Primary Schwannoma of the Right Atrium: Successful Surgical Resection

Pulmonary edema secondary to a cardiac schwannoma in a dog

“…11e13 It frequently arises from the nervous system of the heart, primarily on the right side, especially from the right atrium. 3,4,11,12,16 The reason postulated for this location is that the origins of cardiac schwannomas are from cardiac branches of the vagus nerve and cardiac plexus. 4,11,16 Schwannomas can occasionally be found in the left atrium or near the left ventricle.…”

“…3,4,11,12,16 The reason postulated for this location is that the origins of cardiac schwannomas are from cardiac branches of the vagus nerve and cardiac plexus. 4,11,16 Schwannomas can occasionally be found in the left atrium or near the left ventricle. 12,13,16 The presence of multiple intracardiac schwannomas in this case is unusual.…”

“…4,11,16 Schwannomas can occasionally be found in the left atrium or near the left ventricle. 12,13,16 The presence of multiple intracardiac schwannomas in this case is unusual. It is possible that these could represent metastases; however, malignancy was not supported by cell morphology or invasion, and a primary mass was not noted elsewhere in the patient.…”

“…When located on the right atrium or in the pericardial sac, external compression of structures and pericardial effusion may occur. 16 In people, this often results in the symptoms of chest pain, dyspnea, or syncope. 14,15 When located inside the cardiac chambers, as in our case, valvular obstruction or regurgitation may lead to clinical signs of congestive heart failure.…”

Primary malignant peripheral nerve sheath tumour of the heart

“…In addition, it is usually required to for the reconstruction of cardiac chambers [10][11][12][13][14][15]. Therefore, this is best achieved when tumors are encapsulated and well demarcated [16][17][18][19]. However, most research note local recurrence of tumor or metastasis from 2 to 10 months following the operation.…”