PubMed Health⌕ Search

Biomedical subjects

F T Dénes

Publications and source records attributed to F T Dénes.

At least 19 recordsLinked to original sources
PubMed2001

Laparoscopic management of intersexual states.

Laparoscopy has gained acceptance as the ideal method of surgical treatment of the internal [figure: see text] genital organs in patients with intersex disorders. The intersexual states for which laparoscopy is needed are female and male pseudohermaphroditism, true hermaphroditism, and Turner's syndrome. In these patients, the indications for laparoscopy are the removal of normal gonads and ductal structures that are contrary to the assigned gender and the removal of dysgenetic gonads that are nonfunctional and that present potential for malignancy. In addition to being a minimally invasive surgery, one of the main advantages of this method is the lack of scars, a fact much appreciated by patients and their parents. Generally, gonadectomy is a straightforward operation because the gonads present with an accessible pedicle. Laparoscopic orchidopexy has been standardized and can be performed in patients in whom the testis must be relocated to the scrotum. The removal of ductal structures is also easily performed in most cases, whereas hysterectomy with resection of the vagina may present some difficulties owing to the location of these structures. In patients with a long vaginal component of the urogenital sinus, the distal segment must be removed by a retrograde perineal access, usually performed simultaneously with genitoplasty. Endocrinologists must be aware of the application of this method of treatment in intersex patients, and urologists proficient in laparoscopic techniques must extend their field of work in this area.

Disorders of Sex Development↗
PubMed1995

Transureterocalicostomy: an alternative internal diversion technique.

We report a case of an infiltrating retroperitoneal tumor that completely enveloped and obstructed the mid third of the left ureter. After resection of the tumor, including a 10 cm. long segment of ureter, the upper left ureter was successfully diverted to the upper calix of the right ectopic kidney (transureterocalicostomy). To our knowledge our report represents the first case of such surgery.

Aged↗
PubMed1986

Malakoplakia of the urinary tract.

The authors report 4 cases of urinary tract malakoplakia. This rare disease of unknown etiopathogenesis can present with a benign character in the bladder, but when the upper urinary tract is affected, loss of renal function can occur. Treatment aims to control the primary infection, as well as enhance intracellular bactericidal activity, which seems to be compromised in these cases. Cytoreductive surgery may be indicated when this treatment fails.

Child↗
PubMed1986

Retroperitoneal fibrosis: an alternative therapy.

A case of retroperitoneal fibrosis satisfactorily treated with indwelling double J catheters is presented. This method, although reserved for special cases, is an adequate alternative treatment as it allows efficient long-term drainage of kidneys without aggressive surgical dissection of ureters.

Catheters, Indwelling↗
PubMed1985

Prolapsed ureterocele.

Although rare, the prolapsed ureterocele constitutes a urologic emergency that can rapidly evolve to severe conditions due to congestion and necrosis, and to obstruction of the urinary tract. A simple external resection resolves the emergency, allowing a postoperative investigation of the whole urinary tract to be performed, in order to adequately prepare urinary reconstruction.

Diagnosis, Differential↗
PubMed1984

Keratinizing squamous metaplasia of the upper urinary tract.

We report a case of squamous keratinizing metaplasia of the upper urinary tract. This benign pathology is very rare and difficult do differentiate from other space occupying lesions of the upper urinary tract. Its aetiopathogenesis is still not well understood, but whenever early diagnosis is made, conservative treatment can be employed.

Adult↗
PubMed1984

Vesical haemangioma. Report of two cases.

Two cases of vesical haemangioma and a review of the literature are presented. In one of the cases association with cutaneous "Blue Rubber Bleb Nevus" has been found. Vesical haemangioma is a benign tumour, probably of congenital origin, that occurs in young patients. The first symptom is generally haematuria, and diagnosis is confirmed by cystoscopy. The treatment of choice is partial cystectomy, and the most common histologic form is cavernous haemangioma.

Adult↗
PubMed1980

Ureteral endometriosis.

The authors present two cases of ureteral endometriosis. Urinary tract endometriosis has been frequently described affecting mainly the bladder. In the ureter, it is a rare pathology, of difficult identification. Treatment aims at ureteral disobstruction together with eradication of endometrial foci. This is accomplished by surgical, radiotherapeutic and chemotherapeutic means.

Adult↗
PubMed1980

Renovascular hypertension in children.

Due to better methods of diagnosis, an increasing number of children with renovascular hypertension are being discovered. The disease itself has variable clinical manifestations, and an adequate laboratorial workup, including arteriography and renin assays, is mandatory in suspected cases. Treatment depends on the prognostic values of the renin assays and surgery cures 80% of the patients, either by nephrectomy or by revascularization techniques. Among these, renal autotransplantation gives better exposure of the operative field, and therefore better results. In most cases, systemic infection seems to be the main cause of the inflammatory reaction within the arterial wall that causes obstruction.

Adolescent↗
PubMed1978

Cavernospongiosum shunt in management of priapism: is it a reliable method?

The efficiency of cavernospongiosum shunt in the management of priapism was evaluated in 10 patients. Technical details such as the "Z" perineal incision and the opening followed by closure of the contralateral corpus cavernosum, at the time of corpora evacuation, can improve the local exposure and permits a more complete drainage of the corpus cavernosum, but did not improve our results when they were compared with other techniques for treatment of priapism. Penile flaccidity and preservation of sexual potency occurred in 6 (60%) and 5 (50%) patients, respectively, and no surgical complications were observed. Immediate penile flaccidity and regaining of physiologic erection were, however, not complete even in the successfully treated patients. The cavernospongiosum shunt does not seem to represent the definitive form of treating priapism. New knowledge about mechanisms involved in priapism has to be obtained, in order to improve the approach and the prognosis of this disabling condition.

Adolescent↗
PubMed1978

Pelvic neurilemmoma.

A rare case of benign pelvic neurilemmoma with bladder infiltration and ureteral obstruction is presented. This neurally originated tumor may occur anywhere in the body, but involvement of the urinary tract is rare. Management depends upon location and other clinical findings, and in this case, since complete removal was impossible, urinary derivation was employed as a palliative treatment.

Female↗
PubMed1977

Traumatic rupture of the corpora cavernosa.

Treatment of penile fracture, due to the low number of cases, still lacks adequate documentation. The authors present two cases of such pathology, which were treated conservatively, and presented penile deformities in the late follow up. Both conservative and surgical management are discussed; since surgery in these cases has low mortality and clinical treatment can be followed by various sequelae, the authors favour the former, stressing that it is mandatory in cases with urinary obstruction, progressive infiltration of cutaneous laceration.

Adult↗
PubMedDate not supplied

Pheochromocytoma treated by laparoscopic surgery.

OBJECTIVE: To evaluate the results of the laparoscopic technique in the treatment of adrenal pheochromocytoma. METHOD: Ten patients, 7 men and 3 women, between 10 and 67 years of age (mean 48) with pheochromocytoma underwent transperitoneal laparoscopic adrenalectomy and were evaluated retrospectively, based on clinical, laboratory, and pathological diagnosis. In all cases there was a solid unilateral adrenal tumor, 5 on the left side and 5 on the right side, whose greater diameter varied from 7 to 80 mm (mean 32). Nine of the 10 patients were chronically hypertensive or had already had hypertensive crises. One patient was normotensive, but presented metabolic alterations suggestive of adrenergic hyperfunction. RESULTS: No deaths occurred in this series. There were two (20%) conversions to open surgery, one due to venous bleeding and one due to the difficulty of dissection behind the vena cava in a patient presenting a partially retro-caval tumor. Surgical time in the 8 non-converted cases ranged from 70 to 215 minutes (mean 136). One patient (10%) received blood transfusion, and another (10%) presented two complications - acute renal failure and a subcutaneous infection. Both had been converted to open surgery. None of the non-converted cases was transfused or presented complications. Hospital discharge occurred between the 2nd and 11th post-operative day (mean 3). The pathological exam of the surgical specimens confirmed the diagnoses of pheochromocytoma in all 10 cases, one of them associated with an aldosterone-producing cortical tumor. CONCLUSIONS: Laparoscopic adrenalectomy for selected patients presenting pheochromocytoma is feasible and provides good results.

Adolescent↗
PubMedDate not supplied

[Vesicoureteral reflux in children].

The association between vesicoureteral reflux and urinary tract infection represents a significant threat to the kidney, in the form of pyelonephritic scarring. The physiopathologic events that allow the upward migration of bacteria and their inoculation in the renal tissue, causing irreversible damage if not adequately treated, are reasonably understood. Reflux nephropathy is a major cause of childhood hypertension and renal insufficiency. Early diagnosis of reflux, and identification of the pyelonephritic aggression are important for successful therapy. Long-term chemoprophylaxis,to prevent urinary tract infection and renal scarring is the adequate form of treating low-grade vesicoureteric reflux, since spontaneous cure is expected in most of these cases. Although the same approach can be employed in high-grade reflux, surgery is a favorable alternative, with high rates of primary success,reducing the need of long-term medication and the exposure of the kidney to recurring pyelonephritic aggression. The retrograde flow of urine from the bladder to the upper urinary tract is an abnormal situation in the human being, known as vesicoureteral reflux (VUR). It results either from an intrinsic anatomical deficiency of the vesicoureteral junction or from an increased bladder pressure, due to mechanical or dysfunctional vesicourethral obstruction. The recognition of the association between VUR, urinary tract infection (UTI) and renal scars has led to an increased study of this disease in the last two decades.

English Abstract↗