Fig. 2
From: Management of orbital invasion in esthesioneuroblastoma: 14 years’ experience
Comparison of MRI before and after treatment for a 50-year-old patient with ENB (stage of C) who received definitive radiotherapy without surgery. (A) and (B) refer to axial MRI, (C) and (D) refer to coronal MRI. 1, 2 refer to MRI before treatment, after radiotherapy, respectively. MRI before treatment revealed a large mass on the left nasal cavity and ethmoid sinus, which invaded the extraocular muscle of the left orbit (A1 arrowhead, B1 arrowhead). The tumor extended to beyond the midline, left frontal sinus and sphenoid sinus, and frontal lobe (C1 arrowhead, D1 arrowhead). After radiotherapy, the patient had a complete response