Mesenteric Leiomyosarcoma Mistaken as Subserosal Fibroid: A Rare Case Report.

Mesenteric leiomyosarcoma is a rare entity. It is usually seen in middle-aged individuals. The tumor usually remains asymptomatic for longer duration until it acquires a big size. Surgical removal is the main modality of treatment. Common symptoms of the patients are usually pain or distension abdomen. Pre-operative diagnosis is usually difficult. Ultrasonography and computed tomography scan can help in the diagnosis. In this case, the tumor was mistaken for subserosal fibroid but intraoperatively turned out a mesenteric mass with retroperitoneal extension. On histopathological examination, it was a leiomyosarcoma. Reoccurrence can occur. Early diagnosis and wide surgical resection can improve the prognosis of the patient.