title: An intra-articular ganglion cyst in a patient with juvenile idiopathic arthritis.
abstract: We report an intra-articular ganglion cyst (IAGC) presenting as knee pain and a mass in a patient with longstanding Juvenile Idiopathic Arthritis (JIA). We could not find a similar case of an IAGC occurring in the knee of JIA patients in the literature. IAGC may need to be included as a possibility in patients with inflammatory arthritis with new-onset knee pain, especially in those with a palpable mass. MRI was useful in distinguishing IAGC from more worrisome causes of a knee mass. Orthopedic input was helpful in diagnosis and treatment. In addition, methotrexate therapy was effective in bringing about a long-lasting remission.
authors.affiliation: Department of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii.
authors.forename: Donna Y
authors.initials: DY
authors.lastname: Deng
authors.affiliation: Department of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii.
authors.forename: Keolamau
authors.initials: K
authors.lastname: Yee
authors.affiliation: Department of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii.
authors.forename: William
authors.initials: W
authors.lastname: Burkhalter
authors.affiliation: Department of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii.
authors.forename: Kelley Chinen
authors.initials: KC
authors.lastname: Okimoto
authors.affiliation: Department of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii.
authors.forename: Kevin
authors.initials: K
authors.lastname: Kon
authors.affiliation: Department of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii.
authors.forename: David K
authors.initials: DK
authors.lastname: Kurahara
mesh_terms: D000293:Adolescent; D018501:Antirheumatic Agents / Q000008:administration & dosage; D018771:Arthralgia / Q000209:etiology; D001171:Arthritis, Juvenile / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy; D005260:Female; D045888:Ganglion Cysts / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D007719:Knee Joint / Q000473:pathology / Q000503:physiopathology; D008279:Magnetic Resonance Imaging; D008727:Methotrexate / Q000008:administration & dosage*; D016059:Range of Motion, Articular; D013396:Suction / Q000379:methods*; D016896:Treatment Outcome
chemical_list: D018501:Antirheumatic Agents; D008727:Methotrexate
keywords: Intra-articular ganglion cyst; Juvenile idiopathic arthritis