Breast cancer (BC) is the most common female cancer, the second most common cause of cancer death in women, and the main cause of death in women ages 40–59.The most common sites of BC metastases are liver, lung and bones. Metastases to the female genital tract from extragenital cancers are rare. Breasts and the gastrointestinal tract are the most common sites of the primary tumor.Several studies have carried out retrospective analyses comparing the ER, PR, and HER2 status of primary tumors and paired metastasis.We reported that HER2 discordance between primary and metastatic lesion in a 70-years old, postmenopausal woman who was diagnosed as invasive ductal carcinoma (IDC) with bone and endometrial metastases at the time of diagnosis. Keywords: Breast cancer, Her2 discordance, metastasis
Corresponding Author: Sen E.