Biomedical subjects
Publications and source records attributed to C Chapron.
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Partial cystectomy is in the great majority of the cases the treatment of choice for patients with bladder endometriosis. The aim is to assess the methods, indications and results of operative laparoscopy for patients presenting with bladder endometriosis. We perform a descriptive retrospective study of 13 cases. All patients presenting with bladder endometriosis infiltrating the bladder muscularis between January 1, 1993 and June 30, 1998 were included in this series. It was possible to treat bladder endometriosis in all the patients by performing a laparoscopic partial cystectomy. With an average follow-up of 29.3 +/- 24.6 months (range 4-77) the results are satisfactory. Neither peri- nor postoperative complications were observed. The patients experienced an improvement in their condition, with complete disappearance of the urinary symptoms in every case. No recurrence of the functional urological symptoms occurred. Provided the surgeons are skilled and the lesions require no ureteral reimplantation, operative laparoscopy is a valid alternative to laparotomy for partial cystectomy.
Operative laparoscopy is currently the best treatment for pregnancy (EP). As with laparotomy, laparoscopic treatment of EP can be either conservative (salpingotomy or radical (salpingectomy). After conservative laparoscopic treatment, failures are diagnosed by monitoring the drop in beta-hCG levels. Fertility results after laparoscopic treatment of EP are comparable with those observed after similar treatment by laparotomy. Better knowledge o the risk factors of EP, development of hCG assays using serum progesterone and high resolution sonography using vaginal probes allow early diagnosis of EP and a nonsurgical approach in more than 30% of cases. When inclusion criteria are strict, methotrexate administered by local injection or systemically (1mg/kg) in a single dose or in combination with mifepristone gives a 90 to 95% success rate. Whatever treatment protocol is used, fertility prognosis after EP is not correlated to the features of EP but depends mainly on patient age and past history.
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UNLABELLED: Deep pelvic endometriosis may lead to severe pain, the treatment of which may require complete surgical resection of lesions. Digestive infiltration is a difficult therapeutic problem. Preoperative diagnosis is difficult and digestive infiltration may remain unknown with incomplete resection and sometimes repeated surgery. Both magnetic resonance imaging (MRI) and endoscopic ultrasonography are able to detect rectosigmoid infiltration but their usefulness in the preoperative staging is still to be evaluated. The aim of this work was to evaluate and compare both techniques in the preoperative detection of deep pelvic endometriosis, particularly digestive infiltration. PATIENTS AND METHODS: From 1996 to 1998, 48 women with painful deep pelvic endometriosis had preoperative imaging exploration with endoscopic ultrasonography and MRI, and were operated on in order to attempt complete endometriosis resection. Patients were proposed for laparoscopic resection if endoscopic ultrasonography and/or MRI did not reveal digestive infiltration or for open resection if endoscopic ultrasonography and/or MRI were positive for digestive infiltration. RESULTS: Endoscopic ultrasonography and/or MRI led to suspicion of digestive endometriosis in 16 patients. Surgical resection was performed in 12 and digestive wall invasion was histologically demonstrated. At final follow-up, all patients had a dramatic decrease of their symptoms. The remaining 4 patients refused digestive resection and had only laparoscopic gynecologic resection. Infiltration although not histologically proven was very likely both on operative findings and clinical evolution. Digestive infiltration was preoperatively excluded in the 32 other patients. All had a laparoscopic treatment without digestive resection and pain diminished in all patients. In the 12 patients group who had digestive resection, digestive infiltration was correctly diagnosed by endoscopic ultrasonography in all cases (no false negative) whereas MRI, even with the use of endocoil antenna, led to correct diagnosis in 8 out of 12 cases. When endoscopic ultrasonography was negative for digestive infiltration, laparoscopic resection of lesions at surgery appeared complete in all cases. For the 16 patients with presumed digestive infiltration, sensitivity of endoscopic ultrasonography and MRI was 100 and 75% respectively, with a 100% specificity in both cases. MRI appeared very accurate for the detection of ovarian endometriotic locations. MRI was more sensitive but less specific than endoscopic ultrasonography for the diagnosis of isolated endometriotic recto-vaginal septum and utero-sacral ligaments lesions. CONCLUSION: Endoscopic ultrasonography was the best technique for the diagnosis of digestive endometriotic infiltration, which complicates the therapeutic strategy. MRI, however, allows more complete staging of other pelvic endometriotic lesions.
The treatment of first intention for endometriosis must be surgery. In cases of infertility the surgical treatment of choice is laparoscopic surgery, maybe in conjunction with the medical treatment and possibly followed-up by a second-look. When there is pelvic pain, the treatment relies on complete exeresis of the endometriotic lesions. In this context, laparoscopic surgery is as efficient as laparotomy for dealing with ovarian endometriomas, deep endometriosis infiltrating the uterosacral ligaments, the rectovaginal septum and the bladder. However, in the majority of cases bowel endometriosis is still an indication to operate by laparotomy.
STUDY OBJECTIVE: To describe and assess the efficacy of laparoscopic surgical treatment for patients with pain and deep endometriosis located on the uterosacral ligaments. DESIGN: Retrospective analysis (Canadian Task Force classification II-2). SETTING: University-affiliated hospital. PATIENTS: One hundred ten consecutive women with deep endometriosis infiltrating uterosacral ligaments. INTERVENTION: Operative laparoscopic management of endometriosis. MEASUREMENTS AND MAIN RESULTS: Improvement was reported in 82.3% (70/85) of patients with severe dysmenorrhea and was considered satisfactory in 82.8% (58/70). Improvement also occurred in 88.2% (75/85) of women with deep dyspareunia, and was considered satisfactory in 88.0% (66/75). CONCLUSION: Provided the surgeon is highly skilled in laparoscopy, operative laparoscopy is efficient for the treatment of painful symptoms related to deep endometriosis infiltrating uterosacral ligaments. (J Am Assoc Gynecol Laparosc 6(1):31-37, 1999)
The objective of this study was to assess the techniques by which hysterectomies are carried out and to determine the rate of total laparoscopic hysterectomy (TLH). A transversal multicentre study was conducted in 23 gynaecology and obstetrics departments of French University Hospital Centres. The study population comprised only those patients for whom hysterectomy was indicated for benign disease without genital prolapse or urinary stress incontinence. Whereas the rates of performance of hysterectomy by laparotomy and by the vaginal route are comparable [respectively 40.0% (94 patients) and 46.8% (110 patients)], the rate of performance of TLH is only 13.2% (31 patients). All 23 centres (100%) carried out hysterectomy by laparotomy and 21 centres (91.3%) carried out vaginal hysterectomy; however, only nine centres (39.1%) carried out TLH. Only seven centres (30.4%) performed all three types of operation. Of the eight centres whose rate of vaginal hysterectomy was >60%, six (75%) did not carry out TLH. The study suggests that the usage of the TLH technique appears to be limited. The extent of surgical training is a major factor in the choice of technique for hysterectomy.
The aim of this study was to evaluate fertility outcome after laparoscopic management of deep endometriosis infiltrating the uterosacral ligaments (USL). From January 1993 to December 1996, 30 patients who presented with no other infertility factors were treated using laparoscopic surgery. The overall rate of intrauterine pregnancy (IUP) was 50.0% (15 patients). Only one of these 15 pregnancies was obtained using in-vitro fertilization techniques (IVF). The cumulative IUP rate for the 14 pregnancies which occurred spontaneously was 48.5% at 12 months (95% confidence interval 28.3-68.7). The rate of spontaneous pregnancies was not significantly correlated with the revised American Fertility Society (rAFS) classification. The rate of IUP was 47.0% (eight cases) for patients with stage I or II endometriosis and 46.1% (six cases) for the patients presenting stage III or IV endometriosis (not significant). These encouraging preliminary results show that in a context of infertility it is reasonable to associate classic treatment for endometriosis (e.g. lysis, i.p. cystectomy, biopolar coagulation of superficial peritoneal endometriotic lesions) with resection of deep endometriotic lesions infiltrating the USL. Apart from the benefit with respect to the pain symptoms from which these patients suffer, it is possible to use laparoscopic surgery with substantial retroperitoneal dissection and enable half of the patients to become pregnant. These results also raise the question of the influence of deep endometriotic lesions on infertility.
A retrospective case review study was carried out on gastrointestinal injuries which occur during gynaecological laparoscopy. Fifty-six patients with 62 gastrointestinal injuries were identified. One-third of the complications (32.2%) occurred during the installation phase for laparoscopy. Four of the six complications attributed to electrosurgery were secondary to the use of monopolar coagulation. Diagnosis of these gastrointestinal injuries was made during surgery in only 20 patients (35.7%). The mean time before diagnosis was 4.0 +/- 5.4 (range 0-23) days. Treatment of these complications was performed by laparoscopic surgery in 16.1% of cases. Prevention relies on the surgeon's experience, strict observance of the safety rules, perfect familiarity with the physical properties of the instruments used, systematic use of bowel preparation for patients presenting a risk of bowel complications, systematic supervision of the route taken by the trocars, meticulous inspection on completion of surgery of all areas where bowel adhesiolysis has been used and, in case of any doubt, tests for leakage involving the rectosigmoid. For patients with a risk of bowel complications, the creation of a pneumoperitoneum and performing a mini laparoscopy in the left hypochondrium can be the judicious option.
The aim of this study was to describe magnetic resonance (MR) imaging findings in histopathologically proven deep endometriosis infiltrating the uterosacral ligaments, the pouch of Douglas, the rectum or the bladder. Twenty patients presenting with a clinical suspicion of deep endometriosis underwent preoperative MR imaging. Sagittal and axial fast T2- and axial T1-weighted spin echo MR sequences were performed. Four patients had post-contrast images. MR results, including morphology and signal intensity of each lesion, were compared to intraoperative gross appearance and histopathology. Histopathology diagnosed 24 lesions of deep endometriosis in the uterosacral ligaments (n = 12), the pouch of Douglas (n = 2), the rectum (n = 3), the bladder (n = 7). Uterosacral ligaments with deep endometriosis were statistically different from normal uterosacral ligaments for proximal nodularity (P = 0.001). There was no difference in signal intensity between normal and abnormal uterosacral ligaments. Contrast-enhanced SE images in four patients with detrusor invasion showed an interruption of the hypointense detrusor by the enhancing bladder endometriosis. Rectal endometriosis was missed in two of three patients and showed non-specific rectal wall thickening in one patient. It is concluded that MR imaging can diagnose deep endometriosis of uterosacral ligaments, the bladder and the pouch of Douglas, but lacks sensitivity in detecting rectal endometriosis without rectal distension.
The distributions of the mRNAs for estrogen receptors (ERalpha and ERbeta) and their binding properties in myometria of pregnant and nonpregnant women and in leiomyoma were studied. RT-PCR analysis indicated that the term pregnancy myometria had little ERalpha mRNA, whereas the amounts of ERbeta mRNAs in pregnant or nonpregnant myometria appeared to be similar. Both ERalpha and ERbeta mRNA were greater in certain leiomyoma than in normal nonpregnant myometria. The binding kinetics revealed that two specific binding sites (with high or low affinity) for 17beta-estradiol were present in the nonpregnant myometrium. Only the low-affinity binding sites were detectable in late-pregnancy myometria and in leiomyoma, and their capacities were increased two- to threefold (P < 0.001) in leiomyoma. The pregnancy- and leiomyoma-related changes in myometrial ER status, especially the low concentration of ERalpha mRNA and the lack of high-affinity ER in pregnant women, plus the increased ERalpha and ERbeta mRNAs and the increased low-affinity ER in some leiomyoma, suggest that the redistribution of ER subtypes is associated with the pathological and/or normal growth of the myometrium.
The endothelins (ET1, ET2, ET3) are a family of peptides that exert vasoactive and mitogenic effects. ETs bind to at least two subtypes of receptors: the ETA subtype is ET1 selective whereas the ETB subtype binds ET1, ET2 and ET3. By RT-PCR, we detected ETA receptor mRNA and ETB receptor mRNA in leiomyoma and in homologous myometrium distal from the tumor. Despite the presence of four spliced variants of ETA receptors, we identified a single class of ETA-binding sites. The level of ETB receptor mRNA was found to be higher in myometrium versus leiomyomas. Using complementary pharmacologic approach, we demonstrated the predominance of ETA receptors in normal myometrium (75% of total receptors). Both ETA and ETB transcripts coexist in leiomyomas, but we have reported only ETA binding sites. Because of growth properties of ET1, we suggest a role for this peptide in the tumoral development of human uterine smooth muscle.
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BACKGROUND: To assess the methods, indications and results of operative laparoscopy for patients presenting with bladder endometriosis. METHODS: Descriptive retrospective study. All the patients presenting with bladder endometriosis infiltrating the bladder muscularis between January 1, 1993 and June 30, 1998 were included in this series. RESULTS: It was possible to treat bladder endometriosis in all the patients by performing a laparoscopic partial cystectomy. With an average follow-up of 31.6 months (range 6-61) the results are satisfactory. Neither per- nor postoperative complications were observed. The patients experienced an improvement in their condition, with complete disappearance of the urinary symptoms in every case. No recurrence of the functional urological symptoms occurred. CONCLUSIONS: Provided the surgeons are skilled and the lesions require no ureteral reimplantation, operative laparoscopy is a valid alternative to laparotomy for partial cystectomy.
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