Primary duodenal T/histiocyte-rich large B-cell lymphoma complicated with obstructive jaundice: A case report and review of literature

Figure 1 Abdominal computed tomography scan. A: Heterogeneous thickening of the descending duodenum with a 7.6 cm × 7.4 cm × 7.4 cm low-density mass, luminal narrowing, and dilation of the intrahepatic and extrahepatic bile ducts; B: Gallbladder enlargement and main pancreatic duct dilatation.

Figure 2 Histopathological and immunohistochemistry examination. A: Large atypical lymphoid cells were scattered among numerous small reactive lymphocytes and, less often, histiocytes (hematoxylin-eosin, × 40); B: CD20-positive large, atypical B cells (× 40); C: Numerous CD3-positive small T cells in the background (× 40); D: CD163-positive histiocytes in the background (× 40); E: Ki-67 expression in neoplastic cells (× 40).