[Lung cancer as a scar tumor: apropos a case and the possible etiopathogenetic mechanisms].

The true existence of "scar tumors" is still being argued. A case of a 30 years old patient with an adenocarcinoma of the lung which grew on a scar secondary to a motorbike accident that happened 15 years earlier is here presented. The age of the patient, the pathology of the tumor, the radiological demonstration of the tumor progressively growing on and around a preexistent scar, as well as the long period of time that elapsed in between the initial etiological factor and the final diagnosis leave very few doubts about the "scar" origin of this neoplasia. Previously undescribed and possible etiopathogenetic mechanisms of these tumors are considered from the biochemical and energetic points of view.