SECT. LXXVIII.—ON FISTULÆ IN ANO.
Fistulæ in ano are discovered, if they are blind, from their being attended with pain, although no orifice appears; from there being a purulent moisture about the anus, and in most cases from their being preceded by symptoms of abscess; or, if they are open, by the introduction of a sound or swine’s bristle; for the instrument will pass down into a cavity and meet the index-finger introduced into the anus if the fistula has penetrated to the inside; but if it has not penetrated, the instrument does not come in contact with the finger but the intermediate substance between them remains imperforated. The fistula is known to be crooked and winding from the instrument’s passing down but a short way, while a great quantity of pus is discharged in proportion. Those near the intestines are known by an abdominal worm or fæces sometimes passing through the mouth of them. In almost all cases some callus appears about the orifice of the fistula. A fistula is incurable that perforates the neck of the bladder, or extends to the joint of the thigh, or to the rectum. A fistula is difficult to cure when it has no orifice, is blind, ends with a bone, and has many windings. All the rest are, in general, easily cured. We proceed with them thus: having placed the patient in a supine posture, with the legs elevated, so that the thighs may be bent upon the belly, as when an injection of the bowels is administered, if the fistula terminate superficially, having introduced a sound or ear-specillum through the orifice of it, we cut the skin which covers it at one incision. But if the fistula terminate deeply in the anus, having introduced a specillum into the mouth of it, and if we find that it has perforated the gut, by introducing the finger into the anus opposite the affected buttock, we take hold of the head of the specillum, and bending it, bring it to the outside, and with one simple division cut asunder the parts which lie over the sound. If the fistula is found not to have as yet perforated the gut, and to have terminated only deeply in the fundament, and if upon examination we find that a scaly or membranous substance intervenes between the index-finger and the extremity of the sound, we must perforate it violently with the head of the sound, and forcing the sound through the rectum, we must again, as formerly described, cut asunder the intervening parts with a scalpel; or, having perforated the bottom of the fistula in ano with the sharp part of a falciform instrument for operating upon fistulæ, we bring the instrument out at the anus, and so divide all the intermediate space with the edge of the instrument; and after the incision, having taken hold of the surrounding parts, which mostly consist of callus, with a common forceps, or one called staphylagra, we cut them out all around, avoiding the sphincter muscle; for some cutting deep in an unskilful manner, have wounded it, from which the patient has had an involuntary discharge of fæces. Those who from timidity, avoid a surgical operation may be treated with the ligature, as recommended by Hippocrates. For Hippocrates directs us to pass a raw thread, consisting of five pieces, through the fistula by means of a probe having a perforation, or a double-headed specillum, and to tie the ends of the thread and tighten it every day until the whole intermediate substance between the orifice be divided and the ligature fall out. If it remain long, the thread may be sprinkled with the detergent powder called psarum, or some such powder, and drawn in. Some insert a thread into the opening of the falciform instrument for operations on fistulæ, and pass it through in the manner described, which I think ought not to be done. For by avoiding an operation, in addition they incur the inconvenience of a slow recovery. With regard to blind fistulæ, Leonides says: “When the fistula is deep, and penetrates the sphincter, whether beginning in the fundament, or arising from a distance and terminating in the sphincter, after the examination which has been described, we dilate the anus as we do the female vagina, with the instrument for that purpose, or the small specillum. When the orifice of the fistula is discovered, the end of an ear-specillum is to be passed through it, and pushed deep into it, and cutting down upon it where it presents, the whole fistula is to be divided with a semispathula or a spathula for operating upon fistulæ.” We having met with this state of the disease, have found it impossible to practise this mode of operating, because we could not discover the cavity of the fistula. For it was situated between the anus and sphincter towards the right side, and the dilator rather obscured the operation. But having dilated the wrinkles about the anus a certain fissure appeared among them, being as it were the defluxion of the fistula, for the pus passed out by it we saw to pass the head of the specillum into the fistula by it, which served as a director; and having passed the index-finger of the right hand to the sphincter, and having found a certain thin substance intervening between the finger and the sound, by pressing the sound violently to the finger, we perforated the bottom of the fistula, which was turned upwards; and passing with the finger the head of the instrument outwards, the whole of the substance between the mouths of the fistula, (I mean the one so situated as to favour the defluxion, and that now made by us,) we divided with a scalpel and cut out the sound.
Commentary. Hippocrates describes minutely the apolinose, or the cure with the ligature, in his work ‘De Fistulis.’ We must mention, however, that Kühn and Sprengel do not admit this among the genuine treatises of Hippocrates, although they allow that it is ancient. Littré also, though with some hesitation, has rejected it from his list of the genuine works of Hippocrates. And yet, considering that it was received as such by Galen and Erotian, it seems bold in any modern critic to refuse its claims.
Celsus likewise describes distinctly the method of applying the ligature. The process, he says, is slow but free from pain. It may be expedited by smearing the thread with some escharotic ointment. The same thing, he adds, may be accomplished by means of a scalpel guided upon a specillum (sound). When many sinuses open by one mouth, he directs us to cut open a straight fistula with a scalpel, and then the others being thereby exposed are to be tied with a thread. The diet is to be of a diluent nature, with a liberal allowance of water for drink. (vii, 4.)
Aëtius gives, from Leonides, a full account of fistulæ in ano, as we have explained in another place. He recommends us to introduce a specillum, and having cut open the fistula upon it, to pare away the callous parts of it. (xiv, 11.)
Actuarius approves of the same practice as the others. He cautions against making large incisions lest the sphincter ani be wounded. (Meth. Med. iv, 6.)
Albucasis delivers nearly the same rules of treatment as our author. According to circumstances he approves of the knife, the cautery, or the apolinose. (Chir. ii, 80.)
Haly Abbas describes only the operation by the incision. He also states that if the sphincter ani be wounded, it will occasion irretention of the fæces. (Pr. ix, 60.) See also Rhases (Ad Mansor. ix, 80; Cont. xxviii); and Avicenna (iii, 18, 1, 18.) Avicenna prefers twisted hairs or bristles of a hog, as they will not putrefy.
Upon the whole no other of the ancient authorities has treated so efficiently of fistulæ in ano as Paulus.
See an excellent account of the operation in Sprengel’s ‘History of Medicine.’ John de Vigo trusted to septics, such as arsenic and the ægyptiacum. Ambrose Paré approved of the apolinose and incision. Severinus was an advocate for the cautery. Foubert and Camper likewise practised the apolinose—the one with a leaden thread, the other with a silk one. Guido de Cauliaco and Rogerius approve of the ligature. Brunus and Theodoricus prefer the actual cautery, but describe the others. The surgeons of this country have now generally rejected the methods with the ligature and the cautery.
The following account of the ancient specillum by the learned Harduin will serve to illustrate our author’s description of the operation. We overlooked it in the commentary on [the fifteenth section]. “Quid sit specillum Varro explicat (Lib. 5 de Lingua Lat.) Quo oculos inunguimus quibus specimus (hoc est, aspicimus), specillum est. Græcis μηλὴ dicitur. Aëtius Serm. 8, 14, cum specillo instrumento, quod melam Græci appellant. Instrumentum parvum ac teres, quo utuntur ad vulnerum aut fistularum viam aut profunditatem pernoscendam. Une sonde de chirurgien.” (Ad Plin. H. N. vii, 54.) If the κοπάριον, however, was the same as the μηλὴ or the specillum, it was evidently used for cutting with as well as for cutting upon.