Multiple endobronchial granular cell myoblastomas discovered at bronchoscopy.

Granular cell myoblastoma is an uncommon benign tumor. Most cases of endobronchial involvement are detected as they become symptomatic. Multiple tumors of the bronchial tree are quite rare, having been reported infrequently in the English literature. The authors report a case with two-year follow-up, which is unique in that the tumors were asymptomatic and were discovered incidentally at bronchoscopy.