ATYPICAL AESTHESIONEUROBLASTOMA - CT AND MRI FINDINGS

Aesthesioneuroblastoma is an uncommon tumour of the superior nasal cav ity, originating from the olfactory mucosa. Usually no specific radiol ogical features indicate the diagnosis; normally these tumours are see n on CT as homogeneous, enhancing, soft tissue masses causing bone rem odelling. Typical but quite nonspecific MRI findings include high sign al on T2-weighted images and strong enhancement after gadolinium. The extent of tumour in the paranasal sinuses and anterior cranial fossa i s best assessed with MRI after intravenous gadolinium, and this is con sidered as the most accurate method for assessing preoperative resecta bility. We report an aesthesioneuroblastoma in an atypical location, w ith extensive calcification.