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Case report
Year : 2022 Month : January-March Volume : 11 Issue : 1 Page : PC04 - PC05

Waldenstrom Macroglobulinaemia with Signet Ring Cells: A Case Report

 
Correspondence Address :
Thulasi Raman Ramalingam,
New No. 77, Old No: 37, New Street, Mannady, Chennai-600001, Tamil Nadu, India.
E-mail: drthulas31@gmail.com
Waldenstrom Macroglobulinemia (WM) is an indolent lymphoproliferative disorder characterised by Immunoglobulin M (IgM) production and neoplastic lymphoid infiltrate. The morphology of the neoplastic cells show spectrum of maturation characterised by small lymphocytes, lymphoplasmacytoid cells and plasma cells. The infiltrate is predominantly lymphoid with relatively small population of plasma cells. The plasma cell morphology is commonly of mature type with basophilic cytoplasm, eccentric nucleus with clumped chromatin and perinuclear halo (hof). But incidence of signet ring cells in WM is very rare and only one case has been reported till date. Here, authors report an interesting case of a 61-year-old man who presented with on and off chest pain and later diagnosed as WM with signet ring cells. On examination, the patient was found to have anaemia and lymphadenopathy. Bone marrow aspirate cytology showed hypercellular particles and scattered signet ring like plasma cells with large globular cytoplasmic inclusions. Flow Cytometry (FCM) established the diagnosis by demonstrating the clonal nature of plasma cells and B-lymphoid cells. Immunofixation confirmed the presence of monoclonal protein of IgM lambda type. The cytoplasmic content in these signet ring plasma cells is probably the accumulated IgM due to the defect in releasing. Clustering of these signet ring cells in marrow may raise a suspicion of metastatic adenocarcinoma and should not be misinterpreted.
 
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