Ryan Braun MD, Presenter: Nothing to Disclose

Abraham Haimed, Abstract Co-Author: Nothing to Disclose

Glenn Erski MD, Abstract Co-Author: Nothing to Disclose

Atabak Allaei MD, Abstract Co-Author: Nothing to Disclose

Srinivas Kolla MD, Abstract Co-Author: Nothing to Disclose

Scott Alan Lehto MD, Abstract Co-Author: Nothing to Disclose

Musculoskeletal imaging is a “species” of radiology well known for its varied and diverse eponymous findings and classification schemes. While many of these eponyms are related to the physician who first characterized the pathology on imaging, a subset of descriptions based upon an animal or part of an animal that the finding resembles, continue to thrive in modern interpretation. This presentation will provide a biographical background on the animal descriptors, a comparison of the classic imaging finding to its namesake and a discussion of the clinical importance of each finding.

Many eponymous animal findings related to musculoskeletal imaging are presented on radiograph, CT and/or MRI. Biographical background, illustrative images and the pathophysiology behind the image characteristics accompany each eponym. The animalistic signs to be discussed include: Head and Neck     Leontiasis Ossea (Fibrous Dysplasia of the Facial Bone) Spine     Fishmouth Vertebra     Vertebral Scalloping     Winking Owl (vertebral metastases)     Butterfly Vertebra     Butterfly Fracture     Scotty Dog (visualization of normal vertebral anatomy) Extremities     Fishtail Deformity of the Elbow     Gull Wing (erosive osteoarthritis)     Swan Neck Deformity (rheumatoid arthritis)     Talar Beaking      Anteater Nose (calcaneonavicular coalition)

http://abstract.rsna.org/uploads/2014/14006303/14006303_73ho.pdf

Braun, R, Haimed, A, Erski, G, Allaei, A, Kolla, S, Lehto, S, Lions and Tigers and Bears, Oh My!: The Zoo of Signs in Musculoskeletal Radiology.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14006303.html