Fissure of the Anus and Fistula in Ano

by Jr. Lewis H. Adler

Fig. 19—D, E, subtegumentary and submucous fistula with internal and external opening; D, F, deep submuscular track, having same internal but separate external opening.

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[33]. Op. cit., p. 152.

[34]. Op. cit., p. 13.

[35]. Op. cit., p. 13.

[36]. Op. cit., p. 66.

[37]. Op. cit., p. 67.

[38]. Op. cit., p. 13.

[39]. Keating's "Cyclopædia of the Diseases of Children," vol. iii, p. 341.

[40]. Allingham, op. cit., p. 14.