Krestin G P, Beyer D, Steinbrich W
Gastrointest Radiol. 1986;11(4):364-9. doi: 10.1007/BF02035112.
The value of computed tomography (CT) in the differentiation of an enlarged retrorectal space was analyzed in 132 cases. Classification of barium enema findings into those with simultaneous mucosal alterations and those without any visible lesions of the rectal mucosa seems to be useful. Computed tomography helps in those cases without mucosal changes to differentiate between retrorectal fibrosis, tumorous masses, and inflammatory diseases of the colon. It also demonstrates the lack of pathologic lesions in equivocal cases of pelvic lipomatosis and so-called "normal variants." If simultaneous mucosal involvement on barium enema--especially in rectal carcinoma or recurrent carcinoma of the rectum--is found, CT may show the perirectal extension of tumorous masses and thus help to clarify local operability.
对132例患者分析了计算机断层扫描（CT）在鉴别直肠后间隙增宽中的价值。将钡剂灌肠检查结果分为同时伴有黏膜改变的情况和直肠黏膜无可见病变的情况似乎是有用的。对于那些没有黏膜改变的病例，CT有助于鉴别直肠后纤维化、肿瘤性肿块和结肠炎性疾病。它还能显示盆腔脂肪增多症和所谓“正常变异”等疑难病例中不存在病理性病变。如果在钡剂灌肠检查中发现同时存在黏膜受累情况，尤其是在直肠癌或直肠癌复发时，CT可能显示肿瘤性肿块的直肠周围浸润，从而有助于明确局部可切除性。
