Biomedical subjects

J M Claude

Publications and source records attributed to J M Claude.

13 recordsLinked to original sources

PubMed1990

[Internal urethrotomy. Resection of urethral stricture (over 5 years follow-up)].

Since 1980, in addition to internal urethrotomy, the authors have used urethrotomy combined with endoscopic resection of the stricture. This method consists of a classical first stage of section of the stricture, but only at 11 o'clock and at 1 o'clock to leave a rail of midline fibrosis. The second stage consists of resection of this rail. The value of this approach consists of more effective excision of the fibro-inflammatory callus. Thirty-four patients treated by this method have a follow-up exceeding 5 years. This series was compared with a series of patients treated by internal urethrotomy alone (39 patients with a follow-up greater than 5 years). Very good results were obtained in 55% of cases versus 28% with internal urethrotomy alone. Poor results were obtained in 32% of cases versus 43%. Internal urethrotomy therefore appears to be more rapidly and more completely effective.

Dilatation↗

PubMed1988

[Voided urinary cytodiagnosis. Cyto-histologic comparison].

The authors report the results of a 4 year study of voided urinary cytology by cytocentrifugation. The findings were compared with those of histology. The sensitivity of the cytological diagnosis varies with the histological grade of the tumor. Grade 1 papillary tumors are not detectable with classical cytological criteria of malignancy. However they may be evoked if finer criteria are considered. Voided urinary cytology is efficient in the detection of grade 2 and grade 3 papillary tumors as well as dysplasia and in situ carcinoma in flat mucosa. The sensitivity of urinary voided cytology is remarkably improved by repeating the examination 3 successive times. This method detects tumors of the urinary bladder as well as those of the upper urinary tract. False positive results are possible, but may be avoided by knowing the clinical history and by repeated urinary cytology. Protocols are proposed for the diagnosis and follow-up of transitional cell tumors. Systematic screening of high risk subjects is also an important indication for voided urinary cytology, but we lack experience in this domain.

Carcinoma in Situ↗

PubMed1986

[Rigid ureteroscopy: a reliable, non-aggressive technic. Apropos of 51 cases treated for ureteral lithiasis].

The authors obtained 82% good results by using rigid ureteroscopy to treat a total of 55 calculi in a series of 51 patients and they propose the following therapeutic approach: calculi in the lumbar ureter are frequently difficult to reach (54% failures). There is no harm in gently trying to remove the stone by ureteroscopy which, in the event of failure, can be followed by percutaneous surgery or posterolumbar incision. Rigid ureteroscopy is easier and more reliable in the case of calculi in the iliac or pelvic ureter (7% failures) and the indications can be extended.

Endoscopy↗

PubMed1985

[Total prostatocystectomy followed by enterocystoplasty in the treatment of bladder neoplasms].

Bladder replacement enterocystoplasty in the treatment of bladder tumors provides the patient with maximum mictional comfort, and better protection of the kidneys than in the case of cutaneous urinary diversion. The remote carcinological results are satisfactory at over 60% nowadays at three years, against only 20%, seventeen years ago. The functional impact on continence is very good during the day but not yet satisfactory at night, but a sometimes lengthy re-education can help. The result on the upper urinary tract is still the delicate point in this technique, with the hope of an attenuation of the renal insufficiency thanks to the setting up of an antireflux process. However, the indications for this brilliant technique may be limited by the extension of the tumor and the fragility of the diasthesis.

Acute Kidney Injury↗

PubMed1979