NCI Definition: A squamous cell carcinoma which has metastasized to another anatomic site and the original site of growth has not been identified. [1]

Disease Details

Unknown primary squamous cell carcinoma (SCC), Epidermoid Carcinoma of Unknown Primary Origin, Squamous Cell Carcinoma of Unknown Primary Origin, Squamous Cell Cancer of Unknown Primary Origin
Squamous Cell Carcinoma
OncoTree Name
Squamous Cell Carcinoma, NOS
OncoTree Code


1. National Cancer Institute. NCI Thesaurus Version 18.11d. https://ncit.nci.nih.gov/ncitbrowser/ [2018-08-28]. [2018-09-21].

2. The AACR Project GENIE Consortium. AACR Project GENIE: powering precision medicine through an international consortium. Cancer Discovery. 2017;7(8):818-831. Dataset Version 6. This dataset does not represent the totality of the genetic landscape; see paper for more information.

3. All assertions and clinical trial landscape data are curated from primary sources. You can read more about the curation process here.