'Adenomyomatous' hamartoma of the lung.

A 53-year-old man presented with a lung mass. A segmentectomy of the left lung was performed, and pathologic examination revealed an unusual hamartomatous lesion in the lung, named 'adenomyomatous hamartoma.' The tumor was composed of multicysts lined by ciliated pseudostratified bronchial epithelium and smooth muscle overgrowth. The authors have proposed that this is a distinct entity that has not previously been described in the English literature.