Pulmonary alveolar microlithiasis is a rare disease of unknown etiology. There is a formation of calcific bodies within the alveoli. The X-Ray shows extensive infiltration of both lungs. So far less than 100 cases were reported. However, we are unware of a case with pectus excavatum. In this report we discuss a case of pulmonary alveolar microlithiasis with pectus excavatum, and its treatment and medical intervention.