Tl-201 uptake in bone and soft tissue involvement of sarcoidosis.

The authors describe a 38-year-old man who was referred to the nuclear medicine department because of pain and swelling of his fingers in both hands. Tc-99m MDP and Tl-201 scans were performed to evaluate the lesions. A Tc-99m MDP bone scan showed hyperemia and increased uptake in the lesions. A Tl-201 scan showed marked uptake in both early and delayed images in the lesions of his fingers. Bone biopsy and histologic examination confirmed sarcoidosis. This case indicates that Tl-201 uptake can be seen in bone lesions resulting from sarcoidosis.