Long-term persistence of fascia lata patch graft in glaucoma drainage device surgery.

PURPOSE: Conjunctival erosion in glaucoma drainage device surgery can be prevented by the use of patch grafts to cover the extraocular portion of the tube. Several materials can be used, among them human preserved fascia lata. METHODS: The authors present a case of a failed Ahmed glaucoma valve due to encapsulation of the bleb, in which the fascia lata patch placed to cover the tube was removed 32 months later, during the implantation of a second glaucoma drainage device. RESULTS: Histopathologic examination of the fascia lata patch demonstrated its persistence, without degradation or cellular infiltration. CONCLUSIONS: Human preserved fascia lata is a suitable material for tube covering in glaucoma drainage device surgery, with long-term survival.

Long-term persistence of fascia lata patch graft in glaucoma drainage device surgery.

PURPOSE: Conjunctival erosion in glaucoma drainage device surgery can be prevented by the use of patch grafts to cover the extraocular portion of the tube. Several materials can be used, among them human preserved fascia lata. METHODS: The authors present a case of a failed Ahmed glaucoma valve due to encapsulation of the bleb, in which the fascia lata patch placed to cover the tube was removed 32 months later, during the implantation of a second glaucoma drainage device. RESULTS: Histopathologic examination of the fascia lata patch demonstrated its persistence, without degradation or cellular infiltration. CONCLUSIONS: Human preserved fascia lata is a suitable material for tube covering in glaucoma drainage device surgery, with long-term survival.

Eyelid verrucous carcinoma.

PURPOSE: To report a case of verrucous carcinoma (VC) that presented as an eyelid mass on the right eye. CASE REPORT: A 66-year-old man developed a slow-growing eyelid lesion on the lateral canthus of the right eye. The tumor was firm, well-defined, sessile, acuminate, and exuded foul-smelling fluid. RESULTS: Excisional biopsy revealed a VC. The patient remains asymptomatic. CONCLUSIONS: VCs are extremely rare eyelid tumors. This clinicopathological entity is a low-grade variant of squamous cell carcinoma that occurs mainly in the intraoral, genitogluteal, and plantar areas. A role of human papillomavirus (HPV) in these tumors has been recently identified. VCs characteristically show locally aggresive growth. This is the second case reported in the literature on the eyelid. VC should be considered in the differential diagnosis of eyelid tumors.

[Benign hair-follicle derived eyelids tumors in adults]. / Tumores palpebrales benignos derivados de los folículos pilosos en adultos.

PURPOSE: Benign eyelid neoplasms derived from hair follicles are frequently misdiagnosed, including pilomatricoma, trichoepithelioma, trichilemmoma, trichoblastoma and inverted follicular keratosis. METHODS: We reviewed 17 tumors seen in the last 9 years, between 1992 and 2002. Excisional biopsy constituted the treatment in all cases. RESULTS: The mean age was 44.5 years (range 13-80 years). Ten were women and 7 men. Pilomatricoma and trichoepithelioma accounted for 76.5% of all neoplasms. All trichoepitheliomas were found as solitary tumors and no patient had a history of familial trichoepithelioma. The remaining neoplasms (23.5%) were trichilemmomas, trichoblastoma and inverted follicular keratosis. No patient recurred locally and there were no malignant transformations after a mean follow-up of 3.1 years. The most frequent hair follicle neoplasms in our series was pilomatricoma (9 cases). CONCLUSIONS: Benign hair follicle neoplasms are rare in the eyelid. Most can simulate a basal cell carcinoma when evaluation is based on clinical evidence alone, and only the pilomatricoma may resemble a benign neoplasm. Thereby they must be excised with free surgical margins. All excised eyelid lesions should be sumitted for histopathologic examination because it is not possible to obtain 100% accuracy in diagnosing eyelid tumors.

Tumores palpebrales benignos derivados de los folículos pilosos en adultos / Benign hair-follicle derived eyelids tumors in adults

Objetivo: Los tumores palpebrales benignos que derivan de los folículos pilosos con frecuencia son mal diagnosticados clínicamente. Este grupo incluye el pilomatricoma, el tricoepitelioma, el tricolemoma, el tricoblastoma y la queratosis folicular invertida. Métodos: Revisamos 17 tumores de este tipo, que hemos tratado entre 1992 y 2000. Su excisión quirúrgica fue su tratamiento en todos los casos. Resultados: La edad media fue de 44,5 años (rango 13-80 años). Diez fueron mujeres y 7 hombres. Los pilomatricomas y los tricoepiteliomas constituyeron el 76,5 por ciento del total de este tipo de tumores. Todos los tricoepiteliomas se presentaron de forma aislada y sin antecedentes familiares. El resto (23,5 por ciento) fueron tricolemomas, un tricoblastoma y una queratosis folicular invertida. Ninguno tuvo recurrencia local y por tanto ninguno hizo una transformación maligna tras una media de 3,1 años de seguimiento. El más frecuente de este tipo de tumores en nuestra serie fue el pilomatricoma (9 liomas se presentaron de forma aislada y sin antecedentes familiares. El resto (23,5 por ciento) fueron tricolemomas, un tricoblastoma y una queratosis folicular invertida. Ninguno tuvo recurrencia local y por tanto ninguno hizo una transformación maligna tras una media de 3,1 años de seguimiento. El más frecuente de este tipo de tumores en nuestra serie fue el pilomatricoma (9 casos).Conclusiones: Los tumores benignos palpebrales derivados de los folículos pilosos son infrecuentes. Pueden ser confundidos con un carcinoma de células basales cuando nos basamos sólo en la exploración clínica y únicamente los pilomatricomas pueden semejar una lesión benigna. Deben ser reseca casos).Conclusiones: Los tumores benignos palpebrales derivados de los folículos pilosos son infrecuentes. Pueden ser confundidos con un carcinoma de células basales cuando nos basamos sólo en la exploración clínica y únicamente los pilomatricomas pueden semejar una lesión benigna. Deben ser resecados con márgenes de seguridad, y todas las lesiones deben ser estudiadas histopatológicamente para confirmar el diagnóstico, ya que es imposible obtener un 100 por ciento de correlación clínico-patológica en el diagnóstico de los tumores palpebrales (AU)