According to 8th AJCC TNM classification of carcinoma Gallbladder, minimum number of LN involved in N2?
8th AJCC (2017) TNM classification of Ca. gall bladder N1 - Metastasis to 1 - 3 regional nodes. N2 - Metastasis to 4 or more regional nodes. M1 - Distant metastasis.
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Gallbladder