A Case of a Rectus Abdominis Metastasis from a Small Intestinal Adenocarcinoma

• Published in: Nippon Shokaki Geka Gakkai zasshi Vol. 46; no. 10; pp. 769 - 776
• Main Author: Nagao, Mitsuo
• Format: Journal Article
• Language: English; Japanese
• Published: The Japanese Society of Gastroenterological Surgery 2013
• Subjects: FDG-PET; skeletal muscle metastasis; small intestinal cancer
• ISSN: 0386-9768; 1348-9372
• DOI: 10.5833/jjgs.2013.0015

This was a case of metastasis to the rectus abdominis from the small intestinal adenocarcinoma after surgical resection. A 70-year-old woman underwent a segmental jejunal resection for the small intestinal cancer in December 2009 and moderately differentiated adenocarcinoma confirmed histopathologically. A 3-cm length lump was noted in the patient’s right lower abdomen in May 2011 and FDG-PET revealed a solitary abdominal wall tumor. The tumor was diagnosed as an abdominal muscular metastasis from the small intestinal cancer and resected with the surrounding soft tissue. Histopathologic examination confirmed moderately differentiated adenocarcinoma invading the striated muscle. Recurrent small intestinal cancer of the abdominal wall muscle was definitively diagnosed. She remained recurrence-free after 18 months of follow-up. This is an extremely rare case with recurrent small intestinal cancer in the abdominal wall muscle without metastasis to any other site.