Fissure of the Anus and Fistula in Ano

by Jr. Lewis H. Adler

Fig. 16—Internal Incomplete Fistula (Esmarch).

Fig. 17—External Incomplete Fistula (Esmarch).

Fig. 18.

Fig. 19.

FISTULÆ WITH DOUBLE TRACKS (MOLLIÉRE).

Fig. 18—A, B, deep submuscular track resulting from an ischio-rectal abscess; A, I, submucous track running up and down the bowel.