<unk>  (CUP) is a cancer that is determined to be at the metastatic stage at the time of diagnosis, but a<unk>  tumor cannot be identified. A diagnosis of CUP requires a clinical picture consistent with metastatic disease and one or more biopsy results inconsistent with a tumor cancer CUP is found in about 3 to 5% of all people diagnosed with invasive cancer, and carries a poor prognosis in most (80 to 85%) of those circumstances. The other 15 to 20% of patients, however, have a relatively long survival with appropriate treatment.
Cancer of unknown primary origin
Metastatic breast cancer
Metastatic carcinoma
Non-Hodgkin lymphoma
Hodgkin lymphoma
Large cell neuroendocrine carcinoma of the lung
Radiation-induced cancer
Atypical pulmonary carcinoid tumour