Review Article

Sentinel Lymph Node Biopsy in Nonmelanoma Skin Cancer Patients

Box 1

Criteria for a high-risk of metastatic sentinel node in Merkel cell carcinoma.
Greatest horizontal diameter ≥3.75 mm
Histopathologic factors
Infiltrative tumour growth pattern
Mitotic rate >10
Size > 1 cm/>2 cm
Tumour thickness >2 mm