Metastases in which the tissue of origin is unknown.
Also Known As:
Neoplasms, Unknown Primary; Unknown Primary Neoplasm Metastasis; Neoplasm, Occult Primary; Neoplasm, Unknown Primary; Occult Primary Neoplasm; Primary Neoplasm, Occult; Primary Neoplasm, Unknown; Primary Neoplasms, Occult; Primary Neoplasms, Unknown; Primary Tumor, Unknown; Primary Tumors, Unknown; Tumor, Unknown Primary; Tumors, Unknown Primary; Unknown Primary Neoplasm; Unknown Primary Tumor; Neoplasm Metastasis, Unknown Primary; Neoplasms, Occult Primary; Occult Primary Neoplasms; Unknown Primary Tumors