<prompt> Pancoast tumor isSuperior sulcus tumorInferior sulcus tumorMedian sulcus tumorNone of the above  <response>: Ans. is a i.e., Superior sulcus tumor 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.Most Pancoast tumors are non-small cell cancers i.e. squamous cell carcinomas SCCs or adenocarcinomas. 