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CLASSIFICATION
Classification
Kimura–Takemoto classification (gastric atrophy)
Closed / Open classification by the endoscopic atrophic border.
Classification overview
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No atrophy
•
C-0 · Not in the original paper
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Closed type
•
C-1 · Closed type
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C-2 · Closed type
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C-3 · Closed type
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Open type
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O-1 · Open type
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O-2 · Open type
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O-3 · Open type
No atrophy
C-0
Not in the original paper
Note: Not one of the original 6 types. Used as Kyoto atrophy 0 (C-0/C-1).
Closed type
C-1
Closed type
Border
Endoscopic atrophic findings are not visible in the corpus but only in the antrum.
Note: Kyoto atrophy 0 points (C-0/C-1).
C-2
Closed type
Border
The atrophic border starts from the greater curvature of the antrum, coming up to the anterior wall, crossing the lesser curvature, making an almost symmetric enclosure. The atrophic border lies below the middle of the stomach on the lesser curvature.
Note: Kyoto atrophy +1 point (C-2/C-3).
C-3
Closed type
Border
The atrophic border starts from the greater curvature of the antrum, coming up to the anterior wall, crossing the lesser curvature, making an almost symmetric enclosure. The atrophic border lies above the middle of the stomach on the lesser curvature.
Note: Kyoto atrophy +1 point (C-2/C-3).
Open type
O-1
Open type
Border
The endoscopic atrophic area is widely spread. The atrophic border no longer lies on the lesser curvature, but instead between the lesser curvature and the anterior wall.
Note: Kyoto atrophy +2 points (O-1–O-3).
O-2
Open type
Border
The atrophic border lies on the anterior wall.
Note: Kyoto atrophy +2 points (O-1–O-3).
O-3
Open type
Border
The atrophic border lies between the anterior wall and the greater curvature.
Note: Kyoto atrophy +2 points (O-1–O-3).
Quach 2019, Fig. 2, Not original, CC BY-NC
Reference
Original article
Kimura K, Takemoto T. Endoscopy 1969;1:87-97
Review
Quach DT, Hiyama T. Clin Endosc 2019;52:321-327
Related tools
Kyoto classification risk score (original 0–8)
Kyoto classification (modified)
SCORE
Kyoto
→
EGGIM (endoscopic IM score)
Extent of map-like atrophy
SCORE
EGGIM
→
OLGA (gastritis stage by atrophy)
Biopsy atrophy stage
SCORE
OLGA
→
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Decision support only. Follow current guidelines and local protocols. Classification definitions and terminology follow the original publication language.