Discussion of Pulmonary harmartoma
- Hamartomas are the most common benign pulmonary neoplasm.
- Prevalence of hamartomas at autopsy has been reported at nearly 0.25%.
- Hamartomas may be chondromatous or leiomyomatous, the former being more common.
- They are unencapsulated, lobulated tumors with connective tissue septa.
- Patients present between the 4th and 7th decades of life.
- Male predilection of 2:1 to 3:1.
- Typically, hamartomas manifest incidentally as solitary nodules in the periphery of the lung.
 Imaging Findings for Pulmonary harmartoma
 Plain film
- Conventional radiographs show a sharply demarcated pulmonary nodule that may contain popcorn calcifications characteristic of the chondroid calcifications in hamartomas.
- This pattern is a reliable indicator of a benign lesion but is present in only a minority of cases.
- At CT, the reported prevalence of calcification in hamartomas varies from 5% to 50%.
- Fat is identified in up to 50% of hamartomas at CT and may be localized or generalized within the nodule. Intranodular fat at -40 HU to -120 HU is considered a reliable indicator of a hamartoma.
 See Also
 External Links
 References for Pulmonary harmartoma
- Scott C. Gaerte, Cristopher A. Meyer, Helen T. Winer-Muram, Robert D. Tarver, and Dewey J. Conces, Jr. Fat-containing Lesions of the Chest. RadioGraphics 2002 22: 61S-78S