Gynecologic and Obstetric Investigation Journal Impact Factor & Information

Publisher: S. Karger (Firm), Karger

Journal description

This journal covers the most active and promising areas of current research in gynecology and obstetrics. Invited, well-referenced reviews by noted experts keep readers in touch with the general framework and direction of international study. Original papers report selected experimental and clinical investigations in all fields related to gynecology, obstetrics and reproduction. Short communications are published to allow immediate discussion of new data. The international and interdisciplinary character of this periodical provides an avenue to less accessible sources and to worldwide research for investigators and practitioners

Current impact factor: 1.25

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 1.251
2012 Impact Factor 1.103
2011 Impact Factor 1.276
2010 Impact Factor 1.031
2009 Impact Factor 1.045
2008 Impact Factor 1.417
2007 Impact Factor 1.157
2006 Impact Factor 0.874
2005 Impact Factor 0.81
2004 Impact Factor 0.867
2003 Impact Factor 0.812
2002 Impact Factor 0.728
2001 Impact Factor 0.884
2000 Impact Factor 0.662
1999 Impact Factor 0.465
1998 Impact Factor 0.431
1997 Impact Factor 0.432
1996 Impact Factor 0.557
1995 Impact Factor 0.64
1994 Impact Factor 0.45
1993 Impact Factor 0.35
1992 Impact Factor 0.398

Impact factor over time

Impact factor
Year

Additional details

5-year impact 1.15
Cited half-life 10.00
Immediacy index 0.17
Eigenfactor 0.00
Article influence 0.34
Website Gynecologic and Obstetric Investigation website
Other titles Gynecologic and obstetric investigation (Online), Gynecol obstet invest
ISSN 1423-002X
OCLC 44723324
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Karger

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • On author's server or institutional server
    • Server must be non-commercial
    • Publisher's version/PDF cannot be used
    • Publisher copyright and source must be acknowledged
    • Must link to publisher version
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: The objective of this article is to explore how Israeli Jewish women cope with the religious prohibition on sperm donation and the scarcity of Israeli donors, and to estimate the number of available sperm donors in Israel. A key word search was employed to retrieve relevant Hebrew and English sources; additional information was collected via interviews with two sperm donors and twelve donor insemination patients. Rabbinical instructions focus on married women and refrain from acknowledging the growing number of non-married donor insemination patients. Non-married women follow the restrictions relevant to married women and hence refrain from purchasing Jewish sperm. Israeli sperm banks offer donations of Jewish donors whose number is estimated at a maximum of 140 and a minimum of 50 for the entire Jewish population of 6.2 million. In order to abide by American Society for Reproductive Medicine recommendations, the number of available donors should optimally be six times larger. The scarcity of sperm donors drives the private import of American sperm donations. Reconsideration of the rabbinical prohibition to allow collecting sperm for donating to women who wish to have a baby is needed for the sake of increasing the donor pool, along with measures to ensure donors' privacy and dignity. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 08/2015; DOI:10.1159/000435880
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    ABSTRACT: To evaluate the effects of CO2 pneumoperitoneum during gynecologic laparoscopy on patients' postoperative cognitive function. This prospective clinical study included 225 adult female patients with American Society of Anesthesiologists physical status I or II. Patients underwent conventional open surgery (group I, n = 115) or gynecologic laparoscopy using abdominal insufflation with CO2 to an intra-abdominal pressure of 15 mm Hg (group II, n = 110). Serum S100β and neuron-specific enolase (NSE) concentrations were measured, both immediately before surgery and before the patient awoke after surgery. The Mini-Mental State Examination (MMSE) was administered 1 day before surgery as well as 1, 6, 12, 24 and 72 h after surgery and before discharge. MMSE scores were significantly lower relative to baseline at 1, 6 and 12 h post surgery, but returned to baseline by 48 h (group I) or 72 h (group II) post surgery. One hour after surgery, S100β serum levels were higher in group II than in group I (p < 0.05). NSE levels did not differ between the groups. In group II, the MMSE score significantly correlated with serum S100β or NSE concentrations. CO2 pneumoperitoneum influences postoperative cognitive function in patients undergoing gynecologic laparoscopy. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 08/2015; DOI:10.1159/000376576
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    ABSTRACT: MicroRNAs (miRNAs) are critical regulators of gene expression; they have emerged as new players in the pathophysiology of reproductive disorders such as preeclampsia and recurrent miscarriage (RM). In this study, miRNA expression profiles were determined by deep sequencing analysis in placental villi obtained from women with RM and with gestational age-matched normal pregnancy (NP). A total of 69 miRNAs were found to be aberrantly expressed in RM. Five of these human (Homo sapiens) miRNAs (hsa-miRNAs), including hsa-miR-3074-5p, -486-3p, -1269b, -6765-3p and -144-3p, were validated by qRT-PCR in 12 RM and 10 NP placental villi. Hsa-miR-3074-5p expression was significantly higher, while hsa-miR-486-3p expression was significantly lower, in RM compared to NP. Subsequently, the expression of mouse (Mus musculus) miR-486-3p (mmu-miR-486-3p) and mmu-miR-3074-5p, which are identical to hsa-miR-486-3p and hsa-miR-3074-5p, respectively, were examined by qRT-PCR in the uterus during early pregnancy. Mmu-miR-486-3p expression was significantly increased during the peri-implantation period, and the levels were significantly higher at implantation than at non-implantation sites. In contrast, the expression of mmu-miR-3074-5p was markedly decreased at implantation compared to non-implantation sites. These data suggest that miR-486-3p and miR-3074-5p may be involved in embryo implantation and that their aberrant expression is associated with RM. Larger studies are warranted to follow up this pilot study. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 08/2015; DOI:10.1159/000435879
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    ABSTRACT: Several factors may interfere with the success of fetal birth weight (BW) prediction. In this study we tried to determine the most probable factors that may lead to unsuccessful BW estimation. 200 consecutive pregnancies between 34 and 41 weeks of gestation were enrolled for the study. All subjects underwent sonographic fetal BW estimation before membrane rupture or engagement of presented part. Sonography was performed by the same sonographer blinded to the study design. Failure of estimation was determined when deviation was found to be >15%. Both amniotic fluid index (AUC = 0.768, p < 0.001) and maternal waist circumference (AUC = 0.698, p = 0.004) were significant predictors for failure of estimation. Optimal cut-off values were 80 mm for amniotic fluid index (77% sensitivity, 65% specificity) and 105 cm for maternal waist circumference (70% sensitivity, 61% specificity). The number of pregnancies with anteriorly located placenta was significantly higher in the group with failed estimation (12/20 vs. 39/180, p = 0.001). Amniotic fluid volume, body mass index, maternal waist circumference and placental location may all cause failure of fetal weight estimation and may need to be adjusted. Moreover, our results indicate that waist circumference may be a more reliable predictor of failure of fetal weight estimation compared to body mass index. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 07/2015; DOI:10.1159/000437016
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    ABSTRACT: Various gonadotropin preparations have been used for ovarian stimulation in intrauterine insemination (IUI). The purpose of the current study was to compare human menopausal gonadotropin (hMG) and recombinant follicle-stimulating hormone (rFSH) combined with clomiphene citrate (CC) in IUI cycles for polycystic ovary syndrome-associated infertility. In this prospective trial, couples prepared for IUI cycles were randomly allocated either to receive CC and rFSH (group A, n = 132) or CC and hMG (group B, n = 144) for ovarian stimulation. Outcomes including rates of clinical pregnancy, miscarriage, ovarian hyperstimulation syndrome, multiple pregnancy, cancellation and live birth were compared. The duration of gonadotropin therapy was shorter and total doses of gonadotropins was lower in the rFSH group. The number of stimulated follicles reaching >17 mm diameter was comparable between groups, but the mean follicular diameter was significantly higher in the rFSH group. The endometrium was also significantly thicker at the time of human chorionic gonadotropin administration in the rFSH group. However, pregnancy outcomes, including the rates of clinical pregnancy, ongoing pregnancy, live birth, miscarriage, ovarian hyperstimulation syndrome and cancellation, were similar between groups. IUI cycles in which rFSH is administered may result in shorter duration of treatment, a lower total gonadotropin dose and better follicular and endometrial characteristics on the day of human chorionic gonadotropin injection. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 07/2015; DOI:10.1159/000435773
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    ABSTRACT: To determine the mean number of follicular flushings needed to retrieve the maximal number of oocytes and to investigate the correlation between the number of flushings and oocyte/embryo quality as well as reproductive outcome. This prospective study included 154 oocyte retrieval cycles in 138 patients undergoing assisted reproductive technology treatment. During oocyte retrieval, aspirate and flushes were collected in four separate collections (A, F1, F2, F3) and inspected for the presence of an oocyte-cumulus complex (OCC). Outcome variables included oocyte recovery rate, percentage of mature oocytes, fertilization rate, day 2/day 3/day 5 embryo quality and clinical pregnancy rate/live birth rate. Out of 1,495 OCCs collected, 91% were obtained in collections A or F1. Significantly more mature oocytes were obtained in collection A (p = 0.03). The fertilization rate was similar for oocytes obtained in the four separate collections (p = 0.50). The proportion of good-quality day 2/day 3/day 5 embryos was similar (p = 0.93, p = 0.85 and p = 0.14, respectively). Clinical pregnancy rate and live birth rate were not significantly affected by the first two flushes. No live birth emanated from oocytes obtained from the third flush onwards. More than 90% of all recovered OCCs were obtained after follicular aspiration followed by follicular flushing up to two times (collections A and F1). Follicular flushing may increase the oocyte recovery rate and does not have a negative influence on fertilization rate, day 2/day 3/day 5 embryo quality or pregnancy rate. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 07/2015; DOI:10.1159/000434750
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    ABSTRACT: To compare the accuracy of 18 formulas in predicting fetal weight and also to make a comparison of these formulas in low-birth-weight fetuses (<2,500 g) and in fetuses weighing >4,000 g. Four-hundred-and-ninety-five pregnant patients were enrolled. The estimated fetal weight was calculated using 18 different formulas. The mean percentage error, the mean absolute percentage error and reliability analysis were used to compare the performance of the formulas. The Cronbach's alpha was the highest in the formulas Hadlock I (0.977 (95% CI = 0.972-0.980)), Hadlock III (0.977 (95% CI = 0.972-0.980)) and Ott (0.975 (95% CI = 0.970-0.979)) in all fetuses. It was the highest in formulas Ott (0.383 (95% CI = 0.091-0.581)), Hadlock IV (0.371 (95% CI = 0.074-0.572)) and Combs (0.369 (95% CI = 0.071-0.571)) in fetuses >4,000 g. It was the highest in formulas Coombs (0.957 (95% CI = 0.940-0.569)), Ott (0.956 (95% CI = 0.939-0.968)) and Hadlock IV (95% CI = 0.956 (0.938-0.968)) in fetuses <2,500 g. We noted that formulas Hadlock I, Hadlock III and Ott may be used to predict the estimated fetal weight accurately in all fetuses in our study. Formulas Ott, Hadlock IV and Coombs may be preferred to predict EFW in fetuses <2,500 g and >4,000 g. Better formulas should be developed to predict the fetal weight in fetuses >4,000 g. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 07/2015; DOI:10.1159/000365814
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    ABSTRACT: To evaluate the antioxidant effects of thymoquinone (TQ) and to investigate the biochemical, histopathological and immunohistochemical changes in experimental rat ovarian torsion. A total of 48 female adult rats were used in this study and randomly divided into 7 groups: (1) sham operation; (2) bilateral 3-hour ovarian ischemia; (3) 3-hour ischemia and 3-hour reperfusion; (4) and (5) rats were administered 20 and 40 mg/kg of TQ, respectively, before 0.5 h of ischemia, and then 3 h of ovarian ischemia was applied; (6) and (7) 3-hour ovarian ischemia was applied; 2.5 h after the induction of ischemia, rats were administered the same doses of TQ; at the end of 3 h of ischemia, a 3-hour reperfusion was applied. Histologic changes under light microscopy, immunoreactivity for anticaspase-3 and serum levels of malondialdehyde, interleukin-6, catalase and glutathione peroxidase were noted and compared between the 7 groups. Ischemia and ischemia/reperfusion cause a deterioration of biochemical and histopathological parameters. Administration of TQ seems to reverse these alterations and alleviate the injury. Antioxidant defense mechanisms appear to be enhanced by the administration of TQ. TQ at different doses attenuates ovarian ischemia and ischemia/reperfusion injury in rats. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 07/2015; DOI:10.1159/000431220
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    ABSTRACT: Like other stromal-derived gynecological tumors, a sclerosing stromal tumor of the ovary (SSTO) is a rare benign tumor that is difficult to distinguish from a malignant ovarian tumor in clinical practice. An SSTO is routinely treated with laparotomy. Here, we present two extremely rare cases of SSTO with contralateral and ipsilateral tubal pregnancies, in which laparoscopic surgery was performed to remove the tumors. After surgery, one patient (case 1) became pregnant twice within 29 months, and the other patient (case 2) did not become pregnant within 6 months postoperatively. These two cases suggest that laparoscopic management is not only useful in treating SSTO and complicating diseases, but it may also help to reduce unnecessary surgical injury to the ovary. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 07/2015; DOI:10.1159/000433535
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    ABSTRACT: To report the outcomes of transobturator tape (TOT) surgery with Safyre T® (Promedon, Argentina) slings for female stress urinary incontinence (SUI) at a 96- month follow-up. We conducted a clinical follow-up study of 153 patients diagnosed with SUI between January 2005 and December 2014. Patients were provided with detailed a priori information pertaining to the TOT procedure and were invited to attend follow-up visits at 1, 3, 12, 24, 48, 72 and 96 months. Follow-up visits included physical examination involving sling palpation, checking of the vaginal mucosa for erosion, cough test, as well as validated Urinary Distress Inventory-6 (UDI-6) and Incontinence Impact Questionnaire-7 (IIQ-7) questionnaires. The overall objective success rates, based on cough test results, were 91.3% at 12 months, 86.8% at 48 months and 77.6% at 96 months. Similarly, the overall subjective success rate, based on the validated UDI-6 and IIQ-7 scales, was 77.6% at 96 months. The cure rates achieved, following TOT treatment of SUI at 1-year follow-up, showed a statistically significant decline over an 8-year period, especially at months 48 and 96. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 06/2015; DOI:10.1159/000433536
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    ABSTRACT: The aim of our study was to investigate the clinical role of aldehyde dehydrogenase 1 (ALDH1) and leucine-rich repeat-containing G-protein-coupled receptor 5 (Lgr5) expressions in epithelial ovarian cancer (EOC) and their prognostic significance. One hundred primary EOC samples were obtained for immunohistochemical analysis of ALDH1 and Lgr5 expressions. Correlation analysis was performed between ALDH1 or Lgr5 and clinical factors. High expression of ALDH1 and Lgr5 was identified in 71 and 55 cases of EOC tissues, respectively. The ALDH1 and Lgr5 expressions in EOC tissues were significantly higher as compared to the normal ovaries and benign ovarian tumors. High expression of ALDH1 and Lgr5 was strongly correlated with advanced International Federation of Gynecology and Obstetrics (FIGO) stages, higher tumor grades, and poor overall survival of the patients. Lgr5 and ALDH1 were highly expressed in EOC tissues, and correlated with different FIGO operation-pathological stages and tumor grades, clinical outcome, and with each other. The combined use of ALDH1 and Lgr5 might be useful for the diagnosis and prognosis prediction of EOC patients. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 06/2015; DOI:10.1159/000431222
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    ABSTRACT: To study the association between cervical insufficiency and single nucleotide polymorphisms in seven genes coding for pro- and anti-inflammatory cytokine-related factors, mannose-binding lectin 2 (MBL2), collagen1α1 (COL1A1), factor II and factor V Leiden genes. In a case-control study, potential maternal biomarkers for cervical insufficiency were investigated in 30 women with a history of second-trimester miscarriage or preterm birth due to cervical insufficiency and in 70 control women. Homozygous carriers of the interleukin 6 (IL6) -174 genotype GG had an odds ratio (OR) of 3.1 [95% confidence interval (95% CI) 1.3-7.4, p = 0.01] and MBL2 genotypes coding for low or intermediate levels of plasma MBL had an OR of 3.3 (95% CI 1.2-9.0, p = 0.01) for cervical insufficiency compared with controls. Serum MBL levels were lower in women with cervical insufficiency than in controls (median 408 and 1,985 ng/ml, respectively, p < 0.01). Single nucleotide polymorphisms in the IL6 gene and the MBL2 gene and low MBL levels related to the latter polymorphism may increase the risk of preterm birth due to cervical insufficiency. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 06/2015; DOI:10.1159/000381620
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    ABSTRACT: To compare the reproductive outcomes of women with pathologically confirmed retained products of conception (RPOC) following spontaneous vaginal delivery versus first-trimester pregnancy termination. We retrospectively reviewed all cases of women who underwent uterine re-evacuation due to pathologically confirmed RPOC between January 1, 2000 and December 31, 2010. Reproductive outcomes were compared between women with RPOC following spontaneous vaginal delivery and those who underwent dilatation and curettage (D&C) due to first-trimester abortion. The study group consisted of 176 patients with pathologically confirmed RPOC. Of those, 83 (47.1%) were admitted after spontaneous vaginal delivery and 93 (52.9%) following D&C due to first-trimester abortion. There were no significant differences in the conception rate, the mean time to conception and the rate of a new infertility problem between women with RPOC after vaginal delivery compared to those following pregnancy termination (p > 0.05). Furthermore, there were no significant differences between the groups in pregnancy outcomes following RPOC. Pathologically confirmed RPOC harbors the same reproductive outcomes following spontaneous vaginal delivery and first-trimester pregnancy termination. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 06/2015; DOI:10.1159/000433433
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    ABSTRACT: Endometriosis is a polygenic and multifactorial disease. DNA damage plays a major role in mutagenesis, carcinogenesis and aging and is usually repaired by the action of several DNA repair enzymes. We investigated the association of the common variations of the DNA repair genes XRCC1 and XRCC4 with susceptibility to endometriosis in an Iranian population. In total, 160 patients with endometriosis (stages I-IV) and 174 healthy women were included in this case-control study. Genotyping of XRCC1 codon 399 as well as of XRCC4 -1394T/G, codon 247 and intron 3 insertion/deletion variations was performed using restriction fragment length polymorphism analysis of PCR-amplified fragments. The XRCC4 -1394TG genotype frequency was significantly lower (p = 0.005) in the patients (9.4%) than in the controls (21.1%). The frequency of the -1394G allele was significantly lower (p < 0.0001) in the patients (6.6%) than in the controls (19.0%). There were no statistically significant differences in the genotype and allele frequencies of the XRCC1 codon 399, XRCC4 codon 247 and XRCC4 intron 3 insertion/deletion polymorphisms between the cases and controls. The XRCC4 -1394T/G polymorphism was associated with susceptibility to endometriosis in an Iranian population. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 06/2015; DOI:10.1159/000366444
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    ABSTRACT: To review all past reports of Candida glabrata chorioamnionitis in the literature while noting their correlation with in vitro fertilization (IVF). We checked MEDLINE, PubMed and Google scholar (January 1970 to December 2014) for articles using the search terms 'Candida', 'Torulopsis', 'glabrata', 'chorioamnionitis', 'congenital', 'perinatal' and 'infection'. Case reports were included if they described a verified intrauterine infection with C. glabrata. The authors reviewed the articles and abstracted the data. 20 cases were compared, including a case reported from our institution shortly described in this article. 13 of 20 cases (65%) involved pregnancies achieved by IVF; 3 patients underwent amniocentesis during their pregnancy. Of the 7 cases with no history of IVF, 2 involved a history of cerclage and 2 a history of intrauterine device use. Only 6 infants survived, delivered prematurely by cesarean section. Review of literature demonstrated a high prevalence of IVF-assisted pregnancies among the few C. glabrata chorioamnionitis cases previously described, typically occurring during the second trimester. Additional cases were notable for additional instrumentation/invasive procedure. The prognosis was mostly grim, entailing a high incidence of stillbirth or rapid neonatal death. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 06/2015; DOI:10.1159/000431221
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    ABSTRACT: To clarify the efficacy and side effects of mechanical bowel preparation (MBP) before gynecologic surgery. A systematic review was conducted. Embase, PubMed, the Cochrane Central Register of Controlled Trials in the Cochrane Library and China National Knowledge Infrastructure were searched. Randomized controlled trials on MBP prior to gynecologic surgery were included. The software package Revman 5.3 was used for statistical analysis. Odds ratio (OR) and standard mean deviation were calculated for dichotomous and continuous variable, respectively. The quality of the included studies was moderate to good. MBP prior to laparoscopic gynecologic benign surgery or vaginal prolapse surgery has not been proven to be valuable for surgical performance, mainly involving visualization of the surgical field (OR 1.52, 95% confidence interval [CI] 1 to 2.32; Z = 1.95, p = 0.05), bowel handling (OR 2.21, 95% CI 0.83 to 5.84; Z = 1.59, p = 0.11), surgical complications (OR 1.3, 95% CI 0.46 to 3.67; Z = 0.5, p = 0.62) and bowel preparation. The discomfort due to oral catharsis is severer than no bowel preparation and enema, however without any difference between enema and no bowel preparation. The routine practice of MBP before gynecologic surgery needs to be reconsidered. This traditional clinical behavior has to be abandoned before benign laparoscopic surgery. Studies on the role of MBP for gynecologic laparotomy and gynecologic cancer are urgent. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 06/2015; DOI:10.1159/000431226
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    ABSTRACT: The aim of this study was to determine the incidence, mortality rates and trends of vulvar and vaginal cancers in Poland. Data were retrieved from the Polish National Cancer Registry. Age-standardised rates (ASRs) of cancer incidence and mortality were calculated by direct standardisation, and joinpoint regression was performed to describe the trends using the average annual percent change (AAPC). From 1999 to 2012, the number of diagnosed cases of vulvar cancer was 5,958, and the ASRs of incidence varied from 0.99 to 1.18, with a significant trend towards a decrease (AAPC -0.78; p < 0.05). The ASR of mortality varied from 0.39 to 0.62, with a slight but insignificant increase in trend (AAPC 0.72; p > 0.05). The ASR of vaginal cancer incidence varied from 0.21 to 0.31, while the ASR of mortality ranged from 0.09 to 0.22. This study also proved a significantly falling trend in vaginal cancer mortality (AAPC -4.69; p < 0.05) and a decreasing trend in vaginal cancer incidence (AAPC -1.67; p > 0.05). The rarity of vulvar and vaginal cancers as well as the decline in their incidence rates should not discourage further research on the epidemiology and treatment of these conditions. © 2015 S. Karger AG, Basel.
    Gynecologic and Obstetric Investigation 06/2015; DOI:10.1159/000381770