Unicentric Castleman's disease (CD) is a rare benign lymphoproliferative disorder. A cervical location has rarely been reported in the pediatric literature.
A 13-year-old boy presented with a mass in the right neck region of 3 months' evolution. Clinical examination revealed a smooth mobile 5 cm node deep in the sternocleidomastoid muscle. The diagnosis of hyaline vascular type CD was confirmed by complete surgical excision and histopathologic examination. Postoperative course was simple, without recurrence over 1 year's follow-up.
Cervically located CD often shows few symptoms, and is rarely suggested by a cervical mass found in children. Definitive diagnosis is histopathological. The hyaline vascular type of unicentric CD has a good prognosis after complete resection of the lesion.