Criteria for selection and classification of studies in medical events.

Objective: The aim of this study was to evaluate the impact of study methodology and evaluation type on the selection of studies during the presentation of scientific events.

Methods: A prospective, observational, transversal approach was applied to a cohort of studies that were submitted for presentation at the 2021 Brazilian Breast Cancer Symposium. Three forms of criteria (CR) were presented.

Interval cytoreduction in advanced ovarian cancer: Santa Casa São Paulo experience.

Objective: To analyze the interval cytoreduction in patients with advanced ovarian cancer.

Methods: A prospective study was carried out with 25 patients with advanced ovarian cancer (stages IIIC or IV) who underwent interval cytoreduction. Nonresectability criteria were based on the ones from Gustave-Rousy Institute.

Cox-2 and its association with prognostic factors and response to primary chemotherapy in patients with breast cancer.

Objective: To evaluate the immunohistochemical expression of cox-2 before primary chemotherapy with 5-fluorouracil, epirubicin and cyclophosphamide (FEC) and its association with initial tumor size, lymph node status, hormone receptors, expression of HER2 and the clinical and pathological response in patients with breast cancer.

Methods: We conducted a retrospective study with 41 women with histopathological diagnosis of ductal breast carcinoma. They underwent primary chemotherapy with FEC regimen (5-fluorouracil, epirubicin and cyclophosphamide) at 500mg/m2, 75mg/m2 and 500 mg/m2, respectively.