14.   15 year old boy with progressive pain in the right arm for 4 mo.  Plain radiography of the limbs showed a diaphyseal humeral tumor, which was resected, followed by chemotherapy.

Diagnosis = Ewing sarcoma (primitive neuroectodermal tumor) of bone


(Mouse-swipe link below, right-click, & choose "Open Link")

https://en.wikipedia.org/wiki/Ewing%27s_sarcoma