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Chai JW, Hong SH, Choi JY et al. Radiologic diagnosis of osteoid osteoma: from simple to challenging findings. Radiographics. 2010; 30 (3): 737-749.

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Article

The "Penumbra Sign" on Magnetic Resonance Images of Brodie's Abscess: A Case Report and Literature Review

1Department of Radiology, University of Maiduguri Teaching Hospital, Maiduguri, Borno State, Nigeria

2Department of Radiology, Usmanu Danfodio University Teaching Hospital, Sokoto, Sokoto State, Nigeria


American Journal of Medical Case Reports. 2017, Vol. 5 No. 8, 199-201
DOI: 10.12691/ajmcr-5-8-1
Copyright © 2017 Science and Education Publishing

Cite this paper:
Farate A, Yunusa GH, Umar UH, Ahmadu MS, Mustapha Z, Ahidjo A. The "Penumbra Sign" on Magnetic Resonance Images of Brodie's Abscess: A Case Report and Literature Review. American Journal of Medical Case Reports. 2017; 5(8):199-201. doi: 10.12691/ajmcr-5-8-1.

Correspondence to: Farate  A, Department of Radiology, University of Maiduguri Teaching Hospital, Maiduguri, Borno State, Nigeria. Email: abu.farati@gmail.com

Abstract

This report presents the "penumbra sign" of Brodie's abscess in a 17-year-old boy. The lesion was located in the proximal metaphysis of the left tibia. Histologic and microbiologic confirmation of the diagnosis was made. A "penumbra sign" on non-contrast enhanced T1-weighted magnetic resonance images is a helpful diagnostic sign of Brodie's abscess.

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