title: Giant solitary synovial chondromatosis.
abstract: The purpose of this report is to describe giant solitary synovial chondromatosis, a previously unrecognized feature of synovial chondromatosis that may histologically and radiographically mimic a malignant neoplasm. Giant solitary synovial chondroma is an intra- and/or extraarticular lesion measuring over 1 cm in size and sometimes as large as 20 cm. The radiographic appearance is that of a large, well-marginated mass either of irregular feathery calcification from coalescence of multiple small synovial chondromas, or a rounded calcified mass from the growth of a single synovial chondroma. Radiographically, giant solitary synovial chondromatosis may appear similar to chondrosarcoma and parosteal osteosarcoma.
authors.affiliation: Department of Diagnostic Radiology, University of Texas, M.D. Anderson Cancer Center, Houston 77030.
authors.forename: J
authors.initials: J
authors.lastname: Edeiken
authors.forename: B S
authors.initials: BS
authors.lastname: Edeiken
authors.forename: A G
authors.initials: AG
authors.lastname: Ayala
authors.forename: A K
authors.initials: AK
authors.lastname: Raymond
authors.forename: J A
authors.initials: JA
authors.lastname: Murray
authors.forename: S Q
authors.initials: SQ
authors.lastname: Guo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015838:Chondromatosis, Synovial / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography