[Spontaneous rupture of ureter caused by ureteral cancer]

A 63-year-old man was admitted with right flank pain, nausea and chill. CT scan revealed right hydronephrosis and rupture of ureter, but tumor or stone was not detected in the CT scan. However retrogradepylelography revealed right lower ureteral tumor, and this patient was treated by right nephroureterectomy and partial cystectomy. Histopathological examination of ureteral tumor showed transitional cell carcinoma. Spontaneous rupture of ureter due to ureteral cancer is a rare case, which has not been reported in the Japanese literature. Clinical study was performed about cases of spontaneous rupture of ureter which have been previously reported.