An 8-year-old boy presented with dysuria and acute retention of urine.
Rectal examination showed a hard mass arising from the prostate. CT s
can of the pelvis confirmed the presence of a large prostatic tumor ca
using bladder outflow obstruction. A provisional diagnosis of pelvic s
arcoma was initially made. Biopsy of the tumor mass however, revealed
non-Hodgkin's lymphoma of T-cell type. The tumor showed very good resp
onse to chemotherapy and the urinary obstruction significantly improve
d with a week after starting therapy. (C) 1995 Wiley-Liss, Inc.