Aqsa Anum, Droubi Sami, Amarnath Shivantha, Haddad Fady, Deeb Liliane
Department of Internal Medicine, Staten Island University Hospital, New York, New York, USA.
Department of Gastroenterology, Staten Island University Hospital, New York, New York, USA.
Case Rep Gastroenterol. 2021 Jan 21;15(1):41-46. doi: 10.1159/000510934. eCollection 2021 Jan-Apr.
Metastasis to the colon from another primary internal malignancy is an untypical and a seldom reported entity. Direct visualization during colonoscopy is considered the gold standard of diagnosis. Pathologic diagnosis with immunohistochemical staining is essential to differentiate primary colorectal malignancy from secondary metastasis to the colon. We, hereby, present a case of a 53-year-old female status-post resection of left-sided papillary serous ovarian neoplasm who presented 2 years later with a single rectosigmoid intraluminal ulcerative mass imitating a primary colon cancer. Biopsies of the mass were consistent with metastasis from her primary ovarian carcinoma. We believe this case is unique because of the rarity of ovarian cancer metastasizing to the colon intraluminally rather than through direct locoregional invasion. Furthermore, it highlights the importance of considering secondary metastasis in patients with previous history of another primary internal malignancy.
来自另一种原发性内部恶性肿瘤的结肠转移是一种不典型且鲜有报道的情况。结肠镜检查时的直接可视化被认为是诊断的金标准。通过免疫组织化学染色进行病理诊断对于区分原发性结直肠癌与结肠继发性转移至关重要。在此，我们报告一例53岁女性，她曾接受左侧乳头状浆液性卵巢肿瘤切除术，两年后出现一个模仿原发性结肠癌的单一乙状结肠直肠腔内溃疡性肿块。肿块活检结果与她原发性卵巢癌的转移相符。我们认为这个病例很独特，因为卵巢癌腔内转移至结肠而非通过直接局部区域侵犯的情况很罕见。此外，它凸显了对于有另一种原发性内部恶性肿瘤病史的患者考虑继发性转移的重要性。
