An Unusual Neck Tumor in Adult: A Case Report.

Cystic Hygroma (CH) also referred to as lymphangioma, is a cystic malformation of the lymphatic vessels that can occur anywhere in the body. Its incidence in adulthood is considered rare and its occurrence in the neck is even rarer and only a few case reports are available till date. We present a case of adult CH of the neck and the literature review of the same. A 30-year-old male presented with painless swelling in the left side of the neck of 2 years duration. Investigations showed a cystic mass on the left lower anterior part of the neck which was surgically removed in-toto with the intact capsule. The biopsy report confirmed the diagnosis. A differential diagnosis of CH should be considered when a cystic lesion is encountered in the neck of an adult, cytological and radiological evaluation is necessary for defining its location and diagnosis. Although various conservative modalities of management are available, they are employed only in certain situations, and surgical excision of CH is considered the gold standard. The chances of recurrence range from 15 to 20%.