Disease progression in rectal GISTs according to AJCC 2017 stage

Stage	Tumor size (cm)	Mitotic rate	Observed rate of progressive disease
Stage IA	≤2 cm	Low	0%
Stage IA	>2 to 5	Low	8.5%
Stage II	>5 to 10	Low	NR
Stage IIIA	>10	Low	57%
Stage IIIA	≤2	High	54%
Stage IIIB	>2 to 5	High	52%
	>5 to 10	High	NR
	>10	High	71%

GISTs: gastrointestinal stromal tumor; AJCC: American Joint Committee on Cancer; NR: not reported.

Original figure modified for this publication. Miettinen M, Lasota J. Gastrointestinal stromal tumors: pathology and prognosis at different sites. Semin Diagn Pathol 2006; 23:70. Table used with the permission of Elsevier Inc. All rights reserved.

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