Objective: To estimate the cumulative incidence of severe complications associated with genital chlamydia infection in the general female population. Methods: The Uppsala Women's Cohort Study was a retrospective population based cohort study in Sweden, linking laboratory, hospital, and population registers. We estimated the cumulative incidence of hospital diagnosed pelvic inflammatory disease, ectopic pregnancy, and infertility, and used multivariable regression models to estimate hazard ratios according to screening status. Results: We analysed complete data from 43 715 women in Uppsala aged 15-24 years between January 1985 and December 1989. Follow up until the end of 1999 included 709 000 woman years and 3025 events. The cumulative incidence of pelvic inflammatory disease by age 35 years was 3.9% (95% CI 3.7% to 4.0%) overall: 5.6% (4.7% to 6.7%) in women who ever tested positive for chlamydia, 4.0% (3.7% to 4.4%) in those with negative tests, and 2.9% (2.7% to 3.2%) in those who were never screened. The corresponding figures were: for ectopic pregnancy, 2.3% (2.2% to 2.5%) overall, 2.7% (2.1% to 3.5%), 2.0% (1.8% to 2.3%), and 1.9% (1.7% to 2.1%); and for infertility, 4.1% (3.9% to 4.3%) overall, 6.7% (5.7% to 7.9%), 4.7% (4.4% to 5.1%), and 3.1% (2.8% to 3.3%). Low educational attainment was strongly associated with the development of all outcomes. Conclusions: The incidence of severe chlamydia associated complications estimated from ours, and other population based studies, was lower than expected. Studies that incorporate data about pelvic inflammatory disease diagnosed in primary care and behavioural risk factors would further improve our understanding of the natural history of chlamydia. Our results provide reassurance for patients, but mean that the benefits of chlamydia screening programmes might have been overestimated.

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Objectives: To analyse trends in rates of genital chlamydial infection and ectopic pregnancy between 1985 and 1995 in a county in Sweden. Setting: Uppsala county where screening for chlamydial infection, treatment, and contact tracing has been widespread and where ectopic pregnancies are recorded. Methods: Rates of chlamydial infections and ectopic pregnancy between 1985 and 1995 were calculated for women aged 20-39 years. Poisson and linear regression were used to examine the association between the risk of ectopic pregnancy and the current rates of chlamydial infection and rates of chlamydial infection from up to 5 years earlier. Main outcome measures:Rates of chlamydial infection per 100 examinations, rates of ectopic pregnancy per 1000 pregnancies, rate ratios and 95% confidence intervals for an increase in chlamydial infections of 5 new cases per 100 examinations. Results: 103 870 cervical samples from women aged 15-39 years were analysed; 5648 (5.4%) were positive for chlamydia. 51 630 pregnancies were analysed; 930 (1.8%) were ectopic. Both rates declined over time. For women aged 20-24 years there was a strong correlation between the rate of ectopic pregnancy and the rate of chlamydial infection in the same year (r = 0.93, P < 0.001); among older women correlations were stronger with rates of chlamydial infection occurring 1 or 2 years earlier. In Poisson regression ectopic pregnancy was most strongly associated with the current rate of chlamydial infection among women aged 20-24 (rate ratio 1.85, 95% confidence interval 1.44 to 2.38), with the rate of infection 1 year earlier among 25-29 year olds (rate ratio 1.72, 1.33 to 2.22) and 30-34 year olds (rate ratio 2.27, 1.53 to 3.37); and with the rate 2 years earlier among 35 to 39 year olds (rate ratio 2.58, 1.45 to 4.60). Conclusions: Declining rates of genital chlamydial infections have probably led to a fall in the rate of ectopic pregnancies. The timing of the decline in the rate of ectopic pregnancies varies with age. Among young women falling rates of chlamydial infection have been accompanied by an immediate reduction in the rate of ectopic pregnancy.

Angiogenesis is an important but poorly understood process of the cycling endometrium. Endometrial angiogenesis is believed to be regulated by angiogenic growth factors under the influence of ovarian steroids. Vascular endothelial growth factor (VEGF) and its receptors VEGFR-1 and VEGFR-2, fibroblast growth factor 2 (FGF-2) and its receptors FGFR-1 and FGFR-2, as well as epidermal growth factor (EGF) and its receptor EGFR are believed to be important in the control of angiogenesis in the human endometrium. Their expression was examined by immunohistochemistry in endometrial biopsies obtained from 16 healthy women with proven fertility. Western blot analysis showed that the primary antibodies used were specific for their epitopes. We found that VEGF, FGF-2, EGF and their receptors were all expressed, especially in and/or around blood vessels, thus supporting the hypothesis that these peptides contribute to the regulation of angiogenesis and blood vessel function in the human endometrium. The receptors VEGFR-1, VEGFR-2, FGFR-2 and EGFR were co-expressed and exhibited their strongest expression during the beginning of the secretory phase, coinciding with the developing endometrial oedema and formation of a complex subepithelial capillary plexus. No correlation was seen between receptor expression and stromal blood vessel density.

A randomized, prospective clinical trial was conducted to compare the efficacy of laparoscopic treatment with conventional conservative abdominal surgery for tubal pregnancy. Entry criteria were: size of the ectopic gestation less than 4 cm, hemodynamic stability, accessibility for laparoscopic treatment and a trained laparoscopist on duty. There was no difference between the groups regarding gestational duration, size and location of the ectopic gestation, or the mean preoperative hCG values. The groups differed with respect to total operation time (73 min for the laparoscopy group vs. 88 min for the laparotomy group), hospital stay (2.2 vs. 5.4 days) and convalescence period (11 vs. 24 days). The rates of elimination of hCG was similar in the groups, and there were no statistical difference in the rate of second intervention.