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Biomedical subjects

R de Petriconi

Publications and source records attributed to R de Petriconi.

12 recordsLinked to original sources

[Kidney carcinoma in Bourneville-Pringle disease].

We report a case of renal cell carcinoma in a 28-year-old woman with Bourneville-Pringle's disease. A review of the literature revealed 16 cases of renal cell carcinoma associated with tuberous sclerosis. The incidence of angiomyolipoma among patients with Bourneville-Pringle's disease is cited in the literature as 40-80%, but this is based solely on two early publications, while other publications suggest a considerably higher incidence of renal cell carcinoma in Bourneville-Pringle's disease, as in other phacomatoses (Hippel-Lindau's disease). We therefore recommend screening for renal cell carcinoma in patients with Bourneville-Pringle's disease.

Adult

The ileal neobladder. Operative technique and results.

Bladder substitution by continent bowel reservoirs has been one of the real advancements in modern urology. Short-term experience with and patients' acceptance of the ileal neobladder have been excellent. As do others, we consider this technique to date the procedure of choice in male patients requiring radical cystectomy.

Adult

[Low-pressure ileal neobladder formed by antimesentery section of circular smooth muscle fibers].

The goal of this presentation is to describe operative technique and first clinical results of a ileal neobladder for total bladder replacement. Creation of an ileal neobladder for total bladder replacement is described in 18 patients. To achieve a low pressure system, disruption of directional bowel peristalsis with a longitudinal incision at the antimesenteric border of a 70 cm ileal segment is performed. A spherical pouch, the neobladder, is fashioned and anastomosed to the urethra. The ureters are implanted according to Le Duc and Camey. Videourodynamic studies during various postoperative phases demonstrate this neobladder to be a urinary reservoir with a capacity approximating that of a normal bladder, good compliance during filling by maintaining pressures lower than 30 cm water and no reflux. Advantages of this procedure when compared with "Kock's pouch", "Mainz pouch", "Camey's ileal bladder" or "the Bag" are: non interference with terminal ileum and Bauhin's valve (vitamin B 12 absorption); simple, sure surgical technique giving constant results (absence of invagination, and of rotation on mesenteric axis as in Kock's pouch); sensitivity of new bladder with rhythmicity of micturition in 18 cases; lowest intracavitary pressures of all reconstructed reservoirs.

Humans

[Spontaneous rupture of the kidney. Apropos of a case of Kussmaul-Meier panarteritis nodosa].

A patient with periarteritis nodosa presented with purely intra-abdominal visceral manifestations. This form of the affection, in the absence of subcutaneous granulomas allowing histologic examination, can be revealed only by celiac and renal angiography, results being pathognomonic. As a function of the organ involved the clinical picture can be dramatic, with rupture of parenchymatous organs affecting vital prognosis and requiring immediate surgery.

Adult

[Intravesical explosion during endoscopic resection. Apropos of a case].

Intravesical explosion during endoscopic resection are rare but may be devastating in effect, as shown by the case reported. The formation of explosive gas, essentially an air-hydrogen mixture, results from carbonization of tissues (particularly with the coagulation current) and the introduction of air into the bladder during manipulation of the resector. The nature of the bladder infusion liquid does not appear to play an important role. Prevention implies the use of a coagulation current of moderate power, the avoidance of air entering the bladder accidentally, and the continuous or repeated evacuation of the air bubble under the bladder vault.

Cystoscopy

[Diagnosis and emergency treatment of traumatic rupture of the male urethra in pelvic fractures. Apropos of 14 cases].

Fourteen of 400 cases of fractured pelvis had rupture of the urethra and, unfortunately, an exploratory catheter was introduced in nearly all these patients. Routine radiological investigations were not conducted, and true emergency surgical repair was performed in only 3 cases, all of these three patients obtaining good urethral permeability. Analysis of data on recently published cases and from the present series shows that opposing views are still held by those who support immediate, emergency (true or deferred) end-to-end suture of the urethra, and those who advocate simple suprapubic drainage of the bladder or "realignment" of the urethra over an indwelling catheter with or without a direct approach to the site of rupture. However, carefully executed immediate end-to-end suture gives better results than other methods, and also considerably reduces duration of hospital stay and incapacity for work.

Adult

[Treatment of primary vesico-renal reflux in adults. Apropos of 41 cases].

Between October 1970 and March 1983, forty one adults (thirty six women and five men) were treated for vesico-ureteral reflux. Fifteen were treated medically and twenty six surgically. In the latter category, four total nephrectomies were performed, one nephrectomy of the upper pole of a duplicated kidney, and twenty one antireflux ureterovesical reimplantations, involving thirty four ureters. The procedures used were Cohen's (26 cases) and Leadbetter-Politano (7 cases). The procedure used in one case is not recorded. The reflux was eliminated in all the cases, except one, which was a reoperation for ureteral stricture in a patient previously treated for reflux in another hospital. Of the sixteen patients with urinary infections, five remained infected despite the elimination of the reflux. IVP and isotopic exploration of kidney function revealed no postoperative change in the majority of the patients. Two patients, suffering from renal insufficiency preoperatively, required dialysis two and four years, respectively, after the elimination of the reflux.

Adult

[Bladder duplication. A case report].

Duplication of the bladder is uncommon and rarely occurs as an isolated anomaly. This anomaly is classified as complete duplication, incomplete duplication, complete sagittal septum and incomplete sagittal septum. We present the case of a 7 month old child which had recurring pyuria.

Diagnosis, Differential

[Panarteritis nodosa--a urologic problem?].

A case of panarteritis nodosa with renal and intraabdominal symptoms is described. Diagnosis of this visceral form of this rare disease is extremely difficult, and in the absence of subcutaneous granulomata can only be made on angiography. Depending on the site affected, visceral disease can lead to life threatening internal haemorrhage which in most cases has to be treated surgically.

Adult

[Contact renal refrigeration with continuous control of the intrarenal temperature in surgery for staghorn calculi].

Surgical treatment of staghorn calculi is a meticulous, difficult, and time-consuming procedure which requires the taking of contact films during operation. Incision of the renal parenchyma is frequently also necessary. To limit blood loss, and mainly in order to have a clear field of view, intrarenal blood circulation has to be interrupted by clamping the renal pedicle. This circulatory arrest can be supported for only 20 minutes, without major risks to the renal parenchyma, under normal temperature conditions. However, at least in the authors' hands, more than 10 minutes are necessary between the taking of the contact film and its return after development to the operation room. In contrast, lowering renal temperature by 10 to 20 degrees C enables ischemia to be maintained for up to 4 hours without adverse consequences. Contact refrigeration of the kidney by surrounding it with crushed ice is used, permanent control of temperature being maintained by a thermocouple linked to a continuous digital display. This simple, easy to install method does not require high investments or sophisticated material. It has enabled continuous clamping to be applied for periods of up to nearly 2 hours, with normal follow-up I.V.P. one week later.

Humans