B. J. Arun1, B. Vidyasagar2, B. P. Rajesh3, Guruprasad Antin4
ABSTRACT: Pneumomediastinum is a well recognized clinical entity, it was first described as a complication of trauma by Laennac in 1819, spontaneous Pneumomediastinum as an entity was initially introduced into medical literature in 1939 by Hamman, from whom Hammanâ??s sign is derived. We present here a case of Pneumomediastinum developing spontaneously after spirometry in 18 years old boy who was a known asthmatic and had marfanoid habitus.