[A Case of Mucinous Adenocarcinoma of the Descending Colon with Extramural Progression].

A 63-year-old man was admitted to our hospital with a cough. Based on imaging studies, the patient was diagnosed with locally advanced descending colon cancer with extensive infiltration into peripheral organs by extramural progression. There was no distant metastasis. Therefore, he received left hemicolectomy with splenectomy, partial gastrectomy, and partial diaphragm resection. Histopathological examination showed a mucinous adenocarcinoma, pT4b, pN1, cM0, fStage III A. We report a rare case of extramural progression colon cancer with invasion of various organs and review 12 previous case reports.