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A 7 year old boy presents to the clinic with a neck mass. It was noticed by a parent 5 days ago and remarked it has not changed in size.

The child has been noted to have a fever. There have been no sick contacts. His immunizations are up to date. The child has been growing well.

Past Medical History: The child has mild eczema.

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

On examination the child appears tired. There is a unilateral 3 cm mass located in the left anterior cervical chain. The mass is warm, painful, fluctuant and mobile. The overlying skin is mildly 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