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Fibrin-associated diffuse large B-cell lymphoma with plasmacytic differentiation: case report and literature review
Esther Moreno Moreno1, Ana Ferrer-Gómez1, Héctor Pian Arias1
1Department of Pathology, Hospital Universitario Ramón y Cajal, Ctra. de Colmenar Viejo km 9,100, Madrid, 28034, Spain.
Background:
Primary cardiac lymphomas are extremely rare entities (< 2% of cardiac tumours) and the most frequent histologic type is diffuse large B-cell lymphoma (DLBCL). Fibrin-associated DLBCL (FA-DLBCL) is a very unusual form of DLBCL associated with chronic inflammation, and only case reports and small series have been described. In the heart, it usually occurs in the context of a cardiac myxoma or cardiac prostheses and it is not bulk forming. These lymphomas frequently present with non-germinal center phenotype and are associated with Epstein-Barr virus (EBV) type III latency.
Case Presentation:
We describe a case of FA-DLBCL arising in a cardiac myxoma, with plasmacytic differentiation and type I EBV latency.
Conclusions:
Although they are very rare, FA-DLBCLs should be known for their diagnostic difficulty, due to its unspecified clinical manifestations, and for their more favourable prognosis, sometimes even without additional treatment after surgical resection.
