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    Transformation of Conjuntival intraepithelial neoplasia into Squamous Cell Carcinoma despite topical treatment with Interferon 伪2b

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    Presentamos el caso de una mujer de 69 a帽os de edad que acude por aparici贸n de una tumoraci贸n en ojo derecho (OD) de 3 meses de evoluci贸n. En la exploraci贸n se observ贸 una lesi贸n en conjuntiva nasal de 3x8mm. El estudio de citolog铆a por impresi贸n de la lesi贸n, mostr贸 una neoplasia intraepitelial conjuntival (CIN). Se inici贸 tratamiento con interfer贸n 伪2B t贸pico (IFN-伪2b) 1 MUI/ml. A pesar de una disminuci贸n inicial de su tama帽o (2x5mm), posteriormente se observ贸 un nuevo crecimiento, por lo que se decidi贸 tratamiento quir煤rgico. El estudio histopatol贸gico de la lesi贸n confirm贸 el diagn贸stico de carcinoma de c茅lulas escamosas (CCE) moderadamente diferenciado con m谩rgenes afectos. El tratamiento de la CIN con IFN-伪2b ha impuesto como tratamiento de elecci贸n frente a la resecci贸n quir煤rgica, dados los buenos resultados obtenidos, escasa recurrencia y pocos.Clinical case: A 69 year old woman presented with a conjunctival mass in her right eye (OD) for the previous 3 months. It was observed a mass of 3x8mm involving the nasal conjunctiva. Citolology study was performed showing a conjunctival intraepithelial neoplasia (NIC). Initially the lesion decreased in size (2x5mm) after topical interferon 伪2b (IFN-伪2b) 1 MUI/ml treatment was prescribed. However, 6 months later, a new growth of the NIC was observed, so we decided surgical treatment. Histopathological study confirmed the diagnosis of conjunctival squamous cell carcinoma (SCC). Conclusions : Treatment with IFN-伪2b is being preferred to surgical excision for NIC, due to its good results obtained, low recurrence and its few adverse effects. However, ineffective cases and progression to SCC of conjunctiva have been reported
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