Imamura Takako, Shimaoka Shunji, Tashiro Koutarou, Niou Tatsuyuki, Nishimata Nobuaki, Tsukasa Kouichirou, Torimaru Hiromitsu, Matsuda Akio, Niihara Toru, Nishimata Yoshito, Hori Masahide, Nishimata Hiroto, Tanaka Sadao
Department of Gastroenterology, Nanpuh Hospital, Japan.
Nihon Shokakibyo Gakkai Zasshi. 2012 Mar;109(3):425-34.
We report two cases of prostatic cancer invading the rectum with circumferential rectal wall thickening. In both cases, reddish and uneven edematous mucosa was observed by colonoscopy and the boundary of the lesion was indistinct. No mass or ulcer formation was not observed. CT scan showed irregular prostatic swelling and circumferential rectal wall thickening adjacent to the prostate. The rectal biopsy specimen showed moderately to poorly differentiated adenocarcinoma, and it was positive on PSA immunostaining. Although rectal invasion of prostatic cancer is relatively rare, it is important to be aware that prostatic cancer can cause circumferential stenosis of the rectum.
我们报告了两例前列腺癌侵犯直肠并伴有直肠壁环形增厚的病例。在这两例病例中，结肠镜检查均可见黏膜发红且不均匀水肿，病变边界不清。未观察到肿块或溃疡形成。CT扫描显示前列腺不规则肿大以及前列腺旁直肠壁环形增厚。直肠活检标本显示为中分化至低分化腺癌，PSA免疫染色呈阳性。尽管前列腺癌侵犯直肠相对少见，但必须意识到前列腺癌可导致直肠环形狭窄。
