IgG4-related Disease with a Cardiac Mass.

IgG4-related Disease with a Cardiac Mass.:

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IgG4-related Disease with a Cardiac Mass.

Intern Med. 2020 Jan 17;:

Authors: Matsumura I, Mitsui T, Tahara K, Shimizu H, Yanagisawa K, Ishizaki T, Koiso H, Takizawa M, Yokohama A, Saitoh T, Hirato J, Murakami H, Handa H, Tsukamoto N

Abstract

A 69-year-old man with palpitations and decreased blood pressure was referred. Echocardiography showed a mass in the right atrium and cardiac septum. The serum IgG4 level was 1450 mg/dl. A biopsy of the cardiac mass showed fibrosis with inflammatory cells and increased IgG4-positive plasma cells and lymphocytes. Flow cytometry and polymerase chain reaction of the immunoglobulin heavy chain did not demonstrate monoclonality. He was diagnosed with IgG4-related disease (IgG4-RD). IgG4-RD with a cardiac mass is rare and it is difficult to distinguish it from malignant lymphoma by a pathological examination alone. We therefore performed a biopsy and analyzed the clonality in order to make an accurate diagnosis of IgG4-RD.

PMID: 31956206 [PubMed - as supplied by publisher]