BACKGROUND AND AIM Blood cysts of cardiac valves are generally seen in newborns and infants and very rarely in adults. Although in most cases they are incidental findings they may be associated to severe cardiac or systemic complications. This study analyzes incidence, presentation, and treatment of valvular blood cysts in adults. METHODS A review of the pertinent literature through a search mainly on PubMed and Medline was performed. RESULTS In patients ≥18 years of age, our search disclosed 54 patients with mitral blood cysts (mean age, 48 ± 18 years), 9 with a tricuspid valve cyst (mean age, 67 ± 15 years), 3 with a blood cyst on the pulmonary valve (age 31, 43, and 44 years), and 1 aortic valve cyst in a 22-year-old man. Most patients were asymptomatic while stroke, syncope, or myocardial infarction occurred in six patients with a mitral valve cyst. Blood cysts were removed surgically in 70% of patients with a mitral cyst, in 55% with a tricuspid cyst, and in all those with a pulmonary or aortic cyst. At histology, the cyst wall was composed mainly by fibrous tissue and with the inner surface lined with typical endothelium. CONCLUSIONS Blood cysts of cardiac valves are rare in adults but may cause life-threatening complications, particularly when located on the mitral valve. For such reason, surgical removal appears advisable, with low-risk procedures. Widespread use of multimodality imaging techniques will most likely increase the number of valvular blood cysts diagnosed also in adults.

Blood cysts of the cardiac valves in adults: Review and analysis of published cases.

Blood cysts are benign intracardiac masses that are well described in infants. We present a rare adult presentation of a blood cyst tethered to the right ventricular wall and the tricuspid valve causing right ventricular outflow obstruction. Multimodality imaging approach was found to be of great importance in the diagnosis and treatment of this patient.

Right Ventricular Blood Cyst Causing Outflow Tract Obstruction in an Adult

This report describes the diagnosis and surgical management of a pulmonary valve cystic mass in a symptomatic 7-year-old boy. Cardiac valve cysts are extremely rare beyond the age of 6 months and typically not associated with symptoms. These lesions may grow, leading to progressive stenosis, regurgitation, or ventricular outflow tract obstruction. Therefore, these lesions should be monitored for change in size and/or, hemodynamic changes. Surgical intervention may be required for symptomatic patients.

Giant Pulmonary Valve Cyst in a 7-Year-Old Child

Introducao Os cistos sanguineos no coracao sao frequentemente reconhecidos como benignos. Geralmente nao causam sintomas clinicos e sao frequentemente encontrados em bebes menores de dois meses. Na maioria dos casos, os cistos sanguineos estao nas valvulas cardiacas ou suas estruturas de suporte. Os cistos cardiacos em adultos sao extremamente raros, especialmente nas câmaras do coracao. Aqui, relatamos um caso de doenca cardiaca valvular complicada com um cisto sanguineo no atrio direito. As ecocardiografias transtoracica, de contraste e esofagica foram utilizadas [...]

Relato de Caso de Doença Cardíaca Valvular Complicada com um Cisto Sanguíneo no Átrio Direito. Revisão da Literatura

Blood cysts of the heart are benign cardiovascular tumors found incidentally in approximately 50% of infants who undergo autopsy at less than 2 months of age. These congenital cysts, frequently present on the atrioventricular valves of infants, are exceedingly rare in adults. Nonetheless, in adults, cardiac blood cysts have been found on the mitral valve, papillary muscles, right atrium, right ventricle, left ventricle, and aortic, pulmonic, and tricuspid valves. Reported complications include left ventricular outflow obstruction, occlusion of the coronary arteries, valvular stenosis or regurgitation, and embolic stroke. In high-risk patients with severe aortic stenosis, transcatheter aortic valve replacement has emerged as an alternative to surgical replacement. Transesophageal echocardiography plays a fundamental role in evaluating the feasibility of intraprocedural transcatheter aortic valve replacement, in measuring aortic annular size, in guiding placement of the prosthetic device, and in looking for possible complications. The embolic risk of rapid pacing and transcatheter aortic valve replacement in a patient with an intracardiac blood cyst is unknown, and such a case has not, to our knowledge, been reported heretofore. We present the case of a 78-year-old woman with severe aortic stenosis, in whom a blood cyst was incidentally found in the left atrium upon transesophageal echocardiography. She underwent successful transcatheter aortic valve replacement without embolic complication.

Incidental left atrial blood cyst in a patient undergoing transcatheter aortic valve replacement.

A 68-year-old man underwent coronary angiography for postinfarction angina, which revealed right coronary artery stenosis and a mass in the left ventricle. Transesophageal echocardiography showed a large blood cyst originating from the anterior papillary muscle of the mitral valve. Coronary artery bypass grafting was performed and the cyst was successfully excised.

Giant Blood Cyst of the Mitral Valve

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Giant Blood Cyst of the Mitral Valve