Weinstein M, Roberts M
Ann Surg. 1977 Mar;185(3):295-300. doi: 10.1097/00000658-197703000-00008.
Of 157 patients operated upon for cancer of the rectum within the last 10 years, 44 were available for a followup study of sexual potency. After the anterior resection operation, sexual function for both men and women remained practically unchanged. Following the abdominoperineal operation, where the entire rectum was extirpated, the results differed for men and women. Sexual function in men was completely destroyed, but women were capable of continuing sexual enjoyment as before the operation. Anterior resection in both sexes, i.e., leaving 6 cm of the distal rectum, does not destroy nerve fibers or other structures vital to continuing normal sex activity. However, the abdominoperineal operation in men destroys the important parasympathetic fibers to the male genital system and renders the patient impotent. In women, the abdominoperineal operation for cancer spares most of the nerve supply, especially the important pudendal nerve, thus permitting the patient to continue sexual activity as before surgery.
在过去10年中接受直肠癌手术的157例患者中，有44例可进行性功能随访研究。前切除术之后，男性和女性的性功能基本保持不变。在腹会阴联合手术（即整个直肠被切除）之后，男性和女性的结果有所不同。男性的性功能完全丧失，但女性仍能够像手术前一样继续享受性生活。男女进行前切除术（即保留6cm远端直肠）均不会破坏对维持正常性活动至关重要的神经纤维或其他结构。然而，男性进行腹会阴联合手术会破坏通往男性生殖系统的重要副交感神经纤维，导致患者阳痿。对于女性，癌症的腹会阴联合手术保留了大部分神经供应，尤其是重要的阴部神经，从而使患者能够像手术前一样继续进行性活动。
