A manual of modern surgery : an exposition of the accepted doctrines and approved operative procedures of the present time, for the use of students and practitioners . B Diagram of three forms of anal Complete fistule. B. Incomplete internal fistule. C. Incomplete external fistule. there is no external indication of the tumor, except when the cavity inthe tissues around the rectum fills up with pus and makes a slightbulging of the skin. This can be made to disappear by pressing uponthe cutaneous surface and forcing the accumulated pus through theinternal opening into the rectum. The
A manual of modern surgery : an exposition of the accepted doctrines and approved operative procedures of the present time, for the use of students and practitioners . B Diagram of three forms of anal Complete fistule. B. Incomplete internal fistule. C. Incomplete external fistule. there is no external indication of the tumor, except when the cavity inthe tissues around the rectum fills up with pus and makes a slightbulging of the skin. This can be made to disappear by pressing uponthe cutaneous surface and forcing the accumulated pus through theinternal opening into the rectum. The diagnosis in such cases maysometimes be confirmed by feeling with the finger in the rectum theragged orifice through which the communication between the cavityand the bowel is kept up. In complete anal fistules the rectal open-ing is usually within an inch of the anus, but the pus secreting pouchor pocket situated in the ischio-rectal space may extend to a higherpoint than this on the outside of the rectum. This is readily under- ANAL FISTULE. 701 stood, because at the time of the formation of the abscess the pus mayhave burrowed upward along the rectum before
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