Professor Alexandru Pop was a student of the Faculty of Medicine in Cluj, graduated in 1921, after he began medical studies in Budapest. He has worked ever since the student time at the Institute of Descriptive Anatomy and Topographic led by Professor Victor Papilian, then he was assistant at the Institute of Pathological Anatomy, at Medical Clinic I and since 1925 at the Surgical Clinic I led by Prof. Iacob Iacobovici. He get all levels of command, becoming assistant lecturer, lecturer and, since 1933, professor in the Department of Surgery, at Faculty of Medicine in Cluj, instead of Professor Iacobovici, who went to Bucharest. He manages the department of surgery for the Study and Prevention of Cancer Institute, founded in 1929.
Between 1928 – 1930 he is making specialization abroad – in Munich, Berlin, Vienna, Dijon, Strasbourg, Paris. He had a special surgical skill, he introduced new techniques in gastrointestinal surgery, published a series of monographs, was a member of the Romanian Academy and member of numerous surgical societies in the world (Germany, France, etc.). Immediately after 23 August 1944, at his request, he leave to Western Front, as head of a volunteer surgical team, taking an active part in operations on the front of the lst Army in Transylvania and Hungary. In December 1948 the communist authorities remove him from the Clinic that he led and organized with distinction. Who, as under the indications of the communist party, would have to replace the leadership of Professor Alexandru Pop at Surgical Clinic I, was Professor Emil Ţeposu, head of the Urology Clinic of the Clinics Palace located across the street from the Surgical Clinic I. Prof. Ţeposu was suppose to be the accuser of Prof. Pop, as Lecturer Moga was the accuser of Prof. Haţieganu. This was thought inconceivable by professor Ţeposu who, after deep unrest, ends tragically, by suicide and ending his life so prematurely, at 58 years.