Metastatic colon cancer derived from a diverticulum incidentally found at herniorrhaphy: a case report

Autor: Jiro Kimura, Alan Kawarai Lefor, Shota Fukai, Kentaro Yoshikawa, Shingo Sasamatsu, Takashi Sakamoto, Ken Mizokami, Masaki Kanzaki, Tadao Kubota, Akira Saito, Hiroshi Izumi, Kunpei Honjo, Kunihiko Nagakari, Masaki Fukunaga
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Surgical Case Reports, Vol 4, Iss 1, Pp 1-5 (2018)
Druh dokumentu: article
ISSN: 2198-7793
DOI: 10.1186/s40792-018-0455-y
Popis: Abstract Background There are few reports of metastases from colon cancer to an inguinal hernia sac, and few reports of colon cancer originating in diverticula. We report a patient with carcinoma of the sigmoid colon arising in two diverticula, who presented with peritoneal seeding to an inguinal hernia sac, and a review of the literature. Case presentation A 55-year-old male underwent open herniorrhaphy for a left inguinal hernia. At operation, a nodule in the inguinal hernia sac was resected and histologic examination revealed adenocarcinoma, which was suspected to be a metastasis from a distant primary lesion. Postoperative evaluation included colonoscopy and positron emission tomography which showed two suspected lesions in sigmoid diverticula. Laparoscopic subtotal colectomy was performed, and pathology revealed adenocarcinoma in two sigmoid diverticula. Conclusions If a nodule is found in an inguinal hernia sac, especially in older patients, peritoneal metastases should be considered. Resection of the nodule with histopathologic evaluation is essential. Colon cancer arising in a diverticulum should be considered as a possible site of the primary lesion.
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