lung hamartoma

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Hamartomas are common, benign lung tumours that often are discovered incidentally on chest x-ray. They are mesenchymal in origin and are usually composed of mature, hyaline cartilage.

Most are found in middle aged or elderly patients, usually men. They are rarely symptomatic.

On chest x-ray, the hamartoma is usually seen as a circular, well defined radiopacity that is located peripherally. Most are 1-3 cm in diameter. It may be described as a "coin lesion". Occasionally, hamartomas are endobronchial or multiple.

Treatment is by surgical resection. The prognosis is excellent.

Last reviewed 01/2018