Surgical results for the treatment of primary XXXX .

@entity1 @entity2617 @entity5 @entity2 @entity3
In order to examine the effectiveness of surgical therapy for primary @entity2 , 200 surgical @entity1 were reviewed. Survival rates were compared to the initial operative approach, the @entity5 stage, and the histological type. The five year survival rate was 62% for Stage 1 @entity5 , 60% for Stage 2, 21% for Stage 3 and 32% for Stage 3 when @entity3 were confined to the ipsilateral hilar lymph nodes. The most profound influence on prognosis was exerted by the presence or absence of @entity3 to the mediastinal lymph nodes. Other factors such as @entity5 size, histological type, and degree of differentiation did not appear to affect prognosis. With extended resections of the adjoining organs, a 5 year survival rate of 37% was obtained in @entity1 in whom the @entity2617 did not extend beyond the boundaries of the aortic adventitia, pleura, or pericardium. However, it was 0% when this boundary was broken. The CT scan was found to be helpful in the preoperative identification of @entity2617 . In some @entity1 with preoperative CT scans demonstrating limited infiltration, the left atrium or aorta was resected and satisfactory long term survival was obtained. Finally we examined the effectiveness of the addition of radical lymphadenectomy of the right mediastinal nodes during the treatment of @entity2 . This was performed by adding a median sternotomy to the standard left thoractomy and was well tolerated.
