Rapid response to radiotherapy in unresectable tracheal adenoid cystic carcinoma: A case report

Figure 2 Bronchoscopic findings. A: Pre-treatment revealed that a large polypoid intra-luminal mass, with its surface presenting rich vascular networks and nodular protrusions; B: After receiving 40 Gy, bronchoscopy indicated that the previous large polypoid intra-luminal mass was significantly eliminated.