Correlation between breast and axillary pathologic complete response after neoadjuvant chemotherapy in breast cancer.

Aim: The aim of this study was to evaluate the correlation of the pathological response in breast tissue and the axilla of patients with breast cancer who underwent surgery following neoadjuvant chemotherapy.

Method: This retrospective cohort study included patients with T1-4, N1-3, M0 breast cancer who underwent surgery following neoadjuvant chemotherapy at Gaziosmanpasa Training and Research Hospital between 2013 and 2022. The response of the breast tissue to chemotherapy was evaluated with the Miller-Payne grading system, and the response of the axillary lymph nodes to chemotherapy was evaluated with the Pinder grading system.

The effect of the Covid 19 pandemic on the number of patients treated for acute and complex acute appendicitis.

Aim: The aim of this study was to compare the increase in the number of complicated cases in patients who underwent surgery for acute appendicitis during the COVID-19 pandemic and the previous year.

Material And Methods: A retrospective examination was made of the files of patients who presented at the Emergency Department and were diagnosed with acute appendicitis and underwent surgery within 24 hours or were followed up between 11 March and 1 June 2020 during the COVID-19 pandemic, and in the same period in the previous year. The patients in the pandemic period were named the pandemic group (PG) and the patients from the previous year, the control group (CG).