Correlación entre especies del género Demodex en chalaziones primarios y recurrentes / Correlation between Demodex species in primary and recurrent chalazia

Objetivo: Determinar la correlación entre la infestación por especies de Demodex y la ocurrencia de chalaziones primarios y recurrentes. Métodos: Estudio prospectivo y observacional. Se incluyeron pacientes con chalaziones primarios o recurrentes. Se tomó muestra de pestañas para determinar la presencia microscópica de Demodex spp. Se determinó la correlación entre la recurrencia del chalazión y la infestación por ácaros Demodex spp. mediante la prueba del coeficiente de correlación de rangos de Spearman. Resultados: Se incluyeron 68 pacientes adultos con diagnóstico de chalazión. En 63,2% del total de los casos se documentó la presencia de uno o más parásitos del género Demodex spp. En el estudio parasitológico cuantitativo se encontró que el 25% de todos los casos presentó infestación por Demodex spp. definida por un índice superior o igual a 0,5 parásitos por pestaña. La especie más frecuentemente encontrada fue Demodex folliculorum. De los 14 pacientes con chalazión recurrente el 50% presentó infestación por Demodex spp. y en el 91,7% de los casos la infestación fue por Demodex folliculorum. Existe una correlación positiva y directamente proporcional de (rø=+0,665; p<0,05) entre estos factores. De los pacientes con chalazión primario, solo 18,5% presentaron infestación por Demodex spp., y en el 81,6% de ellos fue causada por Demodex folliculorum. No existe una correlación significativa entre estos factores. Conclusión: Existe una correlación directa, alta y estadísticamente significativa entre la recurrencia del chalazión y la infestación por Demodex spp., no existe una correlación estadísticamente significativa entre los chalaziones primarios y la presencia de Demodex spp.(AU)

Objective: To determine the correlation between the infestation by species of Demodex spp. and the occurrence of primary and recurrent chalazia. Methods: Prospective and observational study. Patients with primary or recurrent chalazia were included. Eyelash samples were taken to determine the microscopic presence of Demodex spp. The correlation between the recurrence of the chalazia and the infestation by Demodex spp. mites was determined using Spearman's rank correlation coefficient test. Results: Sixty-eight adult patients diagnosed with chalazia were included. In 63.2% of the total cases, the presence of one or more parasites of the genus Demodex spp. was documented. In the quantitative parasitological study, it was found that 25% of all cases presented infestation by Demodex spp. defined by an index greater than or equal to 0.5 parasites per eyelash. The most frequently found species was Demodex folliculorum. Of the 14 patients with recurrent chalazia, 50% presented infestation by Demodex spp. and in 91.7% of the cases the infestation was by D. folliculorum. There is a positive, directly proportional correlation between these factors (rθ=+0.665, P<.05). In the group of patients with primary chalazion, only 18.5% presented infestation by Demodex spp., and in 81.6% of these cases it was caused by D. folliculorum. There is a non-statistically significant correlation between these two factors. Conclusion: There is a direct, high and statistically significant correlation between the recurrence of the chalazion and the infestation by Demodex spp., there is no statistically significant correlation between the primary chalazia and the presence of Demodex spp.(AU)

Correlation between Demodex species in primary and recurrent chalazia.

OBJECTIVE: To determine the correlation between the infestation by species of Demodex spp. and the occurrence of primary and recurrent chalazia. METHODS: Prospective and observational study. Patients with primary or recurrent chalazia were included. Eyelash samples were taken to determine the microscopic presence of Demodex spp. The correlation between the recurrence of the chalazia and the infestation by Demodex spp. mites was determined using Spearman's rank correlation coefficient test. RESULTS: Sixty-eight adult patients diagnosed with chalazia were included. In 63.2% of the total cases, the presence of one or more parasites of the genus Demodex spp. was documented. In the quantitative parasitological study, it was found that 25% of all cases presented infestation by Demodex spp. defined by an index greater than or equal to 0.5 parasites per eyelash. The most frequently found species was Demodex folliculorum. Of the 14 patients with recurrent chalazia, 50% presented infestation by Demodex spp. and in 91.7% of the cases the infestation was by D. folliculorum. There is a positive, directly proportional correlation between these factors (rθ=+0.665, P<.05). In the group of patients with primary chalazion, only 18.5% presented infestation by Demodex spp., and in 81.6% of these cases it was caused by D. folliculorum. There is a non-statistically significant correlation between these two factors. CONCLUSION: There is a direct, high and statistically significant correlation between the recurrence of the chalazion and the infestation by Demodex spp., there is no statistically significant correlation between the primary chalazia and the presence of Demodex spp.

Carcinoma epidermoide de conjuntiva en un adulto mayor / Epidermoid carcinoma of conjunctiva in an elderly

Se presenta el caso clínico de un paciente ecuatoriano de 62 años, mestizo, con antecedente de orzuelos reiterados en el ojo izquierdo, atendido en la consulta de Oftalmología del Hospital del Tena, del Instituto Ecuatoriano de Seguridad Social de Ecuador, por presentar desde hacía 8 meses molestias en ese mismo ojo y presencia de una lesión en el párpado inferior que sangraba con facilidad, acompañado de dificultad al cierre palpebral, por lo cual se le realizó una resección quirúrgica de la lesión con biopsia incluida, cuyo resultado confirmó el diagnóstico de carcinoma epidermoide de la conjuntiva

The case report of a 62 years mixed race Ecuadorian patient, is presented with a history of repeated sties in the left eye, assisted in the Ophthalmology Service of Tena Hospital in the Social Security Ecuadorian Institute of Ecuador, due to discomfort in that same eye during 8 months and an injury in the lower lid with easy bleeding, accompanied by difficulty to the palpebral closing , reason why a surgical resection of the injury was carried out with biopsy which result confirmed the diagnosis of epidermoid carcinoma of the conjunctiva

Carcinoma epidermoide de conjuntiva en un adulto mayor / Epidermoid carcinoma of conjunctiva in an elderly

Se presenta el caso clínico de un paciente ecuatoriano de 62 años, mestizo, con antecedente de orzuelos reiterados en el ojo izquierdo, atendido en la consulta de Oftalmología del Hospital del Tena, del Instituto Ecuatoriano de Seguridad Social de Ecuador, por presentar desde hacía 8 meses molestias en ese mismo ojo y presencia de una lesión en el párpado inferior que sangraba con facilidad, acompañado de dificultad al cierre palpebral, por lo cual se le realizó una resección quirúrgica de la lesión con biopsia incluida, cuyo resultado confirmó el diagnóstico de carcinoma epidermoide de la conjuntiva.

The case report of a 62 years mixed race Ecuadorian patient, is presented with a history of repeated sties in the left eye, assisted in the Ophthalmology Service of Tena Hospital in the Social Security Ecuadorian Institute of Ecuador, due to discomfort in that same eye during 8 months and an injury in the lower lid with easy bleeding, accompanied by difficulty to the palpebral closing , reason why a surgical resection of the injury was carried out with biopsy which result confirmed the diagnosis of epidermoid carcinoma of the conjunctiva(AU)