Resumo

RIVAS, L; MURUBE, J; RIVAS, A  e  SHALABY, O. The contribution of impression cytology towards the diagnosis of cicatricial ocular pemphigoid in its primary stages. Arch Soc Esp Oftalmol [online]. 2004, vol.79, n.2, pp.67-74. ISSN 0365-6691.

Purpose: To study the conjunctival epithelium by means of impression cytology in the cicatricial ocular pemphigoid (COP) in search of a possible relation between the degree of squamous metaplasia and clinical severity of the disease, in order to facilitate the earliest possible diagnosis. Methods: Impression cytology specimens were collected from 20 patients with varying degrees of active COP. A clinical ophthalmologic examination was performed by biomicroscopy, impression cytology, conjunctival biopsy, study of direct (IFd) and of indirect immunofluorescence (IFi). Results: Patients with COP grade I had a normal distribution of non-secretory epithelial cells with a decrease in goblet cell density of around 85% compared to control and mucin content was decrease. Patients with grade II showed a slight degree of squamous metaplasia. Goblet cell density decreased by around 95% and mucin content was scarce. Patients with clinical grade III had a moderate degree of squamous metaplasia in non-secretory cells whilst goblet cell density decreased by around 99%; mucin content was almost zero. Patients with clinical grade IV showed a moderate to severe degree of squamous metaplasia in non-secretory cells; there was a total absence of goblet cells. Conclusions: Conjunctival impression cytology in COP showed a significant decrease in goblet cells from the early stages of disease without significant alterations in non-secretory epithelial cells. In patients with negative IFd impression cytology could enable the identification of a possible COP.

Palavras-chave : Cicatricial ocular pemphigoid; squamous metaplasia; impression cytology; direct immunofluorescence.