Syracuse Hemoglobinopathy Presenting With Tophaceous Gout: A Case Report.

Abstract

Hemoglobinopathies are inherited disorders of hemoglobin that alter oxygen binding capacity by affecting the production of a specific subset of globin chains or their entire structure. A lesser-known subtype, Syracuse hemoglobinopathy, was first identified in 4 generations of a family in the 1970s. Gout has been reported in several forms of hemoglobinopathy, such as thalassemia and hemoglobin C disorder. A 44-year-old man with a known history of Syracuse hemoglobinopathy, tobacco use disorder, and shoulder osteoarthritis presented with diffuse nodular masses on his joints along with joint pain. His laboratory tests and imaging showed elevated uric acid, urate crystals in his synovial fluid, and bony erosions. These findings were concerning for gout, which was treated with allopurinol, prednisone, and colchicine, resulting in improvement in his symptoms. Syracuse hemoglobinopathy, a rare disorder of high oxygen affinity hemoglobin, can present itself with findings of elevated serum uric acid and tophaceous gout. Most patients with hyperuricemia never go on to develop gout. However, having a condition that increases serum levels of uric acid should raise an astute clinician's suspicion when a patient presents with a history of hemoglobinopathy and joint pain.