title: Primary cystic arthrosis of the hip.
abstract: Subchondral cysts can mimic the radiographic features of intra-osseous ganglia or a variety of neoplastic processes. This case demonstrates the development of a massive subarticular cyst in the supra-acetabular bone. The unique pathogenesis of subchondral cysts is illustrated by the evolution of radiographic features that may be useful in planning treatment.
mesh_terms: D001845:Bone Cysts / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006621:Hip Joint; D006801:Humans; D007085:Ilium; D008875:Middle Aged; D010003:Osteoarthritis / Q000000981:diagnostic imaging; D011859:Radiography