Eighteen centers took part in this prospective study into which 930 eligible patients were recruited. The selection criteria for admission were atypical bleeding after at least 6 months of postmenopausal amenorrhea, and absence of hormonal therapies for at least 6 months. The sonographic measurement of the maximum bi-endometrial thickness was made in a longitudinal plane. Sonographic measurements were always performed within 3 days prior to histological evaluation. In these patients the mean number of years from menopause (25-75th centile) was 6 (range 2-16). The prevalence of endometrial carcinoma was 11.5% and the prevalence of atrophy was 49.2%. The area under the receiver operator characteristic curves generated by sonographic thickness measurements reached the level of 85%, both for cancer and atrophy. The likelihood ratio for cancer, yielded by an endometrial thickness of < or = 4.0 mm, was 0.05, and for atrophy it was 7.1. This cut-off of > 4.0 mm yielded a sensitivity for the detection of cancer of 98% and a negative predictive value of 99%. The overall sensitivity and positive predictive value for atrophy achieved by this cut-off were 57.2% and 87.3%, respectively. A multivariate logistic model showed that age and body mass index were independent variables associated with a significantly higher risk of endometrial cancer. The post-test probabilities for cancer and atrophy were recalculated on the basis of the integration of age, body mass index and endometrial thickness. The estimated reduction of invasive procedures on the basis of this integration was 31%. Transvaginal sonographic measurement of endometrial thickness, integrated with individual risk factors, can help in the management of postmenopausal patients with atypical bleeding, with regard to either the need for histological evaluation in high risk cases, or the choice of possible expectant management. We have shown that an endometrial thickness of < or = 4.0 mm safely predicts endometrial atrophy and justifies expectant management when the patient understands the need for proper follow up. This could be achieved with a reduction in the use of invasive procedures without unwanted delay in cancer diagnosis.

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Objectives-To assess the potential of expectant management for simple ovarian cysts diagnosed by transabdominal or transvaginal ultrasonography. To compare the results of needle aspiration with those achieved with simple observation.Design-Randomised trial. Setting-Hospital department of obstetrics and gynaecology.Subjects-278 women with simple cysts randomly allocated to simple observation (143) or ultrasound guided fine needle aspiration (135) between 1990 and 1994.Main outcome measures-Resolution of cyst or development of malignancy.Results-After six months 269 were available for follow up. The rate of resolution was 46% (59/128) with aspiration and 44.6% (63/141) with observation. Only the diameter of the cyst (P<0.0001) was a significant independent prognostic factor for resolution in a multivariate analysis. Age and treatment had no significant effect. One woman was subsequently found to have borderline malignant changes on histopathological examination. Her cyst was detected by transabdominal ultrasonography.Conclusions-Expectant management for up to six months does not cause risks for the patients and allows spontaneous resolution in over a third of cases, avoiding the costs and risks of unnecessary surgery. Aspiration does not provide better results than simple observation IntroductionA large study performed in 1989 by Campbell et al on more than 5000 healthy women found that roughly 6% had adnexal masses, 90% of which were cystic tumours.' Grimes and Hughes reported that ovarian

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Objective To assess the clinical relevance of adnexal masses in pregnancy and the usefulness of ultrasound in their management. Design A prospective study on pregnancy complicated by adnexal masses. Setting Department of Obstetrics and Gynaecology in Italy.Population 6636 women with pregnancy in utero followed in our clinic from January 1996 to December 1999.Methods From 1996 to 1999, all ovarian cysts with a diameter exceeding 3 cm were prospectively recorded and followed. The management was expectant except in case of symptoms or suspected malignant features. Cysts suggestive of borderline tumours were treated expectantly. Main outcome measures Clinical relevance of adnexal masses in pregnancy, the outcome of these pregnancies and the usefulness of ultrasound examination in their management. Results We detected 82 cysts in 79 of 6636 women (1.2 in 100 term pregnancies). Sixty-eight women were asymptomatic at the time of diagnosis, whereas 11 (13.9%) were diagnosed because of pain. Diagnosis occurred in the first trimester for 57 cases and in the second or third trimester in 22 (27.8%). One-half of the cysts were simple and anechoic at ultrasound. Fifty-seven had a diameter not exceeding 5 cm. Forty-two cyst resolved in pregnancy without treatment. Three cysts required surgery within few days (torsion). One woman required laparotomy at the 37th week of gestation, due to torsion. When one case of termination was excluded, 78 women delivered at term (66 vaginally, 12 by caesarean section). Nineteen women underwent surgery after pregnancy. We recorded three Stage Ia borderline tumours, accounting for 3/82 cysts (3.6%) and 3/30 persisting masses (10%). Conclusions Ultrasound allows definition of ovarian cysts in pregnancy and this positively impacts on management. The incidence of cancer among persistent masses is lower than previously reported. Acute complications in stable cysts are extremely uncommon after the first trimester. An expectant management is successful in the majority of cases and should be considered more often. Routine removal of persistent cysts is not justified.

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