Fibroleiomyomatous hamartoma of the lung.

Fibroleiomyomatous hamartoma of the lung is an extremely rare, nonneoplastic overgrowth of pulmonary muscle tissue which can be found in various sites throughout the lung. Several cases have been previously described. The case presently reviewed demonstrates the multinodular form of this entity. Fibroleiomyomatous hamartoma may also appear as a solitary coin lesion or as a diffuse interstitial pattern on chest radiographs.