INTRODUCTION
breast cancer, cancer, numbness, postoperative lymphedema, lymphedema, BCRL
FEMALE BREAST CANCER, CANCER, LYMPHEDEMA, BREAST CANCER
Epidemiological investigations reported that there were 19.3 million new cancer cases worldwide in 2020, of which female breast cancer accounted for 11.7% and was ranked first in cancer incidence among women.Since BCRL is difficult to cure once it occurs, increasing patient awareness and education about the risk of lymphedema and focusing on prevention and early lymphedema intervention are even more necessary to improve the quality of life and survival of breast cancer patients. The initial manifestations of BCRL, such as numbness and soreness, are easily overlooked by patients. A study from China used a self‐designed postoperative lymphedema prevention knowledge questionnaire to survey breast cancer patients and reported that they had poor knowledge of BCRL,Whitworth et al.'s systematic review showed that prospective BCRL surveillance combined with early detection and intervention could reduce the incidence of chronic BCRL.Knowledge–attitude–practice (KAP) is currently used in patient rehabilitation guidance and education.