Almost a century ago, Hodgkin described the disease that bears his name. It has many varying clinical and roentgenologic aspects, and has been the subject of numerous publications. The disease invades various organs and systems of the body, and is often difficult to diagnose. Longcope1enumerated the possible confusions, and especially stresses our liability to fail in differentiating tuberculosis from Hodgkin's disease. If further investigations substantiate the belief of L'Esperance2that the avian tubercle bacillus is responsible for Hodgkin's disease, the similarity and so-called coexistence of the two diseases in one subject will be explained. In discussing a series of 173 cases, in 85 of which there were lesions of the chest, Burnam3stated that only 8 presented pleural effusions, but "pictures simulating tuberculosis were commoner." This same difficulty of differentiating the two diseases appears constantly in reports of cases by Longcope,1Burnam,4Whitaker,5Lemon and