ERDHEIM-CHESTER DISEASE DETECTED WITH (TC)-T-99M MDP BONE SPECT/CT

Erdheim-Chester disease (ECD) is a rare non-Langerhans' cell histiocytosis. Mild but permanent juxta-articular bone pain in mainly knees and ankles is the most frequent associated symptom. Despite the pathognomonic radiographic findings, most cases are still diagnosed by the pathologist. The lesions consist of lipid-storing CD 68 +/ CD 1a - non-Langerhans' cell histiocytes, most frequently localized in bone but also involving multiple organ systems in the body. We present a case report in which the diagnosis of ECD was established with Tc-99m MDP bone SPECT/CT.

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