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Biomedical subjects

Serge Uzan

Publications and source records attributed to Serge Uzan.

At least 19 recordsLinked to original sources
PubMed2006

Ductal carcinoma in situ: value of sentinel lymph node biopsy.

BACKGROUND: Ductal carcinoma in situ (DCIS) represents about 20% of newly diagnosed breast carcinomas. Axillary metastasis is often related to undiagnosed DCIS with microinvasion (DCISM). The aim of this study was to confirm the interest of sentinel lymph node (SLN) biopsy in extensive DCIS. METHODS: Patients with a diagnosis of DCIS or DCISM and axillary lymph node evaluation were selected. Surgical treatment included SLN biopsy and/or axillary lymph node dissection (ALND). Serial sections were stained with hematoxylin and eosin (H&E) and with an immunohistochemical (IHC) method. When a micrometastasis was found, the breast specimen was revised searching for occult microinvasion. RESULTS: Hundred and forty patients with initial DCIS were enrolled in the study. Node metastasis was identified in 9 patients (7%) of the 128 patients with DCIS and DCISM. At final histology, 4 (10%) of the 39 patients with pure DCIS and SLN biopsy and 1 (7%) of the 14 patients with DCISM and SLN biopsy had axillary micrometastasis. Four of the 12 patients upstaged to invasive carcinoma had metastatic SLNs. CONCLUSIONS: Sentinel lymph node biopsy is valuable in patients with diffuse DCIS or DCISM who are scheduled for mastectomy in order to search for axillary micrometastases and occult breast microinvasion.

Axilla↗
PubMed2006

MR imaging compared with intraoperative frozen-section examination for the diagnosis of adnexal tumors; correlation with final histology.

The aim was to compare the accuracy of magnetic resonance imaging (MRI) and intraoperative consultation (IC) for the diagnosis of adnexal masses, with reference to final histology. MRI was performed in 136 women with sonographically indeterminate adnexal masses. IC included macroscopic and frozen-section examination. Macroscopic examination and MRI determined size, nature, and presence of vegetations or solid portions within masses. All masses were characterized as benign or malignant according to previously published MR imaging and histopathologic criteria. Sensitivities, specificities, and predictive values for the diagnosis of malignancy of MRI and IC were assessed. Histology revealed 168 adnexal masses (99 benign, 23 borderline and 46 invasive). Frozen sections were examined in 151 cases. Among the 151 adnexal masses studied by both MRI and IC, respective sensitivities, specificities, positive and predictive values of both methods for the diagnosis of malignancy were 89.7% and 84.5%, 91.4% and 100%, 86.7% and 100%, and 93.4% and 91.3%. Sensitivities of MR imaging and frozen section for the diagnosis of serous versus mucinous borderline tumors were 33.3% and 93.3%, and 62.5% and 12.5%, respectively. MRI is less accurate than IC for characterizing adnexal masses. However, MRI may increase the relevance of IC for borderline mucinous tumors.

Adnexa Uteri↗
PubMed2006

Long-term results of hysteroscopic myomectomy in 235 patients.

OBJECTIVE: To assess the efficacy of transcervical resection of submucous fibroids according to type and size. MATERIALS AND METHODS: Retrospective follow-up of 235 women with submucous fibroids at outpatient hysteroscopy who underwent a hysteroscopic transcervical resection. The main indications were the abnormal uterine bleeding and fertility problems. Thirty-seven percent of patients had an associated endometrial ablation and 32% had a polyp resection. Fifty-one percent of women were menopausal. In cases of incomplete resection a repeat procedure was offered. RESULTS: Intra-operative complications were rare (2.6%) and there was no major complication. Eighty-four percent of cases were followed-up. The median follow-up was 40 months (range 18-66 months). The procedure was classed as a success in 94.4% of patients. Among the cases that were classed as a failure, four patients had a repeated hysteroscopic procedure, three patients had a subsequent hysterectomy and four patients presented with abnormal uterine bleeding at follow-up. CONCLUSION: The hysteroscopic transcervical resection of submucous fibroids is a safe and highly effective long-term therapy for carefully selected women presenting with abnormal uterine bleeding and fertility problems. It produces satisfactory long-term results with few complications.

Adult↗
PubMed2006

Is planned vaginal delivery for breech presentation at term still an option? Results of an observational prospective survey in France and Belgium.

OBJECTIVE: A large trial published in 2000 concluded that planned vaginal delivery of term breech births is associated with high neonatal risks. Because the obstetric practices in that study differed from those in countries where planned vaginal delivery is still common, we conducted an observational prospective study to describe neonatal outcome according to the planned mode of delivery for term breech births in 2 such countries. STUDY DESIGN: Observational prospective study with an intent-to-treat analysis to compare the groups for which cesarean and vaginal deliveries were planned. Associations between the outcome and planned mode of delivery were controlled for confounding by multivariate analysis. The main outcome measure was a variable that combined fetal and neonatal mortality and severe neonatal morbidity. The study population consisted of 8105 pregnant women delivering singleton fetuses in breech presentation at term in 138 French and 36 Belgian maternity units. RESULTS: Cesarean delivery was planned for 5579 women (68.8%) and vaginal delivery for 2526 (31.2%). Of the women with planned vaginal deliveries, 1796 delivered vaginally (71.0%). The rate of the combined neonatal outcome measure was low in the overall population (1.59%; 95% CI [1.33-1.89]) and in the planned vaginal delivery group (1.60%; 95% CI [1.14-2.17]). It did not differ significantly between the planned vaginal and cesarean delivery groups (unadjusted odds ratio = 1.10, 95% CI [0.75-1.61]), even after controlling for confounding variables (adjusted odds ratio = 1.40, 95% CI [0.89-2.23]). CONCLUSION: In places where planned vaginal delivery is a common practice and when strict criteria are met before and during labor, planned vaginal delivery of singleton fetuses in breech presentation at term remains a safe option that can be offered to women.

Adult↗
PubMed2005

Subjective morbidity and quality of life after sentinel node biopsy and axillary lymph node dissection for breast cancer.

BACKGROUND AND OBJECTIVES: Sentinel node (SN) biopsy is a minimally invasive surgical method for axillary staging in patients with breast cancer. The aim of this study was to evaluate mid-term morbidity after SN biopsy and axillary lymph node (ALN) dissection in patients with breast cancer receiving breast-sparing treatment, and to determine its impact on quality of life (QOL). METHODS: One hundred fifteen patients with breast cancer underwent breast-conserving treatment with SN biopsy alone (Group 1: n = 54), ALN dissection with or without SN biopsy (Group 2: n = 51), or SN biopsy followed by later ALN dissection (Group 3: n = 10). RESULTS: The mean post-operative follow-up was 20.3 months (range: 10-31 months) in Group 1, 24.3 months (range: 10-33 months) in Group 2, and 19.1 months (range: 12-28 months) in Group 3. Arm-shoulder pain was reported by 21.2% of patients in Group 1, 52.9% in Group 2, and 60% in Group 3 (P = 0.002). An arm swelling sensation was reported by 0% of patients in Group 1, 21.6% in Group 2, and 10% in Group 3. Dysesthesias were reported by 5.7% of patients in Group 1, 51% in Group 2, and 50% in Group 3 (P < 0.001). The mean global QOL self-rating score was 7.6 in Group 1, 7.6 in Group 2, and 7.7 in Group 3 (no significant difference). CONCLUSIONS: SN biopsy is associated with significantly lower mid-term morbidity than ALN dissection.

Adult↗
PubMed2005

Site-select procedure for non-palpable breast lesions: feasibility study with a 15-mm cannula.

BACKGROUND: As screening mammography becomes more commonplace, increasing numbers of non-palpable breast lesions are being found. The aim of this prospective study was to evaluate the feasibility, utility, and patient-perceived cosmesis and satisfaction of the Site-Select procedure in women with non-palpable breast lesions. METHODS: Thirty-two consecutive patients underwent the Site-Select procedure, performed under local anesthesia by the same surgeon. The Site-Select procedure was included in a protocol for small (<15 mm) breast imaging reporting and data system (BI-RADS) grade 3 and 4 breast lesions. The pathologic diagnosis, specimen size, length of the procedure, perioperative and postoperative complications, subsequent interventions, patient satisfaction, and esthetic results were documented. RESULTS: The Site-Select procedure was successful in all 32 patients (mean age, 56 years; range, 44-79 years). Mammographic lesions corresponded to microcalcifications in 21 patients, microcalcifications with architectural distortion in 4 patients, microcalcifications with nodules in 2 patients, and architectural distortion alone in 5 patients. The Site-Select procedure was used on an outpatient basis. Carcinomas were diagnosed in five patients (15.6%). No complications occurred during the procedure. The only postoperative complication was a hematoma, which did not require surgical drainage. No missed cancers were detected by follow-up mammography (mean 8 months later; range, 1-18 months). The esthetic results and patient satisfaction were excellent. CONCLUSIONS: This study demonstrates that the Site-Select procedure is an effective diagnostic method in selected cases. It has a low complication rate, high patient satisfaction, and excellent esthetic results.

Adult↗
PubMed2005

An axilla scoring system to predict non-sentinel lymph node status in breast cancer patients with sentinel lymph node involvement.

BACKGROUND: Axillary lymph node dissection (ALND) is the current standard of care for breast cancer patients with sentinel lymph node (SN) involvement. However, the SN is the only involved axillary node in a significant proportion of these patients. Here we examined factors predictive of non-SN involvement in patients with a metastatic SN, in order to develop a scoring system for predicting non-SN involvement. MATERIALS AND METHODS: This study was based on a prospective database of 337 patients who underwent SN biopsy for breast cancer, of whom 81 (24%) were SN-positive; we examined factors predictive of non SN involvement in the 71 of these 81 women who underwent complementary ALND. All clinical and histological criteria were recorded and analysed according to non-SN status, by using Chi-2 analysis, Student's t-test, and multivariate logistic regression. RESULTS: Univariate analysis showed a significant association between non-SN involvement and histological primary tumor size (p=0.0001), SN macrometastasis (p=0.01), the method used to detect SN metastasis (H&E versus immunohistochemistry) (p=0.03), the number of positive SNs (p=0.049), the proportion of involved SNs among all identified SNs (p=0.0001) and lymphovascular invasion (p=0.006). Histological primary tumor size (p=0.006), SN macrometastasis (p=0.02) and the proportion of involved SNs among all identified SNs (p=0.03) remained significantly associated with non-SN status in multivariate analysis. Based on the multivariate analysis, we developed an axilla scoring system (range 0-7) to predict the likelihood of non-SN metastasis in breast cancer patients with SN involvement. CONCLUSION: In patients with invasive breast cancer and a positive SN, histological primary tumor size, the size of SN metastases, and the proportion of involved SNs among all identified SNs were independently predictive of non-SN involvement.

Adult↗
PubMed2005

Use of mifepristone to ripen the cervix and induce labor in term pregnancies.

OBJECTIVE: This study was undertaken to determine the efficacy of mifepristone for ripening the cervix and inducing labor in term pregnancies. STUDY DESIGN: In a double-blind placebo-controlled dose-finding study, 346 women received 50, 100, 200, 400, or 600 mg of mifepristone or placebo. The main endpoint for efficacy was the number of patients in whom labor occurred between 12 and 45 and 54 hours after treatment or who had a Bishop score 6 or greater. Maternal and fetal tolerability was also studied. RESULTS: No significant efficacy was observed whatever the dose of mifepristone. Mifepristone was well tolerated by the mother and fetus. CONCLUSION: Mifepristone, at doses up to 600 mg, does not induce labor within 54 hours in patients with unfavourable cervical status.

Abortifacient Agents, Steroidal↗
PubMed2005

Bilateral tubal pregnancy after natural conception: a case report.

BACKGROUND: Bilateral tubal pregnancy is very rare and usually follows ovulation stimulation. CASE: A 36-year-old woman with acute pelvic pain underwent emergency laparoscopy for suspected left ruptured tubal pregnancy. Bilateral hematosalpinx with a ruptured left tubal pregnancy and active bleeding from the right fallopian tube was noted during surgery, and bilateral salpingectomy was performed by laparoscopy. Pathologic examination of the left tube confirmed the presence of conception products and trophoblastic tissue. The right salpingectomy specimen contained some trophoblastic tissue resembling an earlier tubal pregnancy encased in a cyst. CONCLUSION: This was a rare case of spontaneous bilateral tubal pregnancy after conception at different times. The explanation of the presentation is uncertain. Laparoscopy remains the cornerstone of diagnosis and treatment in the majority of women with a tubal pregnancy; this is especially true in complex cases, such as bilateral tubal pregnancy.

Adult↗
PubMed2004

Doppler and immunohistochemical evaluation of decidual spiral arteries in early pregnancy.

OBJECTIVE: The purpose of this study was to estimate spiral artery subchorionic flow at 8-11 gestational weeks (GW) by Doppler ultrasound and then to analyze these vessels in the decidua basalis using histologic, morphometric and immunohistochemical analyses. METHODS: Subchorionic spiral arteries were evaluated in 5 women scheduled for aspiration at 8-11 GW. Flow velocity waveforms were sought using color and pulsed Doppler, and the diastolic/systolic (D/S) index was calculated. Transcervical biopsy specimens and aspiration products were thoroughly examined to investigate the structure of the spiral artery at the implantation site using cytotrophoblastic and arterial smooth muscle cell immunohistochemical markers (anti-cytokeratin 7 and anti-actin monoclonal antibodies). Spiral artery cross-sectional inner areas were measured and compared with the D/S index in each case. RESULTS: Low-impedance pulsatile flow could be detected below the trophoblastic ring in all cases. Complete obstruction of a spiral artery lumen was never observed and cytotrophoblastic cells were incorporated into the vessel wall starting from the perivascular cuff. CONCLUSION: Both techniques evidenced that decidual spiral arteries in the placental bed are not completely obstructed at 8-11 GW.

Actins↗
PubMed2004

Pathophysiology of preeclampsia: links with implantation disorders.

The phenomenon of implantation anchors the embryo into the uterine wall and produces a hemochorial placenta that maintains the pregnancy and fetal growth. Implantation and placentation are intimately linked and cannot be dissociated either in time or in space. Preeclampsia is characterized by hypertension and proteinuria. It is secondary to an anomaly of the invasion of the uterine spiral arteries by extra-villous cytotrophoblast cells, associated with local disruptions of vascular tone, of immunological balance and inflammatory status, and sometimes with genetic predispositions. Preeclampsia is a disease of early pregnancy, a form of incomplete spontaneous abortion, but is expressed late in pregnancy. Aspirin may play a favorable role in implantation which is related to the genesis of preeclampsia and some cases of intra-uterine growth restriction. The most important points in obtaining a preventive effect from low-dose aspirin during the pregnancy are early treatment (before 13 weeks of gestation) and the prescription of a sufficient dose (more than 100 mg per day).

Anti-Inflammatory Agents, Non-Steroidal↗
PubMed2004

Deep pelvic endometriosis: MR imaging for diagnosis and prediction of extension of disease.

PURPOSE: To prospectively evaluate the accuracy of magnetic resonance (MR) imaging for the preoperative diagnosis of deep pelvic endometriosis and extension of the disease. MATERIALS AND METHODS: One hundred ninety-five patients (mean age, 34.2 years; range, 20-71 years) who were suspected of having pelvic endometriosis were recruited at two institutions. Two experienced radiologists evaluated the MR images independently. Deep pelvic endometriosis was defined as implants or tissue masses that appeared as hypointense areas and/or hyperintense foci on T1- or T2-weighted MR images in the following locations: torus uterinus, uterosacral ligaments (USLs), vagina, rectovaginal septum, rectosigmoid, and bladder. MR imaging results were compared with surgical and pathologic findings. Sensitivity, specificity, predictive values, and accuracy of MR imaging for prediction of deep pelvic endometriosis were assessed. RESULTS: Pelvic endometriosis was confirmed at pathologic examination in 163 (83.6%) of 195 patients. Endometriomas, peritoneal lesions, and deep pelvic endometriosis were diagnosed on the basis of surgical findings, alone or combined with pathologic findings, in 111 (68.1%), 83 (50.9%), and 103 (63.2%) of 163 patients, respectively. Torus uterinus and USL were the most frequent sites of deep pelvic endometriosis. The sensitivity, specificity, positive and negative predictive values, and accuracy of MR imaging for deep pelvic endometriosis were 90.3% (93 of 103), 91% (84 of 92), 92.1% (93 of 101), 89% (84 of 94), and 90.8% (177 of 195), respectively. The sensitivity, specificity, and accuracy, respectively, of MR imaging for the diagnosis of endometriosis in specific sites were as follows: USL, 76% (57 of 75), 83.3% (100 of 120), and 80.5% (157 of 195); vagina, 76% (16 of 21), 95.4% (166 of 174), and 93.3% (182 of 195); rectovaginal septum, 80% (eight of 10), 97.8% (181 of 185), and 96.9% (189 of 195); rectosigmoid, 88% (53 of 60), 97.8% (132 of 135), and 94.9% (185 of 195); and bladder, 88% (14 of 16), 98.9% (177 of 179), and 97.9% (191 of 195). CONCLUSION: MR imaging demonstrates high accuracy in prediction of deep pelvic endometriosis in specific locations.

Adult↗
PubMed2004

Contralateral axillary sentinel lymph node drainage in breast cancer: a case report.

BACKGROUND: Since the introduction of sentinel node (SN) mapping in breast cancer, extra-axillary lymph node sites of breast tumor drainage are discovered in about one-quarter of cases, especially after intraparenchymal injection. In most such cases, an ipsilateral axillary SN is associated with an extra-axillary SN. Non visualization of ipsilateral axillary SN and extra-axillary SN drainage are often associated with an increased risk of axillary involvement. CASE: We report a case of contralateral axillary SN drainage on lymphoscintigraphy in a breast cancer patient with a history of bilateral reduction mammoplasty and no ipsilateral axillary lymph node involvement.

Aged↗
PubMed2004

Intraoperative imprint cytology of sentinel nodes in breast cancer.

BACKGROUND AND OBJECTIVES: Sentinel node (SN) biopsy is a new standard of care for axillary node staging in patients with early-stage, clinically node-negative breast cancer. A second operation can be avoided when the results are available intraoperatively. However, there is no standard intraoperative method for SN assessment. The aim of this study was to evaluate intraoperative imprint cytology (IC) for the detection of SN involvement in patients with early-stage breast cancer. METHODS: One hundred eighty-five consecutive patients with a breast tumor underwent SN biopsy with intraoperative IC. The SN was bisected and a touch preparation was made with a glass slide, on both sides of the cut. Permanent sections were evaluated with H&E and immunohistochemical staining. The IC results were compared with the final histologic results. RESULTS: The sensitivity, specificity, accuracy, and positive and negative predictive values of IC were 33.3, 78.4, 78.9, 90, and 77.5%, respectively. IC was more sensitive for macrometastases than for micrometastases. In the 118 patients studied after the learning phase, 9 patients with a positive SN by IC avoided a second operation. CONCLUSIONS: Intraoperative IC of SNs appears to be reasonably reliable in patients with breast cancer, permitting axillary dissection during the same surgical procedure when positive. In contrast, sensitivity for detection of micrometastases is low.

Adult↗