Monographs on tuberculosis which devote considerable space to the physical diagnosis of this disease usually omit a discussion of cardiac displacements which are so frequently encountered in chests affected by infiltration, fibrous degeneration, collapse, shrinkage and cavitation of pulmonary tissue. Some mention is occasionally made of dextrocardia as liable to occur in extensive right-sided lesions, but minor degrees of displacement, which are so frequently taking place, are altogether forgotten. Some clinicians, however, have observed that dislocation of the heart occurs in pulmonary tuberculosis more often than is generally appreciated. Turban1 said that a displacement of the cardiac dulness several centimeters to the right, with or without displacement of the heart, is such a frequent symptom of moderate contraction of the right apex that he considers it a typical and cardinal symptom of right apical disease of some standing, and that it may be seen in many cases