Granular cell tumor of the lung and tracheobronchial tree: Two case-presentation with a review of the literature

Pulmonary granular cells tumors (CGT) are rare tumors, that derive from Schwann cells. In the tracheobronchial and pulmonary tree, they remain a diagnostic challenge. There no well-established criteria to differentiate between benign, atypical, malignant GCT. Moreover, its real frequency in respiratory tract is still unknown. Here, we represent 2 cases of bronchial lung GCTs. We aim highlight all clinicopathological characteristics this tumor tree location based on our available literature large systematic review.