In clinical practice, breast-related stereotype threat should be measured together with prevalent symptoms (e.g. anxiety, depression and fatigue) in patients with breast cancer. Our findings will aid the development of interventions for improving the mental health of women with breast cancer.

Objective: We aim to evaluate anxiety, depression and fear of cancer progression in newly diagnosed patients with breast cancer when cancer care was returning to normal after COVID-19 by comparing them with the pre-COVID patients and explore the association of worries about further cancer care and loneliness with them.Methods: Two hundred and eighteen newly diagnosed patients with breast cancer during the pandemic were surveyed using questionnaires, and 153 patients before the pandemic were included in the control group. Logistic regression analyses were used.Results: There were 51.8%, 44.0% and 30.7% of patients during the pandemic reported anxiety symptoms, depressive symptoms and clinically significant fear of cancer progression, respectively. The risks of anxiety symptoms (OR 2.24, 95% CI 1.43-3.51), depressive symptoms (1.61, 1.04-2.50) and clinically significant fear of cancer progression (4.65, 2.49-8.70) were higher in patients during the pandemic than pre-COVID patients. Worries about further cancer care and loneliness were associated with 1.40-2.52 times higher risks of these psychological problems among the patients during the pandemic. Conclusions:The newly diagnosed patients with breast cancer during COVID-19 are at elevated risks of depression, anxiety and fear of cancer progression, and those who are worried about further cancer care and felt loneliness during the pandemic were more likely to experience psychological problems.