Table 1 O’Brien et al. system for clinical staging of metastatic cutaneous SCC involving the parotid gland
From: Prognostic factors for metastatic cutaneous squamous cell carcinoma of the parotid
O’Brien et al. system for clinical staging of metastatic cutaneous SCC involving the parotid gland[8] | |
|---|---|
Parotid | |
P1 | Metastatic node ≤ 3 cm |
P2 | Metastatic node > 3 cm but ≤ 6 cm or |
Multiple parotid nodes | |
P3 | Metastatic node > 6 cm or |
Disease involving facial nerve or skull base | |
Neck | |
N0 | No clinical neck disease |
N1 | Single ipsilateral neck node ≤ 3 cm |
N2 | Single node > 3 cm or |
Multiple nodes or Contralateral neck nodes | |