MR imaging of the knee: incidental osseous lesions.
The knee joint remains the articulation most frequently assessed by MR imaging, and osseous tumor and tumor-like lesions are not uncommon incidental imaging findings. This article reviews the most commonly encountered incidental lesions, emphasizing the characteristic MR imaging features. It is intended not as a complete review of the imaging findings associated with these lesions but as a summary, highlighting the MR imaging features that are most useful in suggesting a specific diagnosis. The authors organize incidental lesions into the following broad categories: cartilaginous, fibro-osseous, and degenerative. They do not address those lesions that are typically symptomatic and, as a result, likely to be directly related to the patients' clinical presentation and subsequent imaging.
Kransdorf
Mark J
MJ
Mayo Clinic College of Medicine, Rochester, MN, USA. kransdorf.mark@mayo.edu
Peterson
Jeffrey J
JJ
Bancroft
Laura W
LW
D002812:Chondroma / Q000175:diagnosis; D005350:Fibroma / Q000175:diagnosis; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis*; D007717:Knee / Q000000981:diagnostic imaging; D008067:Lipoma / Q000175:diagnosis; D008279:Magnetic Resonance Imaging; D015831:Osteochondroma / Q000175:diagnosis; D011859:Radiography