skip to main content

Cystic Hygroma — RACP Paediatrics MCQ

Instant feedback + full explanation. One question, done properly.

EasyGenetics & MetabolicCystic HygromaRACP Paediatrics

A 7-year-old boy presents with a painless unilateral neck mass anterior to the sternocleidomastoid muscle. It transilluminates brilliantly. It has been present since birth and slowly enlarging. What is the most likely diagnosis?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — Cystic hygroma (lymphatic malformation)

Cystic hygroma (lymphatic malformation) is a congenital lymphatic anomaly that presents as a soft, compressible, brilliantly transilluminant mass, most commonly in the posterior triangle of the neck. Treatment options include observation, sclerotherapy, or surgical excision for symptomatic or enlarging lesions.

Reference: RCH Melbourne – 2024 – Clinical Practice Guidelines: Neck Masses