Abstract
BackgroundMany normal variants of bones on plain radiographs have been reported.Case presentationIn the current report, a 14-year-old Asian girl noticed an occasional slight elbow pain. She had no traumatic episode. Plain radiographs showed a well-defined osteolytic lesion with a sclerotic rim, which was continuous with the normal subarticular bone in the distal humerus. Magnetic resonance imaging revealed that the defect area seen on the plain radiograph showed low-signal to iso-signal intensity on T1-weighted images and slightly high-signal intensity on T2-weighted fat suppression images. Bone edema was not observed. The association between her elbow pain and the lesion was not conclusive.ConclusionsThe findings from the images suggested that the lesion was a normal variant rather than osteochondritis dissecans or a neoplastic lesion, and possibly an anatomical counterpart of a dorsal defect of the patella.
Highlights
Many normal variants of bones on plain radiographs have been reported
Normal skeletal variants identified from plain radiographs have been listed in the well-known book Atlas of Normal Roentgen Variants That May Simulate Disease [1]
A distal defect of the humerus is a normal variant, and the discussion about the current case was made in light of a dorsal defect of the patella [2]
Summary
Many normal variants of bones on plain radiographs have been reported. Case presentation: In the current report, a 14-year-old Asian girl noticed an occasional slight elbow pain. The current report describes a characteristic osteolytic lesion with a clear osteosclerotic rim at the distal humerus. A distal defect of the humerus is a normal variant, and the discussion about the current case was made in light of a dorsal defect of the patella [2]. Plain radiographs showed a welldefined osteolytic lesion with an osteosclerotic rim in the distal humerus.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
