title: Imaging of tumors and tumor-like lesions of the knee.
abstract: Tumors and tumor-like lesions of the knee are common conditions. Because the synovial membrane covers a large part of the knee, tumors and tumor-like lesions of the knee are mostly synovial. Magnetic resonance imaging (MRI) plays a major role in the assessment and characterization of these lesions. However, the diagnostic approach of these lesions must be performed systematically. First, the lesion must be precisely located, and then the anatomical structure involved must be determined. Finally, clinical background that includes the age of the patient, frequency of the disease and, if any, associated signs as well as MRI characteristics must be analyzed. In this review, we describe the anatomy of the knee and its compartments and provide a description of the main tumors and tumor-like lesions of the knee. We present a diagnostic approach based on the location within the knee of the lesions and the anatomical structures involved.
authors.affiliation: EA 2415, Department of medical imaging, University Hospital of Nîmes, 4, rue du Professeur-Robert-Debré, 30029 Nîmes, France. Electronic address: ahmed.larbi@chu-nimes.fr.
authors.forename: A
authors.initials: A
authors.lastname: Larbi
authors.affiliation: EA 2415, Department of medical imaging, University Hospital of Nîmes, 4, rue du Professeur-Robert-Debré, 30029 Nîmes, France.
authors.forename: P
authors.initials: P
authors.lastname: Viala
authors.affiliation: Department of osteoarticular radiology, University Hospital Lapeyronie, 371, avenue du Doyen-Gaston-Giraud, 34295 Montpellier cedex 5, France.
authors.forename: C
authors.initials: C
authors.lastname: Cyteval
authors.affiliation: EA 2415, Department of medical imaging, University Hospital of Nîmes, 4, rue du Professeur-Robert-Debré, 30029 Nîmes, France.
authors.forename: F
authors.initials: F
authors.lastname: Snene
authors.affiliation: EA 2415, Department of medical imaging, University Hospital of Nîmes, 4, rue du Professeur-Robert-Debré, 30029 Nîmes, France.
authors.forename: J
authors.initials: J
authors.lastname: Greffier
authors.affiliation: Radiology and medical imaging, University Hospital of Toulouse, Hôpital Pierre-Paul-Riquet, place du Docteur-Baylac, TSA 40031, 31059 Toulouse cedex 9, France.
authors.forename: M
authors.initials: M
authors.lastname: Faruch
authors.affiliation: EA 2415, Department of medical imaging, University Hospital of Nîmes, 4, rue du Professeur-Robert-Debré, 30029 Nîmes, France.
authors.forename: J-P
authors.initials: JP
authors.lastname: Beregi
mesh_terms: D015838:Chondromatosis, Synovial / Q000000981:diagnostic imaging; D003560:Cysts / Q000000981:diagnostic imaging; D006391:Hemangioma / Q000000981:diagnostic imaging; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging*; D008067:Lipoma / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D013584:Sarcoma, Synovial / Q000000981:diagnostic imaging; D013583:Synovial Membrane / Q000000981:diagnostic imaging / Q000473:pathology; D013586:Synovitis, Pigmented Villonodular / Q000000981:diagnostic imaging
keywords: Knee; MRI; Synovium; Tumor; Tumor-like lesion