title: The ring sign: a new ultrasound sign of peripheral nerve tumours.
abstract: The ultrasound ring sign is reported in two patients with benign nerve tumours. The echogenic ring lies within the mass rather than at its periphery. This appearance has not been described previously in nerve tumours.
authors.affiliation: Department of Clinical Radiology, Royal Infirmary, Edinburgh, UK.
authors.forename: I
authors.initials: I
authors.lastname: Beggs
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D009442:Neurilemmoma / Q000000981:diagnostic imaging*; D009455:Neurofibroma / Q000000981:diagnostic imaging*; D010524:Peripheral Nervous System Neoplasms / Q000000981:diagnostic imaging*; D014463:Ultrasonography