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. 2023 Jun 22;9:115. doi: 10.1186/s40792-023-01701-z

Fig. 4.

Fig. 4

Gross findings of the resected fistula and normal stoma. Gross examination of the resected specimen showing the normal stomal orifice (arrowhead) and the fistula orifice (arrow). The fistula colon exhibits a loss of muscularis propria