唾液腺の腫瘍

T1 ≤ 2 cm intraparanchymal;
T2 ≤ 4 cm, intraparenchymal
T3, > 4 cm and/or extracapsular
T4a, skin/mandible/ear canal/facial nerve
T4b, skull base/pterygoid/carotid artery encasement


pN0    No regional lymph node metastasis
 
pN1    Metastasis in a single ipsilateral lymph node, 3 cm or less in great
est dimension without extranodal extension

pN2a    Metastasis in a single ipsilateral lymph node, more than 3 cm but not more than 6 cm in greatest dimension without extranodal extension
    or single <3 cm with extranodal extension

pN2b    Metastasis in multiple ipsilateral lymph nodes, none more than 6 cm in greatest dimension without extranodal extension

pN2c    Metastasis in bilateral or contralateral lymph nodes, none more than 6 cm in greatest dimension without extranodal extension

pN3a    Metastasis in a lymph node more than 6 cm in greatest dimension without extranodal extension

pN3b　> 3 cm with extranodal or multiple, ipsilateral or contralateral or bilateral with extranodal extension

pN と Staging はhypopharynxと同じ

Stage I, T1; Stage II, T2
Stage III, T3N0 or T123N1
Stage IVA, T123N2 or T4aN012
Stage IVB, T4b or N3
Stage IVC, M1

Tumours of salivary glands (Please subscribe to see the links)