Giant Cardiac Glomangioma With Extensive Intravascular Extension

BACKGROUND: Cardiac glomangioma is an exceptionally rare subtype of glomus body tumors, with most found in the dermis and soft tissues of the extremities. Visceral involvement, particularly of the heart, is exceedingly rare. CASE SUMMARY: We report a rare case of a large glomangioma extending from the right ventricular free wall into the right atrium and inferior vena cava, reaching the left common iliac vein, which was successfully treated with surgical excision and excellent clinical outcome. DISCUSSION: Cardiac glomangiomas are extremely rare, and manifestations vary depending on size and location, commonly including dyspnea, arrhythmias, or heart failure. Multimodality imaging is essential for accurate characterization and surgical planning. Complete surgical excision remains the definitive treatment and is crucial to reduce recurrence. TAKE-HOME MESSAGES: Cardiac glomangioma is a rare but important differential diagnosis for right-sided intracardiac and intravascular masses. Multimodality imaging is essential for defining tumor extent and guiding surgical management.