Rectal involvement by prostatic carcinoma: barium enema findings.
A retrospective study was performed to determine the radiographic features of prostatic carcinoma invading the rectum on double-contrast barium enemas. In 11 such patients, these examinations revealed localized narrowing and/or speculation of the rectum (four cases); a smooth, extrinsic mass impression on the rectosigmoid colon (two cases); an umbilicated submucosal mass in the rectosigmoid colon (one case); and rectosigmoid narrowing with spiculated, pleated mucosal folds in the narrowed segment of bowel (four cases). Thus, most patients (64%) had localized involvement of the rectosigmoid colon with sparing of the distal rectum. The anatomic-pathologic basis for the localized spread of prostatic carcinoma to the rectosigmoid colon is illustrated on MR scans. Thus, prostatic carcinoma invading the rectum may be manifested on double-contrast barium enema by a spectrum of radiographic findings, and most patients have localized rectosigmoid involvement with sparing of the distal rectum.
Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104.
S E
SE
Rubesin
M S
MS
Levine
M
M
Bezzi
H M
HM
Pollack
I
I
Laufer
H
H
Herlinger
G
G
Harris
D000230:Adenocarcinoma / Q000000981:diagnostic imaging* / Q000473:pathology; D000368:Aged; D000369:Aged, 80 and over; D001466:Barium Sulfate / Q000008:administration & dosage; D004733:Enema; D006801:Humans; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D011471:Prostatic Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D011859:Radiography; D012007:Rectum / Q000000981:diagnostic imaging* / Q000473:pathology
D001466:Barium Sulfate