Mesenteric tumors: diagnosis and treatment.

Mesenteric tumors are rare and consist of a heterogeneous group of lesions. Masses may arise from any of the mesenteric components: peritoneum, lymphatic tissue, fat, and connective tissue. Cellular proliferation can also arise from infectious or inflammatory processes. They can be classified as solid or cystic, benign or malignant. Mesenteric tumors are usually discovered incidentally or during investigation of non-specific symptoms. While clinical examination and imagery may suffice to make the diagnosis, histopathology is often required by either needle percutaneous or surgical biopsy, or immediate excision. Therapeutic management options vary widely depending on the nature of the lesion; they range from simple observation or medical therapy to surgery. Benign well-delineated mesenteric masses that are symptomatic can often be treated by simple enucleation. But invasive malignant tumors require a carcinologic resection; a careful preoperative evaluation to assess the relationship between the mass and adjacent vascular and digestive structures is essential since they may dictate the need for extensive sacrifice of bowel with resultant intestinal insufficiency due to short bowel syndrome.