[Parotid tumours: correlation between fine needle aspiration biopsy and histological findings]. / Tumores parotideos: correlación entre la punción aspiración con aguja fina y los hallazgos histopatológicos.

OBJECTIVE: To evaluate the role of the fine needle aspiration biopsy (FNAB) in the study of parotid masses. METHODS: Retrospective review of FNAB results compared with final histological diagnosis in 148 patients with a parotid mass from 1993 to 2003. RESULTS: FNAB was performed in 93.92% of parotid masses. Eleven of these were not conclusive. The FNAB diagnosis of malignant o suspicious lesion had 81.25% of sensibility, 96.87% of specificity and positive and negative predictive values of 89.65% and 93.94%, respectively. The FNAB specific histopathologic diagnosis in the benign parotid masses were 92%, and 57.69% in the malignant masses. CONCLUSIONS: FNAB is a diagnostic tool with a high negative predictive value, very usotul in the study of suspicious malignant parotid masses and whenever surgery is not possible.

Tumores parotideos: correlación entre la punción aspiración con aguja fina y los hallazgos histopatológicos / Parotid tumours: correlation between fine needle aspiration biopsy and histological findings

Objetivo: Establecer la rentabilidad diagnóstica de la punción aspiración con aguja fina (PAAF) en el diagnóstico de las masas parotídeas. Material y métodos: Estudio retrospectivo en el que comparamos los resultados de la PAAF con los hallazgos anatomopatológicos de la pieza quirúrgica, en 148 pacientes diagnosticados de masa parotídea durante el período de 1993 al 2003. Resultados: Se realizó PAAF al 93,92% de las masas parotídeas, 11 fueron no concluyentes. Diagnosticando malignidad, la PAAF presentó una sensibilidad del 81,25%, una especificidad de 96,87% y unos valores predictivos positivo y negativo de 89,65% y 93,94%, respectivamente. Al evaluar la precisión en el diagnóstico exacto de la lesión, encontramos una concordancia del 92% en los tumores benignos y del 57,69% en los tumores malignos. Conclusiones: La PAAF es una prueba diagnóstica con un alto valor predictivo negativo, muy útil en el estudio de las masas parotídeas sospechosas de malignidad o en aquellos casos en los que no se vaya a realizar cirugía

Objetive: To evaluate the role of the fine needle aspiration biopsy (FNAB) in the study of parotid masses. Methods: Retrospective review of FNAB results compared with final histological diagnosis in 148 patients with a parotid mass from 1993 to 2003. Results: FNAB was performed in 93.92% of parotid masses. Eleven of these were not conclusive. The FNAB diagnosis of malignant o suspicious lesion had 81.25% of sensibility, 96.87% of specificity and positive and negative predictive values of 89.65% and 93.94%, respectively. The FNAB specific histopathologic diagnosis in the benign parotid masses were 92%, and 57.69% in the malign masses. Conclusions: FNAB is a diagnostic tool with a high negative predictive value, very usotul in the study of suspicious malignant parotid masses and whenever surgery is not possible