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A 7 year old boy presents to the clinic with a neck mass. It was noticed by a parent 4 days ago and remarked it has markedly grown in size.

The child has felt warm. There have been no sick contacts. His immunizations are incomplete. The child has been growing well.

Past Medical History: The child was previously well.

Family History: positive for Crohn's disease in the father.

On examination the child appears unwell. There is a unilateral 3 cm mass located in the left anterior cervical chain. The mass is warm, non-tender, somewhat fluctuant and mobile. The overlying skin is red. 

What is the most likely diagnosis?

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Authors

Dr. Susan Bannister

Susan.Bannister@ahs.ca

Anindita Bhattacharya

anindita.bhattachary@ucalgary.ca

Dr. Angela Punnett

angela.punnett@sickkids.ca

Dr. Erin Peebles

erin.peebles@lhsc.on.ca

Reviewer

Dr. Mumtaz Virjii

mvirji2@cw.bc.ca