The investigators will retrospectively study the demographic , clinicopathological characteristics and survival of breast cancer patients admitted to Assiut University hospital from the year 2015 to 2019

Breast cancer is one of the most common malignancies in females, which is the second leading cause of cancer death throughout the world after lung cancer . The incidence of breast cancer has been increasing over the past decades , especially in young women (≤ 35 years old). There is approximately 182,000 women with breast neoplasm annually in the United States, accounting for about 26% of all incident cancers among women.

In Asia, the morbidity rate is as high as 9.5%-12% . Even worse in China, the average onset age of breast cancer might be 8-10 years younger than that in Western countries which account for upto 4% in total breast cancer patients .

In Egypt, breast cancer is the commonest type of female malignancy represented about 38.8% among common cancer sites in females.Although The unclear etiology of the majority of breast cancer, but there are numerous risk factors for the disease. Screening and early detection when combined with adequate, efficient treatment is considered the hope for a reduction of mortality in breast cancer as postulated by World Health organization (WHO).

Inclusion Criteria:

• All histologically confirmed and documented patients with invasive ductal or lobular carcinoma of the breast attending at Assiut University hospital from year 2015 to 2019.

Exclusion Criteria:

• • Patients who previously received treatment outside Assiut University hospital.

  • A serious un controlled concomitant disease that would contraindicate with use of systemic treatment. .

Retrospective study on breast cancer patients : A single institution study