Botryoid Wilms' tumor of the renal pelvis extending into the bladder.
We report a case of botryoid Wilms' tumor that occupied the renal pelvis and extended into the bladder. A 3-year-old boy was referred to us with a chief complaint of gross hematuria and micturition pain. Computed tomography showed tumor occupying the right renal pelvis and ureter and extending into the bladder. Right radical nephroureterectomy was performed. The resected specimen showed a botryoid sarcoma-like appearance, occupied the right renal pelvis and ureter, and protruded into the bladder. Histologic findings showed typical triphasic Wilms' tumor. Botryoid Wilms' tumor has been reported in only 16 cases in the literature and in only 3 cases extended into the bladder.
Nagahara
Akira
A
Department of Urology, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan. akira400@mch.pref.osaka.jp
Kawagoe
Mari
M
Matsumoto
Fumi
F
Tohda
Akira
A
Shimada
Kenji
K
Yasui
Masahiro
M
Inoue
Masami
M
Kawa
Keisei
K
Hamana
Keiko
K
Nakayama
Mashiro
M
D002675:Child, Preschool; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology* / Q000601:surgery; D007682:Kidney Pelvis; D008297:Male; D009361:Neoplasm Invasiveness; D001749:Urinary Bladder Neoplasms / Q000473:pathology* / Q000601:surgery; D009396:Wilms Tumor / Q000473:pathology* / Q000601:surgery