Pulmonary hamartoma is the third most frequent cause of solitary pulmonary nodules with an overall prevalence of up to 5.7% (1), and chondromatous hamartoma is the most common type of pulmonary hamartoma (2). Masses are composed of abnormal mixtures of epithelial and mesenchymal elements, such as cartilage, fat, fibromyxoid tissue, smooth muscle, and bone (3, 4). In spite of its relative frequency, no report has been published that details the CT findings of pulmonary hamartomas with rare pathologic patterns, such as fibrous or fibroleiomyomatous types. Here, we describe, for the first time, the unusual contrastenhanced CT findings of pulmonary hamartoma with a predominant fibroblast component and their relations with histopathologic findings. This case report was approved by our Institutional Review Board.