Rubesin S E, Levine M S, Bezzi M, Pollack H M, Laufer I, Herlinger H, Harris G
Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104.
AJR Am J Roentgenol. 1989 Jan;152(1):53-7. doi: 10.2214/ajr.152.1.53.
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.
进行了一项回顾性研究，以确定双对比钡灌肠检查中前列腺癌侵犯直肠的影像学特征。在11例此类患者中，这些检查发现直肠局部狭窄和/或充盈缺损（4例）；乙状结肠直肠交界处有光滑的外压性肿块（2例）；乙状结肠直肠交界处有脐状黏膜下肿块（1例）；以及乙状结肠直肠交界处狭窄，狭窄肠段内黏膜皱襞呈毛刺状、打褶（4例）。因此，大多数患者（64%）乙状结肠直肠交界处有局限性受累，而直肠远端未受累。前列腺癌向乙状结肠直肠交界处局部扩散的解剖病理学基础在磁共振扫描中得以显示。因此，前列腺癌侵犯直肠在双对比钡灌肠检查中可能表现为一系列影像学表现，且大多数患者乙状结肠直肠交界处有局限性受累，而直肠远端未受累。
