. Author manuscript; available in PMC: 2015 Sep 1.

Published in final edited form as: Ann Assoc Am Geogr. 2015 Apr 27;105(3):454–472. doi: 10.1080/00045608.2015.1018777

Table 2.

Correspondence of modeled cancer stages to anatomic stages from the American Joint Committee on Cancer. Primary Tumor (T) coding is Tis: Carcinoma in situ; T1: Tumor limited to pancreas, 2cm or less in greatest dimension; T2: Tumor limited to pancreas, more than 2cm in greatest dimension; T3: Tumor extends beyond the pancreas but without involvement of the celiac axis or the superior mesenteric artery; T4: Tumor involves the celiac axis or the superior mesenteric artery (unresectable primary tumor). Regional lymph nodes (N) coding is N0: No regional lymph node metastasis; N1: Regional lymph node metastasis. Distant metastasis (M) coding is M0: No distant metastasis; M1: Distant metastasis.

Model stage	AJCC stage	Prognostic Groups			Diagnosed
Early (q₆)	Stage 0	Tis	N0	M0	N
	Stage IA	T1	N0	M0	N
	Stage IB	T2	N0	M0	N
Late (q₇)	Stage IIA	T3	N0	M0	N
	Stage IIB	T1–3	N1	M0	N
	Stage III	T4	Any N	M0	N
	Stage IV	Any T	Any N	M1	N
Diagnosed (q₈)	Any stage	Any T	Any N	Any M	Y