Neoplasms, Unknown Primary

Unknown Primary Neoplasm Metastasis; Unknown Primary Neoplasms; Neoplasm, Occult Primary; Neoplasm, Unknown Primary; Occult Primary Neoplasm; Primary Neoplasm, Occult; Primary Neoplasm, Unknown; Primary Neoplasms, Occult; Primary Neoplasms, Unknown
Metastases in which the tissue of origin is unknown.