Leiomyosarcomas of colon are rare tumors accounting for less than 1% of cases which are often misdiagnosed and confused with gastrointestinal stromal tumor (GIST). We report a case of 54-year-old male presenting with abdominal pain with computer tomography (CT) showing a retroperitoneal mass. He underwent laparotomy and surgical excision of mass was done. On pathological examination, microscopy was suggestive of GIST, but immunohistochemistry was positive for desmin and ultimately this case was diagnosed as leiomyosarcoma.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.