Right Ventricular Blood Cyst Causing Outflow Tract Obstruction in an Adult

Abstract

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.

Incidental Finding of a Tricuspid Valve Cyst in a Patient with a Ventricular Septal Defect

“…Several case reports describe surgically operated cysts involving the tricuspid valve removed due either to obstructive symptoms or as incidental findings [4,5]. Surgically removed blood cysts have been reported in adult and pediatric patients including a giant tricuspid valve blood cyst causing right ventricular outflow tract obstruction in a 4-month-old infant [6][7][8]. An entodermal inclusion cyst covering the septal leaflet of the tricuspid valve in a 5-year-old boy with DCRV, VSD, atrial septal defect, and subvalvular aortic stenosis has been described [4].…”

Characterization of a calcified intra-cardiac pseudocyst of the mitral valve by magnetic resonance imaging including T1 and T2 mapping

“…When all aspects of soft-tissue signal and dynamic characteristics were considered together, the lesion could not be assigned to any of the suspected diagnoses: The morphological findings ruled out caseous calcification of the mitral valve [13] as well as valvular calcified thrombus [5], first-pass gadolinium uptake was inconsistent with the diagnosis of an intra-cardiac cyst [5,14], and the lack of pronounced late gadolinium enhancement excluded the diagnoses of myxoma and papillary fibroelastoma [5,15]. Overall, the findings mainly supported the diagnosis of a calcified intra-cardiac cyst of the mitral valve, because first pass contrast uptake was small and might have been neglected in cases of intra-cardiac cysts reported in literature (Table 1).…”