Colonic adenocarcinoma and gastric gastrointestinal stromal tumor: A rare association

Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the digestive tract. Metachronous or synchronous occurrence of GISTs and epithelial tumors of the digestive tract is rare and usually discovered incidentally during gastrointestinal surgery for carcinomas. GIST accompanied by other neoplasms have usually very low risk of aggressive behavior compared with a GISTalone. We present here a case of a 66-year-old patient with recurrent sigmoid adenocarcinoma and metachronous gastrointestinal stromal tumor discovered incidentally during surgical treatment of the recurrent adenocarcinoma. © Springer-Verlag 2010.