Temporal variation of breast cancer surgical treatment in a university hospital in Brazil's Central West region.

Objective: To assess the types of surgical treatments for breast cancer performed by the Mastology program of the Clinics Hospital, Federal University of Goiás (HC-UFG).

Methods: We conducted a cross-sectional, cohort study on the breast operations performed at HC-UFG from January 2002 to December 2009. We evaluated the surgical records for: surgical time and size, surgeon, type of operation, diagnosis, and type of anesthesia. The medical charts were researched for: pathology report of the tumor, lymph node involvement, primary tumor size, staging and performance of neoadjuvant therapies. We excluded operations for the removal of benign breast tumors. The temporal variation was analyzed using Poisson regression, considering the annual percentage change (APC).

Results: 403 operations were performed for breast cancer during the study period, with an average of 50.38 operations per year. The most common histological type was invasive ductal carcinoma (72.6%). The mean age of patients was 52 years, and 29% had disease in stages III and IV. The temporal trend revealed a significant increase in tumor size (p <0.01), the clinical stages III and IV (p = 0.01) and the use of neoadjuvant chemotherapy (p = 0.02). There was increase in mastectomies (APC = 9 cases/year, p = .04). There was no increase in cases of breast conservation treatments or of mastectomies with immediate reconstruction.

Conclusion: In recent years, the HC-UFG has had an increased number of mastectomies as a result of increased incidence of locoregionally advanced breast cancer.