Clinical and Radiological Features of Intramuscular Orbital Amyloidosis: A Case Series and Literature Review.

Published on Sep 8, 2021in Ophthalmic Plastic and Reconstructive Surgery1.746
· DOI :10.1097/IOP.0000000000002061
Jessica Y. Tong (RNSH: Royal North Shore Hospital), Valerie Juniat2
Estimated H-index: 2
+ 4 AuthorsDinesh Selva63
Estimated H-index: 63
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Abstract
PURPOSE Orbital amyloidosis of the extraocular muscles (EOMs) is a rare condition, and its clinicoradiological features are not well elucidated. This study describes the characteristic clinical signs, MRI features, and potential treatment options. METHODS Retrospective multicenter case series and literature review of EOM amyloidosis. RESULTS Five cases were identified for inclusion. Common clinical findings were diplopia, ophthalmoplegia, and proptosis. Systemic amyloidosis was more likely to present with multiple muscle involvement, but no particular pattern was observed with localized disease. On MRI, amyloid deposition was characterized as a heterogeneous intramuscular mass with T2 hypointensity and post contrast enhancement. Management is dependent on the extent of disease and functional impairment; options include surgical debulking and radiation therapy. CONCLUSION EOM amyloidosis is uncommon. The combination of clinical and radiologic findings described in this study should lead to its clinical suspicion.
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2015
5 Authors (Mona Mlika, ..., Faouzi El Mezni)
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