A mitral blood cyst causing stenosis in the left ventricular outflow tract:A case report

Abstract

Intracardiac blood cysts are commonly observed in the autopsies of fetuses and infants. Most patients are below six months of age, andmost cysts spontaneously regress with aging. Intracardiac blood cysts are rarely described in children and adults. A nine-year-old girl wasadmitted to our clinic with atypical chest pain. Echocardiography revealed a cystic formation on the anterior mitral leaflet. The cyst causedthe obstruction of the left ventricular outflow tract. The patient was evaluated by a multidisciplinary team, and surgical intervention wasdecided. After cyst resection, the mitral valve did not require further intervention. Histopathological examination confirmed that the cystwas a mitral blood cyst. The patient was discharged without any postoperative complications.