Benign nerve sheath tumours from facial nerve trunk or its branches
May be solitary or multiple
Associated with NF1
Imaging:
Oval shaped welldefined homogeneous isoattenuating lesions with or without multiple small cystic areas; show moderate enhancement
On MR low-to-int on T1 and high on T2; show intense enhancement
References:
Lowe LH et al. Swelling at the Angle of the Mandible: Imaging of the Pediatric Parotid Gland and Periparotid Region. Radiographics. 2001;21:1211-1227