In 1932 he became a Fellow of the
Royal College of Surgeons of Edinburgh and decided to train in thoracic surgery, a surgical speciality which was then in its infancy. He worked in Newcastle under
Professor George Grey-Turner who had pioneered thoracic surgical procedures including blunt
oesophagectomy. In 1934 Logan assisted his colleague George Mason at the first
pneumonectomy in Britain on a 15-year-old patient with
bronchiectasis. This involved detaching the lung but leaving it in the
thoracic cavity. Logan later described how he was left to remove the necrotic lung as planned on the 10th post-operative day. During
World War II he served in the
Royal Army Medical Corps ending with the rank of lieutenant-colonel. He served in
Egypt and in Palestine where he was surgeon in charge of a thoracic surgical unit. At the start of the
National Health Service in 1948, he was asked to set up a thoracic surgical unit in Edinburgh, initially at the Eastern General Hospital moving to the Edinburgh City Hospital in 1952. This unit became the regional thoracic surgical unit for south east Scotland, initially dealing mainly with
pulmonary tuberculosis,
lung cancer and
oesophageal cancer. As cardiac surgery was developed he established a cardiac surgery unit at the Royal Infirmary of Edinburgh. Logan devised an operation for
mitral stenosis for which he gained an international reputation. He designed a mitral valve dilator, introduced through the
left ventricle and achieved impressive results with this technique. The instrument was modified by Oswald Tubbs, who added a screw, and by
Russell Brock and the procedure became widely used until the advent of open heart surgery. In 1968 he performed the first
lung transplant in the UK (the fifth in the world) on a patient whose lungs had been damaged by
paraquat poisoning. == Honours ==