With the Compliments of the Author. PAPERS UPON GEJMITO- URINARY SURGERY. By a. T. CABOT, A.M., M.D., Surgeon to the Mass. General Hospital. XIX. Observations upon Acquired Hydronephrosis. XX. Observations upon Stone in the Bladder; Recurrence of Stone : Choice of Operation. XXI. Another Successful Case of Uretero-Lithotomy. XXTI. Personal Experience in Modern Operations for the Relief of Prostatic Obstruction. BOSTON: DAVID CLAPP & SON. 1 89 9. PAPERS UPON GERITO-URINARY SURGERY. By A. T. CABOT, A.M., M.D., Surgeon to the Mass. General Hospital. XIX. Observations upon Acquired Hydronephrosis. XX. Observations upon Stone in the Bladder; Recurrence of Stone : Choice of Operation. XXI. Another Successful Case of Uretero-Lithotomy. XXII. Personal Experience in Modern Operations for the Relief of Prostatic Obstruction. BOSTON: DAVID CLAPP & SONl 1899. OBSERVATIONS UPON ACQUIRED HYDRONEPHROSIS.1 Any obstruction in the urinary passages between the kidney and the outer air may cause an accumulation of urine in the renal pelvis and lead to a hydronephrosis. It is with the obstructions in the upper part of the ureter due to some acquired mechanical disarrangement of that tube that this paper has to do. Whether these acquired, uon-congenital cases of hydronephrosis are due in any part to congenital malformation or malposition of the ureter is a matter which in most cases must remain in doubt. For when these cases come to autopsy the acquired changes due to the pressure and displacement of parts by the great accumulation of fluid, mask and make doubtful the original condition. Two forms of obstruction are found in these cases. These are val- vular folds at the entrance of the ureter; and contortions of this tube in the first part of its course which favor the kinking and closure of it when the heavy kidney presses down upon it. Taking first the valvular folds at the ureteral orifice: their etiology is somewhat doubtful. Yirchow regarded the condition to be conse- quent upon a congenital oblique insertion of the ureter in the pelvis, while Simon thought that this slanting insertion was an acquired con- dition due to the stretching of the pelvis and the pressure of it down towards the ureter. Kiister believed that an inflammatory swelling of the pelvic mucosa was necessary to assist Simon’s displacement in form- ing a valve. He thought that the swollen mucous membrane was shifted somewhat on the submucosa and so partly pushed over the ureteral orifice. Hansemann explains the valve formation by the pull of the kidney upon the comparatively immovable upper part of the ureter. It is 1 Read before the Surgical Section of the Suffolk District Medical Society January 8, 1896. 4 plain that if this part of the ureter is fixed, as Englisch asserts, and the kidney then sags downward it carries the ureteral opening with it and produces a valvular condition such as is seen diagrammatically in the cut, at b. This explanation seems applicable and satisfactory in many of the cases, and accounts for the not infrequent association of hydronephrosis with mobility of the kidney. It also helps us to understand those instances in which by change of position an escape of the retained fluid is brought about. As the valve is usually formed by the falling of the kidney downward, Hansemann recommends raising of the hips of the patient in order to correct the condition. It is, however, to be remembered that the displacement of the ureteral orifice may be upwards or to either side if the pelvis dilates unequally in different parts, and in this case some other than the inverted position may straighten the orifice. lie saw one case at autopsy in which a hydronephrotic kidney had the orifice so dis- placed upward that it was only made patent when the pelvis contained considerable fluid and so dragged the kidney down by its weight. This condition was tested by the injection of varying quantities of water and it was found that a certain amount of distention of the pelvis was necessary to alter the orifice so as to allow of the escape of fluid through it. The effect of position in relieving such mechanical obstructions may also be helped by kneading and moving the tumor about, and in these ways relief may sometimes be obtained in those cases of intermittent hydronephrosis where the valve is not a very perfect one. The hydronephrosis sometimes owes its origin to some temporary condition, as for instance, to the stopping of the ureter by a blood-clot, by an inflammatory swelling or by other pressure from without. If, now, this temporary cause is removed, the weight of the hydrone- phrotic sac may then be sufficient to keep up the obstruction by main- taining the valvular condition by the downward pull of the kidney. Under these circumstances a very thorough aspiration, by relieving the weight, may suffice to correct the condition, and, indeed, a certain number of cures are obtained in this way. Drainage of the sac through an incision in the loin is a more efficient means of treatment in such cases, for the constant escape of the fluid 5 gives the sac an opportunity to shrink up and resume its more natural contour. Moreover, the nephrotomy gives the opportunity of drawing the kidney up to the loin and fixing it there, thus preventing any further sagging down. a. Diagram of normal condition. b. Diagram showing change produced when the kidney sags and carries the urethral orifice downward. In this way cures have been obtained and the following operators have been fortunate with this method, more or less perfectly carried out: Weir,1 Peters,2 Tuckwell,8 Cabot.4 The disadvantage of this method of operating is, that, in case the obstruction for any reason remains, the patient is annoyed by a per- sistent urinary fistula. With the fear of this result in view and the valvular nature of the obstruction being recognized, it is natural that attempts should be made to obviate it by direct surgical correction of it. Unsuccessful attempts to relieve the valve at the entrance to the ureter were made by Simon6 prior to 1876, by Trendelenburg6 in 1890 and by Kiister7 in 1891. In Simon’s and Trendelenburg’s operations the ureter was slit up for a considerable distance as it lay alongside the pelvic wall and then an attempt was made to unite the divided borders of the ureter to the lower part of the pelvis. Kus- ter began his operation on the same plan, but finding a stricture, ended by resecting the upper end of the ureter. All these cases resulted fatally. 1 New York Medical Record 1880, xvii, 294, and 1882, xxi, 477. 2 Loc cit., 1882, xxi, 477. 3 London Lancet, 1882, ii, 141. 4 Boston Medical and Surgical Journal, February 22, 1883, 6 Chirurgie d. Nieren, vol. ii, Stuttgart, 1876, 6 Volkmann’s Samml. klin. Yortrage, No. 355. 7 Archiv. f. klin. Chirurgie, Bd. xlvi, Heft 4, p. 850. 6 In May, 1892, Fenger1 did a successful operation for valve forma- tion by cutting through the fold that made the valve and so applying the sutures as to convert the longitudinal cut into a transverse wound. In this case he left a bougie in the ureter for two days and stitched up the kidney that was movable. Myuter2 has since done a similar operation, likewise with good result. These cases are too few to enable us to reach any decision as to whether this is the best way to correct this condition. We must remember the etiology of the valve formation, and must accept the fact that many cases have recovered after a simple nephrotomy with fixation of a movable kidney. We may feel, however, that if a dis- tinct valve formation is found, Fenger’s method of division may be practised without adding materially to the danger of the operation, for the chance of infiltration of urine must be slight when the tension is wholly removed by lumbar drainage. These operations are certainly attempts in the right direction, for they seek to re-establish the function of the kidney; while a nephrectomy, which is the last resort in these cases, is an unscientific proceeding when it removes an organ still doing good work. We come now to consider the other form of obstruction due to mobility of the kidney. A tortuous condition of the upper end of the ureter may be associated with a very movable kidney. This happens so often that it is probable that the twisted condition of the ureter is dependent on the mobility of the kidney. Sometimes, too, an obstruc- tion in the lower part of the ureter leads to a dilatation of the upper part of that canal, which in this case becomes tortuous and may lead to an actual torsion. If, now, at any time by twisting or kinking, a retention of urine is caused and leads to an accumulation in the pelvis, the heavy kidney pressing down towards the already twisted ureter aggravates the previously existing condition and produces a permanent stoppage. The point of obstruction in this case may be at some little distance from the pelvis. Under such circumstances a good result may perhaps be attained by frequent aspirations which, emptying the kidney, allow of a shrinkage of the pelvis and in this way pull up the ureter into place. A nephrot- 1 Transactions American Surgical Association, vol. xii, page 142. * Annals of Surgery, December, 1893. 7 omy, however, offers a much better chance of cure, for by drawing up and fixing the kidney in the loin it tends to straighten the ureter aud so to restore its calibre. If, however, the ureter is so slack and tortuous that its condition does not seem to be remedied in this way, it might even be worth while to resect the upper part of the ureter and, after straightening the tube, to insert its upper end into the pelvis in the manner practised by Kiister and recommended for correction of this condition by Tuffier.1 This is, however, an operation difficult of performance and not devoid of danger. As a less dangerous proceeding, the writer would suggest that this tor- tuous condition can be corrected by inserting a bougie and leaving it in situ for several days. In this way the various curves of the canal are effaced while the pelvis is contracting and pulling it into shape. Furthermore, a moderate amount of inflammation is set up in the walls of the ureter which stiffens them, attaches them to the parts about and thus tends to keep the form given to the tube. The writer has carried out in one case this plan of operating and with so much success that he reports it as a suggestion for future trial. The history of this ex- perience is as follows: Miss H. M. A., thirty-two years of age, was sent to the Massachu- setts General Hospital by Dr. Cooper of Northampton on March 25, 1895, with a cystic tumor of the abdomen. Catamenia had been ir- regular and rather scanty. For four years, from the time she was twenty-two until she was twenty-six, she suffered a great deal of pain in the right side of the abdomen. Two years ago she first noticed an enlargement in the abdomen a little to the right of the median line, and the past year she has had an increase of the pain, which has been almost constant and is more noticed for a week following the catamenia. She has never noticed any symptoms in connection with urination. Examination showed that she was thin and pale, of a feeble muscular development. Nothing found in the chest. Examination of the ab- domen when lying on the back showed a large, fluctuating mass in the right side extending up uuder the liver and going well down to the brim of the pelvis. When she stood up, this mass rested across the lower part of the abdomen just above the pelvis, and the region about the neighborhood of the liver was then empty. 1 Annales