17-Year-Old Runner with Shin Pain

(A and B) Anterior blood flow (A) and blood pool (B) images demonstrate symmetric distribution of radiotracer. (C and D) Anterior (left) and posterior (right) views (C) and right medial and left lateral (left) and left medial and right lateral (right) views (D) of lower extremities demonstrate linear multifocal increased uptake along posteromedial cortex of distal right tibia (solid arrow) and minimal scattered foci along medial cortex of left tibia (dotted arrow).