A rare case of partial cor triatriatum diagnosed at an adult age: a case report.

Background: Cor triatriatum sinistra (CTS) is a rare condition where the left atrium (LA) is divided by a thin membrane into an upper and lower chamber. Incidentally, the diagnosis is made in late adulthood, usually because of a favourable variant such as in our patient who presented with partial CTS.

Case Summary: We present the case of a 62-year-old female who presented with COVID-19.