title: The sonographic "coffee bean" sign helps distinguish an axillary neurofibroma from a lymphadenopathy.
abstract: Axillary masses may represent various soft tissue tumors or lymphadenopathy. Neurofibromas are benign peripheral nerve sheath tumors and, while they are very uncommon, it is important to remember that neurogenic tumors arising from brachial plexus can develop in the axilla. We describe an axillary neurofibroma arising from the brachial plexus that presented with a "coffee bean sign" on sonography that distinguished it from axillary lymphadenopathy.
authors.affiliation: Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan-city, Kyunggi-do, Korea.
authors.forename: Sung Eun
authors.initials: SE
authors.lastname: Song
authors.forename: Bo Kyoung
authors.initials: BK
authors.lastname: Seo
authors.forename: Jung-Woo
authors.initials: JW
authors.lastname: Choi
authors.forename: Gil-Soo
authors.initials: GS
authors.lastname: Son
authors.forename: Kyu Ran
authors.initials: KR
authors.lastname: Cho
authors.forename: Baek Hyun
authors.initials: BH
authors.lastname: Kim
mesh_terms: D001365:Axilla / Q000294:innervation*; D001917:Brachial Plexus; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008206:Lymphatic Diseases / Q000000981:diagnostic imaging*; D008875:Middle Aged; D009455:Neurofibroma / Q000000981:diagnostic imaging*; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging*; D018615:Ultrasonography, Doppler, Color
keywords: axilla; brachial plexus; neoplasms; neurofibroma; peripheral nerves; ultrasonography