TY - JOUR AU - Toss, Angela AU - Moscetti, Luca AU - Cascinu, Stefano PY - 2019 TI - Occult breast cancer: the uncommon presentation of a common disease JF - Chinese Clinical Oncology; Vol 8, Supplement 1 (October 22, 2019): Chinese Clinical Oncology Y2 - 2019 KW - N2 - Cancer of unknown primary site (CUP) is defined as the presence of secondary lesions in the absence of any detectable primary tumor at the time of presentation. The CUP syndrome represents a rare condition with varying biologic behaviors and generally poor prognosis (1,2). UR - https://cco.amegroups.org/article/view/23885