"Extended" radical cholecystectomy for gallbladder cancer: Long-term outcomes, indications and limitations

Table 3 Five-year survival according to the extent of tumor spread

Extent of tumor spread1	No. of 5-yr survivors (n = 34)	No. of non-5-yr survivors (n = 18)
pT1 (n = 3)
pT1a pN0 pM0 (Stage I)	2	0
pT1b pN0 pM0 (Stage I)	1	0
pT2 (n = 36)
pT2 pN0 pM0 (Stage II)	20	1
pT2 pN1 pM0 (Stage IIIB)	5	2
pT2 pN2 pM0 (Stage IVB)	4	3
pT2 pN2 pM1 (Stage IVB)	0	1
pT3 (n = 12)
pT3 pN0 pM0 (Stage IIIA)	0	3
pT3 pN1 pM0 (Stage IIIB)	2	3
pT3 pN2 pM0 (Stage IVB)	0	1
pT3 pN0 pM1 (Stage IVB)	0	2
pT3 pN2 pM1 (Stage IVB)	0	1
pT4 (n = 1)
pT4 pN2 pM0 (Stage IVB)	0	1

¹According to the American Joint Committee on Cancer Cancer Staging Manual (7th edition)[19]. pT: Pathological T classification; pN: Pathological regional lymph nodes classification; pM: Pathological distant metastasis classification.