67
96
18
37.0
100/70

A 15 year old boy is presenting for unilateral left leg pain with limp for the past 2 weeks. He has no past medical history. He had trauma when playing basketball  a week prior to the symptoms. The pain is dull and mainly over night. The patient has no fever. Review of systems (ROS) reveals no night sweats, weight loss, or fatigue. The joint exam shows a palpable mass over the left tibia. Labs show an elevation of LDH and alkaline phosphatase. Patient had slightly elevated ESR, CRP and WBC. 

What is the most probable cause for the pain/limp?

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Authors

Dr. Josee Anne Gagnon

joseeanne.gagnon@ens.chuq.qc.ca

Dr. Maude Veilleux-Lemieux

maude.veilleux-lemieux@chudequebec.ca

Reviewer

Dr. Nicole Johnson

nicole.johnson@ahs.ca