A Venous Malformation: An Unusual Primary Cardiac Tumor in Children.

This case report describes a primary cardiac tumor, classified as venous malformation, diagnosed in an asymptomatic child. The tumor was located in the left atrium near the mitral valve without affecting the mitral valve's functioning. Complete resection of the lesion was performed because of the risk of systemic embolism. The lesion consisted of fibrous tissue with multiple venous vascular channels. The patient did not have similar lesions in other locations. Vascular primary cardiac tumors are extremely rare. Hemangiomas and lymphangiomas have been described previously, but to our knowledge, this is the first primary cardiac tumor identified as a venous malformation.