[Metastatic ureteral tumor from colon cancer: a case report].

A 53-year-old man was referred for further examination of left hydronephrosis. He had undergone high anterior resection for sigmoid colon cancer about 2 years previously. Retrograde pyelography demonstrated a filling defect in the middle portion of the left ureter. Brushing cytology of the lesion was class IV. Left nephroureterectomy was performed. Histology indicated metastatic adenocarcinoma from colon cancer.

Pelvic congenital arteriovenous malformation diagnosed by transrectal ultrasonography: A case report.

Arteriovenous malformations (AVMs) of the pelvis are relatively rare and difficult to treat because of multiple and extensive feeding vessels. We report the case of a 69-year-old male with pelvic congenital AVM that was detected during tests for dysuria. He visited our hospital complaining of voiding difficulty. Digital rectal examination revealed a pulsating mass that was palpable on the right side of the prostate. Transrectal ultrasonography showed multiple hypoechoic lesions adjacent to the prostate and colour Doppler ultrasonography revealed the flow regions corresponded to the hypoechoic lesions. Computed tomography demonstrated large-to-small tubular vessels adjacent to the prostate, while pelvic angiography showed many small feeder arteries extending mainly from the right internal iliac artery. He was diagnosed as having pelvic congenital AVM. Uroflowmetry revealed slight voiding difficulty without residual urine. The patient decided against treatment and requested we monitor his clinical course.

[Local recurrence of micropapillary bladder tumor after radical cystectomy : successful treatment with radiation therapy : a case report].

A 75-year-old man consulted a physician because of gross hematuria and right flank pain. Since a bladder tumor and right hydronephrosis were found, the patient was referred to our hospital. The clinical diagnosis was cT3bN0M0 and radical cystectomy was done. The pathological diagnosis was micropapillary variant of urothelial carcinoma, pT3bN0M0. The local recurrence appeared in the interior of the pelvis by computed tomography after the operation. A complete response was obtained by radiotherapy.

Metanephric adenoma treated with laparoscopic nephrectomy.

A 31-year-old-female presented with a left renal mass detected incidentally during an abdominal ultrasound examination. Computed tomography and angiography revealed a hypovascular solid tumor 4.5 cm in diameter at the middle portion of the left kidney. Laparoscopic left nephrectomy was performed and macroscopic examination of the specimen revealed encapsulated tumor with grayish yellow cut surface. Histological examination demonstrated that the tumor cells were small scant cytoplasms, containing round and regular nuclei, forming a glomerular-like structure. There was no mitosis nor cellular atypia indicating a malignant structure. The histological diagnosis was metanephric adenoma.