Fig. 5

A 57-year-old man with left ankle pain for more than 5 years, history of a minor sprain, and other medical histories. CT sagittal (a) and coronal (c) images show multiple consecutive small bursae with sclerosis of the surrounding bone visible in the subchondral bone of the talar fornix. This is consistent with a type I cystic lesion. SPECT/CT fusion images (b,d) show that the area of tracer concentration in the talar fornix corresponds to the cystic area and the surrounding sclerotic bone