Figure it out fridays 

 A 46-year-old asymptomatic man with history of tumor resection for parapharyngeal schwannoma 1 year ago, presents for evaluation of an abnormal cardiac shadow that was found incidentally. Computed tomography and transesophageal echocardiography revealed a cardiac tumor originating from the posterior wall of the left atrium, an atrial septal defect, and two other mediastinal tumors. The cardiac mass was completely excised with normal margins of the surrounding atrial wall. The post-resection defect and atrial septal defect were repaired using bovine pericardium. Pathological findings were compatible with benign schwannoma, and a diagnosis of schwannomatosis was made based on his medical history.The most common site of schwannoma is: 

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A. Vestibular schwannomas

B. Cardiac schwannomas

C. Spinal nerve root schwannomas