UNASSIGNED: We present the rare case of a 40-year-old male patient with anisakiasis coexisting with mucosal gastric cancer. Submucosal gastric cancer was suspected on gastric endoscopy and endoscopic ultrasonography. After laparoscopic distal gastrectomy, granulomatous inflammation with Anisakis larvae in the submucosa was pathologically revealed beneath mucosal tubular adenocarcinoma. Histological and immunohistochemical investigation showed cancer cells as intestinal absorptive-type cells that did not produce mucin.
UNASSIGNED: Anisakis larvae could have invaded the cancer cells selectively because of the lack of mucin in the cancerous epithelium. Anisakiasis coexisting with cancer is considered reasonable rather than coincidental. In cancer with anisakiasis, preoperative diagnosis may be difficult because anisakiasis leads to morphological changes in the cancer.
■我们介绍了一例罕见的40岁男性患者与粘膜胃癌并存。胃镜和内镜超声检查怀疑粘膜下胃癌。腹腔镜远端胃切除术后,在粘膜管状腺癌下方,病理上发现了粘膜下层带有Anisakis幼虫的肉芽肿性炎症。组织学和免疫组织化学研究显示癌细胞为不产生粘蛋白的肠吸收型细胞。
■异语幼虫可能由于癌上皮中缺乏粘蛋白而选择性地侵入了癌细胞。异株病与癌症共存被认为是合理的,而不是巧合。在患有茴香病的癌症中,术前诊断可能很困难,因为茴香病导致癌症的形态学变化。