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- Title
Colon Metastasis From Microscopic Serous Carcinoma of the Fallopian Tube Fimbria Mimicking a Primary Colon Cancer.
- Authors
Genki Usui; Yoshio Masuda; Hirotsugu Hashimoto; Masashi Kusakabe; Kentaro Nakajima; Hajime Tsunoda; Nobuyuki Matsuhashi; Yasushi Harihara; Hajime Horiuchi; Teppei Morikawa
- Abstract
Metastatic diseases rarely develop in the colorectum, and diagnosing colorectal metastasis by biopsy without history of a malignant tumor or clinical information of a primary tumor is challenging. A 65-year-old woman with a 6-month history of constipation and diarrhea was admitted to our hospital and diagnosed with rectosigmoid colonic micropapillary carcinoma. Low anterior resection was performed after neoadjuvant chemotherapy. Because the lipoleiomyoma in the uterus obstructed the operator's vision, total hysterectomy and bilateral salpingo-oophorectomy were performed. Examination of the colon and adnexa, together with immunohistochemical studies, revealed that the colonic tumor was actually serous carcinoma that had metastasized from the left fimbria of the fallopian tube. Retrospective immunohistochemical examination of the colon biopsy specimen suggested carcinoma with a Müllerian immunophenotype. When a colon biopsy reveals carcinoma with an invasive micropapillary pattern without a component of conventional tubular adenocarcinoma, immunohistochemical examination should be performed to rule out the possibility of metastasis.
- Subjects
COLON cancer diagnosis; FALLOPIAN tubes; METASTASIS; MIMICRY (Biology); PILI (Microbiology); CANCER chemotherapy
- Publication
International Journal of Surgical Pathology, 2019, Vol 27, Issue 4, p390
- ISSN
1066-8969
- Publication type
Article
- DOI
10.1177/1066896918824028