Unilateral giant cell lesion of the jaw in Noonan syndrome

Autor: M Eyselbergs, F Vanhoenacker, J Hintjens, M Dom, K Devriendt, H Van Dijck
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Journal of the Belgian Society of Radiology, Vol 97, Iss 2, Pp 90-93 (2014)
Druh dokumentu: article
ISSN: 2514-8281
DOI: 10.5334/jbr-btr.20
Popis: Noonan syndrome (NS) is an etiologically heterogeneous disorder caused by mutations in the RAS-MAPK signaling pathway. Noonan-Like/Multiple Giant Cell Lesion (NL/MGCL) syndrome is initially described as the occurrence of multiple gnathic giant cell lesions in patients with phenotypic features of NS. Nowadays, NS/MGCL syndrome is considered a variant of the NS spectrum rather than a distinct entity. We report the case of a 14-year-old female patient carrying a 'SOS1 'mutation with a unilateral giant cell lesion of the right mandible. Cross-sectional imaging such as CT and MRI are not specific for the diagnosis of oral giant cell lesions. Nonetheless, intralesional scattered foci of low SI on T2-WI, corresponding to hemosiderin deposits due to hemorrhage, can help the radiologist in narrowing down the differential diagnosis of gnathic lesions in patients with NS.
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