Autotransplantation and Concomitant Pneunectomy for an Intracardiac Metastatic Lesion and Primary Pulmonary Blastoma of the Left Lung / 日本心臓血管外科学会雑誌

Pulmonary blastoma is rare and its prognosis very poor. A 6-year-old boy was referred to our hospital with chest pain. Computed tomography demonstrated that the left pleural cavity was filled with a tumor. Cardiac echocardiography demonstrated that the tumor had invaded through the pulmonary vein into the left atrium and that the tumor extended into the left ventricle. Part of the tumor was adhered to the anterior leaflet of the mitral valve. To increase operative radicality, an autotransplantation technique was performed concomitantly with resection of the original lesion. Through a median sternotomy, a moderate hypothermic cardiopulmonary bypass was established to obtain cardiac arrest. First, longitudinal incision of right-sided of the left atrium was made. The tumor invaded into the left atrium through the left superior pulmonary orifice. The ascending aorta, the main pulmonary artery, and both caval veins were transected. The left atrium was incised along the pulmonary venous orifices. The heart was completely removed from the mediastinum and transferred to another table. Resection of the intracardiac metastatic lesion and mitral valve replacement was accomplished. During this time, thoracic surgeons performed a left pneunectomy. The left atrial wall around the left pulmonary venous orifices was resected in combination with the left lung. After the deficit of the left atrial wall was repaired with a Gore-Tex patch, the heart was replaced and we reconstructed the great arteries and caval veins. The autotransplantation technique is a useful procedure for combined lesions of the heart and lung.

A Successful Case of Sutureless Pulmonary Artery Plasty Using Autologous Tissue for Severe Pulmonary Stenosis after a Rastelli Operation / 日本心臓血管外科学会雑誌

An 11-year-old boy, who underwent a Rastelli operation using a 14mm artificial graft and left pulmonary artery (PA) plasty with an autologous pericardium patch 7 years previously, had severe recurrent left pulmonary stenosis. Reoperation was performed including right ventricular outflow tract reconstruction and left PA plasty. The PA at the most stenotic site was only 2mm in diameter; it was enlarged to 10mm by good exposure and an incision on the pulmonary intima. A bovine pericardium patch with a handmade ePTFE valve was sutured onto the autologous tissue not onto the pulmonary intima to avoid restenosis and in expectation of the growth of the pulmonary orifice. On postoperative 3-D CT, the left pulmonary artery was patent and 9mm in diameter. Pulmonary scintigraphy showed an improvement in the left pulmonary perfusion. This sutureless technique was useful in this case of severe pulmonary stenosis.