Cell-Free DNA Reveals Hidden Streptococcus anginosus in Cryptogenic Purulent Pericarditis in a Young Adult

Rafael Lessa Da Costa; Natalia Viana Lopes Pereira; Ricardo Mendes Carneiro; Flavia Prado Fialho Santos; Julia Paulo Mourilhe Rocha; Flavio De Souza Afonso; Luciana Fazzio De Andrade; Paula Riedlinger Mont'Alverne Bordalo; Leticia Da Silva Alves; Pedro Castello Branco De Moraes; Gustavo Salgado Duque; Ricardo Mourilhe-Rocha

doi:10.12659/AJCR.951258

31 January 2026 : Case report Brazil

Cell-Free DNA Reveals Hidden Streptococcus anginosus in Cryptogenic Purulent Pericarditis in a Young Adult

Challenging differential diagnosis, Rare disease

Rafael Lessa Da Costa

^{ABDEF 1*}, Natalia Viana Lopes Pereira^{BD 1}, Ricardo Mendes Carneiro^{BD 1}, Flavia Prado Fialho Santos^{BD 1}, Julia Paulo Mourilhe Rocha

^{BD 1}, Flavio De Souza Afonso^{BD 1}, Luciana Fazzio De Andrade^{BD 1}, Paula Riedlinger Mont'Alverne Bordalo^{BD 1}, Leticia Da Silva Alves^{BD 1}, Pedro Castello Branco De Moraes^{BD 1}, Gustavo Salgado Duque^{ABDF 1}, Ricardo Mourilhe-Rocha

^{ADEF 1}

DOI: 10.12659/AJCR.951258

Am J Case Rep 2026; 27:e951258

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Figure 1 Electrocardiogram in sinus rhythm, diffuse ST-segment elevation and PR-segment depression in lead II.

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Cell-Free DNA Reveals Hidden Streptococcus anginosus in Cryptogenic Purulent Pericarditis in a Young Adult

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