Introducción: desde 1929, la citología por impronta tiene un gran valor en la consulta transoperatoria como complemento diagnóstico y, en algunos casos, como método aftemo.
Métodos: en un periodo de dos años, en el Servicio de Anatomía Patológica y Citopatología del Hospital Universitario 'Dr. José Eleuterio González', a 416 especímenes para biopsia transoperatoria se les realizó impronta citológlca o cortes por congelación. Se registraron los diagnósticos y se compararon con el diagnóstico final emitido con el análisis histológico definitivo. Se obtuvo la p estadística.
Resultados: nueve de los 416 especímenes (2.2 %) fueron diagnosticados en forma errónea por citología, y ocho de 364 (2.1 %) por congelación. La certeza diagnóstica para las improntas y para tos cortes por congelación fue de 97.8 y 97.9 %. Seis de los 416 casos (1.4 %) tuvieron diagnóstico equivocado; la certeza diagnóstica fue de 98.5 % con ambos métodos.
Conclusiones: la citología transoperatoria es rápida, fácil de realizar y de bajo costo; aporta detalles morfológicos sobre células intactas y sin los artificios secundarios al enfriamiento. Utilizada conjuntamente con los cortes por congelación es de gran valor.
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