<prompt> A surgeon is exploring the mediastinum found a thymic mass invading the neighboring pericardium and phrenic nerves. Frozen section is showing benign thymoma. The next intraoperative plan should beAbandon the surgery sta chemotherapyAbandon the surgery sta radiotherapyComplete resection of tumorClose the mediastinum and wait for final repo  <response>: Answer- C. Complete resection of tumorThe treatment of choice for the patient presented in the question is as complete a resection as possible while at Ieast one phrenic nerve is preserved.Postoperatively, the patient should receive x-ray therapy, and the combination of surgery plus irradiation offers a good chance of satisfactorily controlling the neoplasm. 