Primary pancreatic anaplastic large cell lymphoma, ALK negative: A case report

Figure 1 A: Abdominal CT scan showing the head of the pancreas and the uncinate process blurred. B: The mass in the pancreatic head and especially the uncinate process in MRI scan.

Figure 2 Endoscopic view of the ulcerated mass-like deformity of the duodenal bulb with a friable surface.

Figure 3 A: Duodenal mucosa infiltrated by polymorphous neoplastic lymphoid cells with eosinophilic cytoplasm and large nuclei. Small numbers of acute inflammatory cells are also present (hematoxylin-eosin ×400). B: Connective tissue and vascular lumens with neoplastic emboli with similar morphologic features as in the duodenal biopsy (hematoxylin-eosin ×200).

Figure 4 Strong CD30 immunohistochemical expression of lymphoma cells in the duodenal mucosa (×400).