Mesenteric tumors are rare, especially in the pediatric population. We present a case of a 7-month-old boy with an incidental abdominal mass identified as a Primitive Myxoid Mesenchymal Tumor of Infancy derived from the small bowel mesentery. This neoplasm is part of a spectrum of myofibroblastic lesions, with distinct clinical, morphologic, IHQ reactivity, and an aggressive clinical course. There is a paucity of evidence for the management of these tumors, and surgical resection remains the mainstay of treatment.
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