This is a protocol for a Cochrane Review (Diagnostic test accuracy). The objectives are as follows:

To determine the diagnostic accuracy of sentinel lymph node biopsy (SLNB) for the detection of nodal metastases (in the investigated nodal basin) for the staging of cutaneous squamous cell cancer (cSCC).

To determine the diagnostic accuracy of imaging tests, including ultrasound, computed tomography, magnetic resonance imaging and positron emission tomography, alone or in combination, for the detection of any metastasis for the staging of cutaneous squamous cell cancer.