Evaluation and management of malignant cervical lymphadenopathy with an unknown primary tumor

Abstract

Patients with malignant cervical lymphadenopathy without an evident primary site are considered to have an unknown primary tumor.Several management concerns arise in this situation including how best to seek a primary site and, if none is identified, how to treat these patients. This article discusses theories as to the etiology of the unknown primary tumor, diagnostic modalities highlighting the role of emerging technologies, and treatment strategies.