CONCORDANCIA IMAGINOLOGICA-PATOLOGICA EN BIOPSIA CORE DE MAMA BREAST LESIONS WITHIMAGING-HISTOLOGIC CONCORDANCE DURING AUTOMATED CORE BIOPSY

El propósito de nuestro estudio fue determinar la frecuencia, concordancias y discordancias de las lesiones mamarias. Se realizaron 188 biopsias core con aguja de 14G. Sólo 1 de las 120 lesiones benignas diagnosticadas fue discordante; se recomendó escisión quirúrgica cuyo resultado definitivo demostró carcinoma in situ. Para minimizar errores diagnósticos, se requiere evaluar la correlación entre las imágenes y el resultado histológico, además de establecer la concordancia.The purpose of this study was to determine the frequency, concordance and discordance of breast lesions during automated core biopsy. A US-guided 14 -gauge automated core needle biopsy was performed on 188 lesions. Only in 1 of 120 bening diagnosed cases imaging-histologic discordance was present. This lesión underwent surgical excisión and the case was diagnosed as having carcinoma in situ, as a definitive histological diagnosis. Assessment of correlation between imaging studies and histologic findings, as well as determinaron of concordance, are required to minimize diagnostic errors

BIOPSIA ESTEREOTAXICA MAMARIA: 2 AÑOS DE EXPERIENCIA DIRECTIONAL VACUUM-ASSISTED STEREOTACTIC BREAST BIOPSY: A 2-YEAR EXPERIENCE

Introducción: La biopsia estereotáxica digital mamaria (BED), representa un excelente método para obtener diagnóstico histológico, siendo alternativa de elección frente a la cirugía en muchos casos. Objetivo: Presentar nuestra experiencia en la aplicación de la BED en el Hospital Clínico de Universidad de Chile. Material y método: Estudio descriptivo, retrospectivo de BED realizadas en el Hospital Clínico de la Universidad de Chile (marzo 2005-noviembre 2007). Se registró morfología de las lesiones, clasificación BI-RADS, informes de anatomía patológica, complicaciones y datos epidemiológicos. Resultados: Se incluyó a 79 pacientes con 95 lesiones. Edad promedio 55 años. De las 95 biopsias, 95,7% correspondieron a microcalcificaciones. La sensibilidad fue 92,8% y la especificidad 100%. El valor predictivo positivo fue 100%o y negativo 98,7%. La subestimación fue de 8% y la tasa de complicaciones 3,1%. Conclusiones: Nuestros resultados confirman las ventajas del procedimiento en nuestro Centro, demostrando la BED como altamente confiable, con buena correlación histológica y mínimas complicaciones.Introduction: Directional vacuum-assisted stereotactic breast biopsy (DVAB), represents an ex-cellent method for obtaining pathological diagnosis, being in many cases an alternative to surgery. Objec-tives: To present our 2-year experience in DVAB at the University of Chile's Clinical Hospital. Materials and methods: a descriptive retrospective study of DVAB was conducted in our Hospital from March 2005 to November 2007. Morphology of lesions, BI-RADS classification, pathology reports, complications as well as epidemiológica! data were recorded. Results: We included 79 patients with 95 lesions. Mean age 55 years. Of the 95 biopsies, 95.7% were microcal-cifications. The sensitivity was 92.8% and specificity 100%. The positive predictive valué was 100%, while negative PVwas 98.7%, with 8% of subestimation and complication rate of 3,1%. Conclusions: Our results confirm the advantages of said procedure in ourCenter, proving DVAB as highly reliable, with good histological correlation and minimal complications

Directional vacuum-assisted stereotactic breast biopsy: A 2-year experience Biopsia estereotaxica mamaria: 2 Años de experiencia

Introduction: Directional vacuum-assisted stereotactic breast biopsy (DVAB), represents an excellent method for obtaining pathological diagnosis, being in many cases an alternative to surgery. Objectives: To present our 2-year experience in DVAB at the University of Chile's Clinical Hospital. Materials and methods: a descriptive retrospective study of DVAB was conducted in our Hospital from March 2005 to November 2007. Morphology of lesions, BI-RADS classification, pathology reports, complications as well as epidemiological data were recorded. Results: We included 79 patients with 95 lesions. Mean age 55 years. Of the 95 biopsies, 95.7% were microcalcifications. The sensitivity was 92.8% and specificity 100%. The positive predictive value was 100%, while negative PV was 98.7%, with 8% of subestimation and complication rate of 3,1%. Conclusions: Our results confirm the advantages of said procedure in our Center, proving DVAB as highly reliable, with good histological correlation and mi