Journal
CUREUS JOURNAL OF MEDICAL SCIENCE
Volume 11, Issue 10, Pages -Publisher
SPRINGERNATURE
DOI: 10.7759/cureus.5969
Keywords
multiple myeloma; evans syndrome; immune thrombocytopenia; chemotherapy
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Autoimmune events are rare in multiple myeloma (MM). Herein, we report a rare case of a patient presenting with recurrent gastrointestinal (GI) bleeding of unknown origin, also having pancytopenia eventually diagnosed as MM with Evans syndrome. This is an uncommon disorder presenting as autoimmune hemolytic anemia (AIHA) with immune thrombocytopenia purpura (ITP). A 56-year-old African American male presenting with recurrent GI bleeds and pancytopenia of unknown origin developed acute colonic diverticulitis on recurrent admissions, and sigmoid colectomy with primary anastomosis was performed. Flow cytometry with serum protein electrophoresis eventually revealed IgG MM with elevated Kappa/Lambda ratio. Bone marrow biopsy revealed 80% to 90% Kappa clonal plasma cells confirming MM. Direct antiglobulin test (DAT) was positive with pancytopenia. The patient initially showed a good response to chemotherapy with thrombocytopenia improving with intravenous (I/V) dexamethasone. DAT done after completion of initial chemotherapy was negative. However, his disease relapsed after three months with pancytopenia and DAT becoming positive again. The patient was restarted on chemotherapy for debulking, which resulted in a negative DAT again after two months, but pancytopenia did not improve. The patient eventually passed away due to subarachnoid hemorrhage. We highlight only this fourth reported case because of its unique presentation. In elderly patients with unknown cause of GI bleeding with pancytopenia, blood dyscrasias, especially MM, should be considered. Autoimmune workup if positive might warrant the use of steroids for pancytopenia, which can improve thrombocytopenia in MM with Evans syndrome but not anemia.
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