Radionuclide Demonstration of Relative Increased Blood Flow in Uniappendicular Secondary Hypertrophic Osteoarthropathy

摘要

A rare case of hypertrophic osteoarthropathy (HO) limited to one lower extremity is described in a male with a history of familial polyposis coli and bilateral aortofemoral grafts. The precise etiology remains unknown. Radiography depicted the HO, but99mTc-methylene diphosphonate imaging showed more extensive involvement. An intra-aortic injection of99mTc-macroaggregates of albumin portrayed a larger blood flow to the involved limb compared to the contralateral extremity. The major part of this increase was in bone rather than in the adjacent soft tissue.