Cystic Pulmonary Chondroid Hamartoma: A Case Report

composed of varying proportions of mesenchymal tissues including cartilage, fat, epithelial, and connective tissue combined with entrapped respiratory epithelium (1). Pulmonary hamartomas are the most common benign neoplasms of the lung, accounting for 7-14% of benign solitary pulmonary nodules (1, 2). Pulmonary hamartomas are most commonly presented as incidental lung nodules found on a routine chest radiographic examination in asymptomatic individuals. Previous reports of cystic chondroid hamartomas have been made (2-7), but are extremely rare. We report a case of cystic pulmonary hamartoma which was manifested as a cystic lesion with a solid component. The diagnosis was characterized as a clearly identified popcorn-like calcification, which enabled us to make a confident diagnosis of the disease.