[Differential diagnosis of peripheral lung cancer and hamartoma]

Under study were clinico-roentgenological data on 102 patients with peripheral lung cancer, which were compared with analogous materials of 54 hamartoma observations. The observations indicated, that it is nearly always feasible to recognize peripheral cancer of the lung and hamartoma based on the anamnesis and clinico-roentgenological findings. A valuable adjunct in establishing the diagnosis of spheroid lung cancer is a roetgenological "flame sympton" i.e. indistrinct radiating peripheral (lateral) portion of the cancer node contour, observed by the authors.