Cancers of unknown primary (CUP) , represent 1-3\% of all cancers and is an enigmatic disease where the primary site of origin cannot be determined.
<fluency> Cancers of unknown primary (CUP) , represent 1-3\% of all cancers and is an enigmatic disease where the primary site of origin cannot be determined.
Cancer of unknown primary (CUP) , represent 1-3\% of all cancers and is an enigmatic disease where the primary site of origin cannot be determined.