Table 2 Yiengpruksawan proposed staging system with treatment recommendation, SLNB = sentinel lymph node biopsy

I

Localized disease

Surgery: local excision > 2 m margins, SLNB Radiation therapy: adjuvant after resection

   IA

≤ 2 m primary tumour

   IB

> 2 cm primary tumour

II

Regional lymph node involvement

Surgery: local excision > 2 m margins, lymph node dissection

Radiation therapy: adjuvant, primary site and lymph node region

III

Distant metastases

Radiation therapy: palliative use