Pulmonary Involvement in Proteus Syndrome: Clinical and Imaging Correlates in a Rare Case.

Proteus syndrome is an uncommon, sporadic disorder characterized by progressive and heterogeneous overgrowth of tissues, resulting in distorted and asymmetric development. In most individuals, Proteus syndrome has minimal to no manifestations at birth but progresses during childhood and adolescence. Clinical manifestations of the disease include isolated asymmetric hemihyperplasia, isolated asymmetric macrodactyly, subcutaneous masses, plantar and palmar cerebriform fibrous overgrowth, exostoses, epidermal nevi, and scoliosis. Cardiothoracic structures are less commonly involved, and the manifestations include cystic lung changes, pulmonary thromboembolism and varicosities, and pulmonary nodules. Patients with Proteus syndrome have an increased risk of early death due to deep venous thrombosis and pulmonary embolism. We report a case of an adult female who was diagnosed with Proteus syndrome at the age of 5 years who had multiple pulmonary manifestations of the disease.