[A case of retroperitoneal malignant fibrous histiocytoma with marked response to concurrent cisplatin and radiation therapy: a case report].

A 42-year-old male was referred to our hospital with a complaint of right lumbar pain in September 1999. Abdominal computed tomography and magnetic resonance imaging revealed a large retroperitoneal tumor adjacent to the aorta and the renal vessels. We judged that it was inoperable.

[A case of inflammatory myofibroblastic tumor of the bladder].

Here we report a rare case of inflammatory myofibroblastic tumor of the bladder. The patient was a 72-year-old man. We diagnosed this case preoperatively as urachal tumor from urine cytology, cystoscopy, and magnetic resonance imaging.

[Synchronous ipsilateral renal cell carcinoma and transitional cell carcinoma: report of 2 cases].

Two cases of synchronous ipsilateral renal cell carcinoma and renal pelvic transitional cell carcinoma are presented, one in a 70-year-old man and another in a 54-year-old man. These two cases were diagnosed preoperatively as synchronous ipsilateral renal tumor and pelvic tumor from urine cytology, retrograde pyelography, computed tomography and magnetic resonance imaging, and in both two cases, nephroureterectomy was performed. Pathological diagnosis was renal cell carcinoma and renal pelvic transitional cell carcinoma, which existed incidentally in the same kidney.