Achados mamográficos e anátomopatológicos de mulheres participantes de campanhas de rastreamento para câncer de mama em centro de referência em oncologia

Abstract

Objective: To analyze the mammographic radiologic findings during screening campaigns of a Brazilian Oncology Center. The mammographic radiologic findings, the complementary diagnostic tests eventually requested and the patient’s adherence to the screening recommendations were studied. Methods: A retrospective study was conducted including all 771 patients that participated in the stimulated and gratuitous screening program of the A. C. Camargo Cancer Center, São Paulo, Brazil, during 2008. The patient’s records were analyzed in order to obtain result from mammography tests, breast ultrasonography, biopsies and surgeries. Results: The women`s age varied from 24 to 107 years old. (average: 55 years old), 259 (34%) under 50 years old, 423 (55%) between 50 and 69 years old and 89 (11%) older than 69 years old. The mammography results were classified as follows: BI-RADS 0 =186 (25,1%), BI-RADS 1 = 114 (14,8%), BI-RADS 2 =395 (51,2%), BI-RADS 3 =50 (6,5%), BI-RADS 4 = 16 (2,1%) e BI-RADS 5 =2 (0,3%). Complementary ultrasonography exam was performed in 184 (24%) of all patients. Thirty three (4%) lesions were submitted to histopathological analyses revealing 6 (8%) cases of cancer. They were 3 invasive ductal carcinomas, 2 in situ ductal carcinomas and 1 lobular carcinoma in situ. Five of those cancers were surgically classified as Stage 1 disease and One as Stage 2 disease. After 4 years 87 (15%) patients returned for new screening exams. Conclusion: There was a meaning ratio of patients out of Brazilian National Cancer Institute (INCA) recommendation for breast cancer screening. The rates of complementary ultrasonography were high. The number of patients diagnosed with cancer and the rates of diagnoses in initial grades are in consonance with the literature. The opportunistic screening model revealed low return rate for new screening tests.