Considerations on the Diagnosis and Prognosis of Primary Cardiac Lymphoma

Dear Editor,

We would like to congratulate the authors on their relevant case report, “Cardiac Lymphoma: A Case Report,” published in the Arquivos Brasileiros de Cardiologia (ABC Cardiol). The article addresses a rare and challenging clinical condition, primary cardiac lymphoma (PCL), which, as highlighted in the article, is an aggressive tumor with a poor prognosis and nonspecific symptoms, making early diagnosis difficult. Among the article’s strengths, we highlight the rarity of the case, as it is a diffuse large B-cell lymphoma (DLBCL) with primary cardiac involvement, given the low incidence of these tumors (approximately 0.04% of primary malignant cardiac tumors, with lymphomas representing about 1.3% of these), with DLBCL being the most common subtype, frequently located in the right chambers of the heart.^,

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