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Ocular perforations require an action depending on the findings observed. Additionally, the closeness of the orbit to the nasal cavity and the anterior cranial fossa requires any collateral damage in these spaces to be ruled out. The presence of a penetrating ocular injury associated with ipsilateral rhinorrhoea in which the presence of β2-transferrin -a highly specific and sensitive marker to identify cerebrospinal fluid- is detected, obliges to suspect and locate any possible leakage. A case is presented in which this unbound protein is detected in post-traumatic rhinorrhoea with an origin in the eyeball, making the diagnosis of a CSF leak into a false positive. Copyright © 2019. Publicado por Elsevier España, S.L.U.

Citation

F J García-Callejo, F Martínez Expósito, B Pallarés Martí, A Rubio Fernández, N Oishi, J R Alba García. False positive for β2-transferrin in rhinorrhoea. Ocular trauma. Archivos de la Sociedad Espanola de Oftalmologia. 2019 Dec;94(12):619-621

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PMID: 31311689

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