B-cell lymphoma of the mesentery
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Hazy nodal soft tissue mass in the root of the mesentery. Few enlarged retroperitoneal nodes.
Mesenteric lymph node fine needle aspirate is received.
Flow Cytometry Immunophenotyping Results:
Cytospin of the mesenteric lymph node FNA for flow cytometry shows a monotonous population of small lymphocytes, some with irregular nuclear borders, with interspersed larger lymphocytes with prominent nucleoli.
Population Reported: B-lymphocytes
Abnormal cells: 85 % of flow events
Mesenteric lymph node, fine needle aspirate, flow cytometry:
-CD10-positive B-cell lymphoma
This case serves as a good companion and distinction to sclerosing mesenteritis, which can also present with a soft tissue mass in the mesentery. In this case, the mass is bulky and nodal, which is much more suggestive of lymphoma. A few enlarged retroperitoneal lymph nodes also favor this diagnosis. This was biopsied using a transabdominal approach with ultrasound.