CYSTIC HYGROMA is a congenital defect which is histopathologically benign. However, it has a definite tendency to be clinically malignant when its infiltrative characteristics or sheer size cause it to become a problem involving airway, deglutition, or nerve function. It is a lymphangiomatous tumor which is usually found in the neck but has been reported in the axilla, the inguinal region, and the retroperitoneal space. Hygroma commonly presents in the newborn, or in the first year of life, and almost always before the 14th year. Sex or race predominance is not noted.1 There is a great tendency to marked fluctuation in size, which is helpful in the diagnosis. It is doughy and poorly delineated on palpation. The small hygromas frequently present in the posterior triangle. These characteristics help to differentiate it from branchial cleft cysts and thyroglossal duct cysts, which are usually tense and are found in the anterior
Barnhart RA, Brown AK. Cystic Hygroma of the Neck: Report of a Case. Arch Otolaryngol. 1967;86(1):74–78. doi:10.1001/archotol.1967.00760050076016
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