,POSTOPERATIVE DIAGNOSIS: , Posterior mediastinal mass with possible neural foraminal involvement (benign nerve sheath tumor by frozen section).,OPERATION PERFORMED:,  Left thoracotomy with resection of posterior mediastinal mass.
,POSTOPERATIVE DIAGNOSIS : , Posterior mediastinal mass with possible neural foraminal involvement ( benign nerve sheath tumor by frozen section).,OPERATION PERFORMED : , Left thoracotomy with resection of posterior mediastinal mass .