasonography (US) on a routine health check. He had no complaint. Computed tomography (CT) revealed a 4 cm-diameter heterogeneous tumor located near a calcification of the right kidney, which was not so enhanced. Subsequent magnetic resonance imaging (MRI) and angiography could not rule out the malignancy of the tumor, so we performed total nephrectomy. Pathological diagnosis was multiple renal hemangioma. Multiple renal hemangioma is a rare disease, being the second reported case in the Japanese literature.

A 55-year-old male visited our hospital with a complaint of gross hematuria and right lower abdominal pain. Cytological findings of voided urine suggested the presence of malignant cells. Cystoscopic examination revealed bloody urine discharge from the right ureteral orifice and no abnormality in the bladder wall. The retrograde pyelogram showed no tumor masses. However, malignant cells were detected cytologically in the right ureteral catheteral urine twice. Under the preoperative diagnosis of primary urothelial tumor of the right upper urinary tract, right total nephroureterectomy was performed. A histological study revealed transitional cell carcinoma in situ in the lower portion of the ureter. We reviewed 46 cases of primary carcinoma in situ of the upper urinary tract previously reported in Japan.

A 63-year-old male visited our hospital with a complaint of painless swelling of the left scrotum. Left high orchiectomy was performed since ultrasonography suggested a testicular tumor. Histologically, this testicular mass was a Leydig cell tumor. We reviewed 47 cases of this tumor previously reported in Japan.

A case of nodular fasciitis occurring at the bladder vertex in a 34-year-old male is reported. The tumor was about 1 cm in diameter. A urachal tumor was diagnosed, and excised en bloc from the umbilicus to the bladder vertex. This tumor was diagnosed as nodular fasciitis from the histopathological findings. No recurrence has been seen for 3 years. Nodular fasciitis occurs mainly in the limbs or trunk. Occurrence in the bladder is very rare. Only 14 cases (including our case) of nodular fasciitis occurring in the bladder are known.

A primary extra-adrenal retroperitoneal ganglioneuroma was found incidentally in a 17-year-old boy during a series of examinations for hematopyuria. Computed tomography and magnetic resonance imaging revealed a homogenous mass located between the right proximal ureter and the inferior vena cava just below the right kidney. Subtotal resection of the tumor was performed through a transabdominal approach. The resected specimen measured 8.5 x 6 x 5.5 cm and weighed 70 g. Histological examination showed that the lesion was an extra-adrenal retroperitoneal ganglioneuroma composed of mature ganglion cells and nerve fibers without any malignant features. The patient has shown no signs of recurrence in the 4 months after surgery. We provide a review of the Japanese literature on extra-adrenal retroperitoneal ganglioneuroma and also discuss the clinical features of this tumor.