Key result
Multimodal imaging accurately identifies congenital mitral valve blood cysts, enabling safe conservative management without surgery.
Why the study?
Congenital blood cysts of the cardiac valves are rare incidental findings that can be diagnostically challenging when discovered during evaluation of concurrent cardiac pathology or trauma.
Case Report (n=1)
This case highlights the essential role of multimodal imaging in characterizing incidental cardiac masses and supports conservative management for asymptomatic congenital blood cysts of the mitral valve.
May allow safe conservative management of incidental mitral valve cysts post-trauma when imaging excludes injury; leaves open need for larger confirmatory studies.
BACKGROUND: Congenital blood cysts of the cardiac valves are rare incidental findings most commonly affecting the mitral valve and can be diagnostically challenging when discovered during evaluation of concurrent cardiac pathology or trauma. CASE SUMMARY: A 31-year-old woman presented as a level 1 trauma activation after sustaining multiple stab wounds to the left chest. Computed tomography identified pneumopericardium and a left ventricular hypodensity concerning for thrombus or laceration. Transthoracic echocardiography revealed a mitral valve mass. Transesophageal echocardiography further characterized it as a 2.0 × 1.5 cm cystic structure attached to the ventricular aspect of A2/A3 scallops of the mitral leaflet. Cardiac magnetic resonance confirmed a water-based cystic lesion with no perfusion or enhancement, establishing the diagnosis of a congenital blood cyst. DISCUSSION: This case illustrates the critical role of multimodal imaging in differentiating congenital blood cysts from traumatic cardiac lesions. TAKE-HOME MESSAGES: Multimodal imaging is essential to distinguish congenital blood cysts from traumatic cardiac injury, preventing unnecessary surgical intervention. Conservative management with surveillance imaging is appropriate for asymptomatic blood cysts without significant valvular dysfunction.
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Bravo et al. (2026) conducted a case report in Congenital blood cyst of the mitral valve (n=1). Conservative management and multimodal imaging surveillance was evaluated on Stability of the cystic lesion and absence of valvular complications. Multimodal imaging successfully differentiated a benign congenital mitral valve blood cyst from traumatic cardiac injury, allowing for safe conservative management without surgical intervention.
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