General Surgery • NEET MDS
T1 = tumor less than 2cm.
T2 = tumor 2-4cm.
T3 = tumor greater than 4cm.
T4 = invasion of adjacent structures bone skin.
N0 = no regional lymph node metastasis.
N1 = single ipsilateral node less than 3cm.
Radical neck dissection = removes all 5 structures SCM IJV SAN.
Modified radical = spares 1 or more structures.
Selective neck dissection = specific levels only.
Use these mnemonics during your revision. The key associations above are designed to help you recall Head Neck Cancer TNM concepts instantly during the exam. Focus on the “equals” associations — these are the most commonly tested patterns in NEET MDS.