title: ["Mouse" in Baker's cyst].
abstract: Calcified bodies may arise in a joint due to trauma, arthropathy resulting in joint destruction or synovial osteochondromatosis. These calcified loose bodies may pass into a popliteal cyst though posterior joint-bursal communications, or can arise in a popliteal cyst de novo on account of chondrometaplasia. A case history illustrates the differential diagnostic considerations. X-ray combined with ultrasound investigation will exclude soft tissue tumors and vascular lesions.
authors.affiliation: Ortopaedkirurgisk afdeling og patologisk afdeling, Bispebjerg Hospital, København.
authors.forename: T
authors.initials: T
authors.lastname: Bjerno
authors.forename: F E
authors.initials: FE
authors.lastname: Warburg
authors.forename: L N
authors.initials: LN
authors.lastname: Jørgensen
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007594:Joint Loose Bodies / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D008875:Middle Aged; D011151:Popliteal Cyst / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014463:Ultrasonography
vernacular_title: Mus i Baker-cyste.