Incidence, Histopathological Grade, and Type of Breast Cancer at Tarakan General Hospital, Jakarta, Indonesia in 2021

Breast cancer is a malignant tumor that arises from cells in the glands, glandular ducts, and supporting glands of the breast. Histopathological examination is needed to establish a definitive diagnosis, determine the type of breast cancer, assess the histopathological grade, and size of cancer that influences, and provide an overview of the management that can be done. This study aimed to describe the incidence of breast cancer based on the degree and histopathological classification at the Tarakan Regional General Hospital in 2021. This study uses medical record data with a retrospective study using the purposive sampling method. Based on the medical records of the Anatomic Pathology Laboratory at Tarakan Hospital, Jakarta, Indonesia in 2021, a total of 36 patients were obtained who had undergone histopathological examination and met the inclusion criteria, namely the variables used were the degree and histopathological classification. The highest incidence of breast cancer based on age was in the 40-year age group with 27 cases (75.0%). All patients were female (100.0%). The most frequent histopathological degree was grade III, found in 18 cases (50.0%). The most common histopathological classification was invasive ductal carcinoma with 30 cases (83.3%). The most common age based on histopathological grade was 40 years old with 27 people (75.0%) with grade III with 14 people (38.9%). The most common age based on histopathological type was 40 years old with 27 cases (75.0%) with the most common histopathological type being invasive ductal carcinoma with 24 cases (66.7%).