Abstract
BackgroundExtramedullary plasmacytoma is a very rare tumor derived from plasma cells and found outside the bone marrow. Most have been identified in patients with the more aggressive anaplastic form of the disease. Only a few cases of primary pancreatic plasmacytoma have been reported.Case presentationWe present a case of a 56-year-old man in whom a pancreatic mass was found incidentally. The lesion was determined to be a pancreatic plasmacytoma after distal pancreatectomy. There are no indications of clinical, laboratory or imaging findings of multiple myeloma nor any association with plasmacytoma in any other places, so the diagnosis of primary pancreatic plasmacytoma was made.ConclusionPrimary pancreatic plasmacytoma is rare and the diagnosis is difficult before surgery.
Highlights
Extramedullary plasmacytoma is a very rare tumor derived from plasma cells and found outside the bone marrow
Extramedullary plasmacytoma is a kind of rare neoplasm, occurring in less than 5% of plasma cell tumors, and is usually diagnosed after multiple myeloma of the bone marrow [1]
10% of extramedullay plasmacytomas occur in the gastrointestinal tract, where they are detected most often in the liver, spleen, or stomach [2, 3]
Summary
Extramedullary plasamacytomas are plasma cell tumours that present outside the bone marrow. Most commonly, they have been found in the upper respiratory tract but the primary pancreatic plasmacytoma is rare. We report a case of primary pancreatic plasmacytoma that was found incidentally. Case presentation A 56-year-old man complained of chest and back pain and discomfort after activity for over 20 days with no other symptoms or observed signs. Routine blood test suggested infection (WBC 10.12 × 109/L, NEU 9.41 × 109/L, NEU ratio93%) and identified anemia (RBC 3.26 × 1012/L, haemoglobin 98 g/L). Serum bilirubin level and lactate dehydrogenase were elevated. A routine abdominal utrasonogram was obtained and it detected a hypoechoic mass in the pancreas near the celiac trunk. MRI (Fig. 1a-g) confirmed a 5.1 × 3.8 cm
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