Two cases of pediatric bone disease (eosinophilic granuloma and Brodie's abscess) showing similar scintigraphic and radiographic findings

Two 9-year-old patients with femoral bone lesions were referred to the auth ors' institution within a few days of each other. Both showed similar radio graphic, magnetic resonance imaging, and scintigraphic findings. The radiog raphs showed osteolytic lesions in the right femoral diaphyses, and gadolin ium-DTPA-enhanced magnetic resonance imaging revealed inhomogeneous enhance ment. Tc-99m HMDP showed marked linear accumulation with relatively low cen tral uptake in the right femoral shafts, and TI-201 scintigraphy showed con siderable uptake corresponding to the area seen with Tc-99m HMDP. Histologi c analysis confirmed eosinophilic granuloma in the first patient and Brodie 's abscess in the second. The radiographic and scintigraphic findings in Br odie's abscess may be similar to those in eosinophilic granuloma.