<prompt> Pancoast tumor is?Superior sulcus tumorInferior sulcus tumorMedian sulcus tumorNone of the above  <response>: Ans. is a i.e., Superior sulcus tumor Pancoast tumor pulmonary sulcus tumor or superior sulcus tumorlo It is a tumor of the pulmonary apex typically found in conjunction with a smoking history. It is situated at the top end of either the right or left lung.o Most Pancoast tumors are non-small cell cancers i.e. squamous cell carcinomas SCCs or adenocarcinomaso It typically spreads to nearby tissues such as the ribs and vertebrae. The growing tumor can cause compression of a brachiocephalic vein, subclavian artery, phrenic nerve, recurrent laryngeal nerve, vagus nerveo Compression of a sympathetic ganglion resulting in a range of symptoms known as Horners syndrome ptosis, miosis, hemianhidrosis, enophthalmos. 