Prevalence of Enchondromas of the Proximal Femur in Adults as an Incidental Finding on MRI of the Pelvis

• Published in: The Indian journal of radiology & imaging Vol. 31; no. 3; pp. 582 - 585
• Main Authors: Davies, A. M., Patel, A., Azzopardi, C., James, S. L., Botchu, R.
• Format: Journal Article
• Language: English
• Published: A-12, 2nd Floor, Sector 2, Noida-201301 UP, India Thieme Medical and Scientific Publishers Pvt. Ltd 01.07.2021
• Subjects: enchondroma; mri; Original; Original Article; proximal femur; proximal femur; enchondroma; MRI
• ISSN: 0971-3026; 0971-3026; 1998-3808
• DOI: 10.1055/s-0041-1735915

Abstract Objective  To determine the prevalence of enchondroma in adults as an incidental finding in the proximal femur on magnetic resonance imaging (MRI). Materials and Methods  A retrospective review of the MRI scans of the pelvis in a series of adult patients was conducted. All presented with nononcological musculoskeletal complaints. The site, size, and appearances of the enchondromas were identified according to criteria from previous studies. Results  A total of 1,209 proximal femora in 610 patients were reviewed and a total of 9 enchondromas were identified. These ranged from 0.6 to 2.5 cm in length (mean 1.3 cm). None showed aggressive features suggestive of malignancy. Three cases (33%) underwent follow-up MRI scans which showed no change in size or morphology. Conclusion  The prevalence on MRI of incidental enchondromas arising in the proximal femur is 0.7%. This is three to four times less common than seen in the proximal humerus and around the knee.