2005: Diagnosis and management of neck metastases from an unknown primary
2014: Management of lymph node metastases from an unknown primary site to the head and neck (Review)
https://www.ncbi.nlm.nih.gov/pubmed/22180229
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4266274/
https://www.ncbi.nlm.nih.gov/pubmed/23616406
http://www.sciencedirect.com/science/article/pii/S1879729614001264
Sample operative report