Carbon Ion Beam Radiotherapy for Sinonasal Malignant Tumors Invading Skull Base

Figure 2

A 43-year-old Japanese female with adenoid cystic carcinoma in skull base. Axial, coronal, and sagittal contrast T1-weighted magnetic resonance image before carbon ion beam radiotherapy, dose distribution of carbon ion radiotherapy in axial CT image, and axial contrast-enhanced T1-wighted magnetic resonance image 30 months after carbon ion radiotherapy show enhancement and edema. This patient received no treatment for cerebral radiation injury. CIRT: carbon ion beam radiotherapy.