SUMMARY Objective: The aim of this study was to evaluate the expression of endoglin and its correlation with histopathological and clinical findings in conjunctival nevi. Methods: The study included archival formalin-fixed, paraffin-embedded tissue sections of 44 patients with conjunctival nevi. Immunohistochemical staining for CD105 had been performed with monoclonal mouse antihuman CD105 antibodies. The intratumoral microvessel density for quantification of tumoral vascularization had been determined by this marker. Results: The expression of CD105 was positive in 30 (68.2%) cases. There was a statistically significant difference in the level of CD105 expression regarding the histological type of nevus (p=0.03) and intralesional cysts status (p=0.02). Spearman's rho (ρ −0.316) revealed a significant negative correlation between the expression of endoglin and the histological type of nevus (p=0.03) and between the expression of endoglin and the presence of intralesional cysts (ρ −0.380, p=0.01). Conclusion: This study suggests that endoglin could be a useful diagnostic and prognostic marker in differentiating between benign and malignant melanocytic ocular lesions.

A incidência de todas as formas de tuberculose cutânea, incluindo o lúpus vulgar (a forma mais comum) diminuiu progressivamente nos países desenvolvidos durante o século XX e esta mudança foi atribuída a melhores condições de vida e uso de terapia específica. Apesar da diminuição da TBC cutânea, alguns casos ainda são detectados hoje em dia e o diagnóstico acurado e o tratamento apropriado são fundamentais para os doentes e a saúde pública. A TBC cutânea quando prolongada, diagnosticada erroneamente ou não tratada pode levar a diferentes neoplasias. Este é o relato de um caso de lúpus vulgar na pele do rosto de uma paciente do sexo masculino, agricultor, de 74 anos de idade. Durante a terapia antituberculosa ele desenvolveu um tumor na pele da testa, histologicamente confirmado como carcinoma de células escamosas

The incidence of all forms of cutaneous tuberculosis, including lupus vulgaris (the most common form) decreased progressively in developed countries during the twentieth century, this change being attributed to improved living standards and specific therapy. Despite the decrease in cutaneous tuberculosis, some cases are still found and correct diagnosis and management are fundamental, both for the patients and for public health. Long lasting, misdiagnosed or untreated cutaneous tuberculosis may lead to different forms of cancer. This case report involves a 74-year old male farmer with lupus vulgaris on his face. During anti-tuberculosis treatment he developed a tumor on his forehead, which was histologically confirmed as a squamous cell carcinoma