Prenatal Sonographic Three-dimensional Virtual Organ Computer-assisted Analysis Thymic Volume Calculation May Predict Intrauterine Growth Restriction.

Background: Intrauterine growth restriction (IUGR) refers to fetuses that are small for their gestational age. There is no effective test to predict this disease. The aim of our study is whether fetal three-dimensional (3D) ultrasonography (USG)-assisted thymus volume (TV) measurement predicts IUGR cases. Methods: Fetal 3D USG thymus measurement between 15 and 24 weeks of gestation was performed in a total of 100 women of reproductive age. Fetal TV was measured using the virtual organ computer-assisted analysis system program. All cases were followed up in terms of pregnancy complications until delivery. Results: IUGR was developed in six cases in total. In cases with IUGR, mean fetal TV was found to be statistically significantly lower than in healthy cases without it. When the fetal TV was taken as 0.1645, the sensitivity was calculated as 89.5% and the specificity as 50% for predicting IUGR. The use of low fetal volume parameters is a significant and good indicator for predicting IUGR according to the binary logistic regression analysis result. Conclusion: According to the results of this study, 3D fetal TV measurement may be used in routine second-trimester sonographic anomaly screening to predict the development of fetal IUGR. In this way, fetal mortality and morbidity caused by IUGR may be reduced.

The effect of low-dose combined hormone therapy (oestradiol and norethindrone acetate) on serum C-reactive protein levels and life quality in natural menopause women.

INTRODUCTION: To assess the effect of low-dose combined oestradiol and norethindrone acetate hormone therapy (HT) on serum C-reactive protein (CRP) levels and life quality in natural menopause women. MATERIAL AND METHODS: Forty-five natural menopause women admitted to the clinic during a 1-year period and diagnosed as menopause, who planned to have HT for menopausal symptoms, were enrolled in this prospective study. The serum CRP levels were measured, and vasomotor symptoms scores were graded according to the Blatt-Kupperman menopause index, and life quality scores according to the Menopause-Specific Quality of Life Questionnaire (MENQOL) were recorded before and after (3 months later) hormone therapy. RESULTS: The Blatt-Kupperman menopause index and MENQOL scores were significantly decreased after 3 months of low-dose treatment. No significant difference was found between white blood cell counts and serum CRP levels before and after 3 months of hormone therapy. CONCLUSIONS: Considering all HT types and biochemical effects, low-dose HT, which had positive results in terms of quality of life, was a safe treatment and could be preferred to conventional-dose preparations in cases without contraindications. Low-dose combined HT containing oestradiol and norethindrone acetate did not alter the serum CRP level in postmenopausal cases.

Serum ischemia-modified albumin level returns to its premenopausal level with 1-year hormone therapy in healthy menopausal women.

INTRODUCTION: To assess the effect of hormone therapy (HT) on serum ischemia modified albumin (IMA) levels in healthy menopausal women. MATERIAL AND METHODS: Thirty surgical menopausal women who were admitted to our menopausal polyclinic during a 1-year period and diagnosed with menopause and planned to have HT for menopausal symptoms were enrolled in this prospective study. The serum IMA levels were recorded before and after (3 months, 6 months, 12 months later) hormone treatment (2 mg estradiol hemihydrate). RESULTS: The mean age of women was 47.60 ± 2.34 years. The mean serum IMA levels were 0.610 ± 0.096 absorbance units (ABSU) at the beginning and 0.484 ± 0.080 ABSU after 3 months of hormone therapy. Following 6 months of hormone therapy, serum IMA level was 0.546 ± 0.075, and reached 0.580 ± 0.089 ABSU following 12 months of therapy. CONCLUSIONS: These findings suggest that HT may not block the menopause induced ischemia process. Although HT had a positive effect on serum IMA levels following 3 months' use, serum IMA levels returned to baseline levels after 12 months' use. Based on this study's findings, long-term use of HT may not have a positive effect on cardiovascular disease protection.

Effect of methotrexate on embryonal implantation: an experimental rat model.

The aim of this study is to investigate the methotrexate (MTX) in rat embryonal implantation and its association with Glycodelin A (GdA) and Mucin-1 (MUC-1) expression. For this purpose, 32 pregnant rats were divided into four equal groups: non-pregnant rats in group I (n = 8, control) and pregnant rats in group III (n = 8) were injected intraperitoneal with single dose of normal saline, non-pregnant rats in group II (n = 8) and pregnant rats in group IV (n = 8) were given 0.2 mg i.m. injection of MTX before three months of pregnancy. The dams were killed on 5th day of gestation and uterine horn samples were removed. Following dissection and routine histological preparation, immunohistochemical analysis was carried out. During immunohistochemical examination of the tissue samples prepared from the control and experimental groups, a statistically significant difference was observed between the groups in the luminal-glandular-decidualized epithelium of the uterus with GdA and MUC-1. Finally, in light of our findings, MTX adversely affected the expression of two molecules in Wistar Albino rats embryonal implantation model.

Comparison of the effect of isotretionin and alitretionin on endometriotic implants and serum vascular endothelial growth factor level: an experimental study.

OBJECTIVE: To compare the effects of alitretionin and isotretionin on endometrial peritoneal implants and serum vascular endothelial growth factor (VEGF) levels. STUDY DESIGN: Forty-eight female Sprague Dawley rats were used. Initially surgical rat endometriosis model was done. The endometrial implant volume was measured and rats were randomly divided into four groups. Group 1: Control group (rats did not get any drug but having endometriotic implants), group 2: rats receiving po isotretionin 10 mg/kg per day for 10 d, group 3: rats receiving po isotretionin 20 mg/kg per day for 10 d and group 4: rats receiving po alitretionin 80 mg/kg per day for 10 d. After 1-week medication, rats were sacrificed and size, histopathology of endometriotic implant and levels of VEGF were evaluated. RESULTS: Volumes of peritoneal endometrial implants were significantly decreased in Group 2 and Group 3 compared with initial values. However, there were no significant changes in histopathological scores and serum VEGF levels in all groups. CONCLUSIONS: This study finding may suggest the possible medical treatment modality of isotretionin on endometriosis. However, alitretionin (potent retinoid) does not have potent regressive effect on endometriotic implants as in isotretionin.

Biotin deficiency in hyperemesis gravidarum.

The aim of this study was to determine the serum biotin levels in patients with hyperemesis gravidarum (HG). Ninety pregnant women with HG (mild (n = 30), moderate (n = 30) and severe (n = 30)), and 80 pregnant women without HG were included for this study. In both groups, serum biotin levels were measured. There were no statistically significant differences in demographic and clinical characteristics between the HG groups and the control group except for PUQE scores. Serum biotin levels in all hyperemesis gravidarum groups were statistically significantly lower than control group. Negative statistically significant correlation between hyperemesis gravidarum severity and serum biotin levels was noted. This is the first study that shows low serum biotin levels in women with hyperemesis gravidarum. Impact statement What is already known on this subject? Almost 80% of pregnant women have nausea and vomiting. If nausea and vomiting became severe and the symptoms combined with weight loss and ketonuria; the diagnosis should be hyperemesis gravidarum (HG). The etiopathogenetic factors of this unwanted condition have not been exactly known. Biotin is an essential water-soluble vitamin. Biotin catabolism increases in pregnancy. Marginal biotin deficiency occurs in approximately 50% of the gestations despite the "normal" biotin intake on the diet. What do the results of this study add? Current study results elucidated that serum biotin levels were lower in HG cases compared to non HG cases. This study is the first study that reports the association between low serum level of biotin and HG. What are the implications of these findings for clinical practice and/or further research? Further research is needed to show the importance of biotin supplementation in women with hyperemesis gravidarum.

Is the measurement of serum ischemia-modified albumin the best test to diagnose ovarian torsion?

AIM: The aim of this study is to evaluate the diagnostic value of serum oxidative stress marker levels (ischemia-modified albumin, IMA; malondialdehyde, MDA) and total oxidant status (TOS), total antioxidant status (TAS) and oxidative stress index (OSI) levels that occur in ovarian torsion and to determine the threshold value of these markers in the diagnosis of ovarian torsion. METHODS: In this prospective case-control study, 34 women (the study group) with acute pelvic pain (20 with and 14 without ovarian torsion) and 40 control subjects were included. The diagnosis of ovarian torsion was confirmed with laparoscopy in all cases. Preoperative serum samples were collected in the study group. Serum oxidative stress marker levels (IMA and MDA) and TOS, TAS and OSI levels were measured. RESULTS: Serum MDA, TOS and IMA concentrations were significantly higher in women with ovarian torsion than in the healthy control group. However, serum TAS, TOS and OSI concentrations were significantly higher in women without ovarian torsion than within the healthy control group. Only IMA significantly distinguished patients with or without ovarian torsion. The best IMA value, according to the receiver operating characteristic curve, was 0.7045 absorbance units, with 90.00% sensitivity and 92.31% specificity. The patients in the ovarian torsion group had significantly lower serum TAS and OSI levels compared with patients without ovarian torsion. CONCLUSION: The elevated serum IMA levels with high sensitivity-specificity values observed in women with ovarian torsion seem to have a potential role as a serum marker in the preoperative diagnosis of ovarian torsion in emergency settings.

Fetal Splenic Artery Pulsatility Index May Predict the Need for Neonatal Intensive Care in Gestational Diabetes Class A1 Cases.

The fetal splenic artery pulsatility index is a parameter that reflects fetal well-being and has been used as a predictor of adverse pregnancy outcomes. The aim of this study was to investigate the predictive value of the splenic artery pulsatility index in gestational diabetes mellitus class A1 cases for intensive care unit admission. In this prospective case-controlled study, only sixty single pregnancy cases diagnosed with gestational diabetes mellitus class A1 were evaluated. Fetal splenic artery Doppler parameters such as peak systolic velocity, pulsatility index, resistivity index, and end-diastolic velocity were measured in all cases. The rate of requirements for the neonatal intensive care unit was noted. In cases requiring fetal intensive care, the fetal splenic pulsatility index was found to be statistically significantly lower than in healthy cases without it (0.94 ± 0.29 vs. 1.70 ± 0.53, respectively, p < 0.001, Student's t-test). When the fetal splenic PI cutoff value was selected as 1.105 cm3, the sensitivity was calculated as 97.9% and the specificity as 58.3% for predicting the need for fetal intensive care (AUC 0.968, p < 0.001, 95% CI 0.929-0.998). The use of a low fetal splenic artery PI parameter is a significant and good indicator for predicting the need for fetal intensive care according to the binary logistic regression analysis result (p = 0.006). This study suggests that evaluation of fetal splenic artery Doppler in mothers with gestational diabetes mellitus may be used to predict neonates requiring a newborn intensive care unit. Therefore, it is recommended that obstetricians use this simple, rapid, and valuable evaluation of fetal splenic artery Doppler and alert the neonatologist that a newborn intensive care unit may be required.

Intramural leoimyoma without endometrial cavity distortion may negatively affect the ICSI - ET outcome.

BACKGROUND: To assess the impact of intramural fibroids on the intracytoplasmic sperm injection-embryo transfer (ICSI-ET) cycle outcome, when there is no compression of the endometrial cavity. METHODS: In this retrospective, matched control study, the ICSI-ET outcome of sixty-two patients (Group I) with intramural fibroid (mean diameter <7 cm) and normal endometrial cavity demonstrated by office hysteroscopy was compared with matched-control group of patients (n = 301) with no fibroid (Group II). The diagnosis of fibroids was done by transvaginal ultrasonography. RESULTS: The mean age in fibroid group was 32.66 +/- 5.30 while this figure was 32.95 +/- 3.98 in control group. The clinical pregnancy rate was significantly lower in the fibroid group although fibroids not distorting the uterine cavity (25.8% vs. 39.9%, p = 0.04). In fibroid group the implantation rate was significantly lower than control group (20.97 +/- 37.93 vs.32.89 +/- 43.18%, p = 0.04). However, spontaneous abortion rate was higher in fibroid group but it did not reach the significant level (12.5% vs. 9.2%, p > 0.05). CONCLUSION: Women having intramural leiomyomas not encroaching on the uterine cavity have unfavorable ICSI/ET outcomes comparable to those of women without such leiomyomas. Therefore, myomectomy may be a good option for such patients with intramural fibroids even they do not have any endometrial distortion.

Effect of surgical staging on 539 patients with borderline ovarian tumors: a Turkish Gynecologic Oncology Group study.

OBJECTIVE: The objectives of this study were to examine demographic and clinicopathologic characteristics and to determine the effects of primary surgery, surgical staging and the extensiveness of staging. METHODS: In a retrospective Turkish multicenter study, 539 patients, from 14 institutions, with borderline ovarian tumors were investigated. Some of the demographic, clinical and surgical characteristics of the cases were evaluated. The effects of type of surgery, surgical staging; complete or incomplete staging on survival rates were calculated by using Kaplan-Meier method. RESULTS: The median age at diagnosis was 40 years (range 15-84) and 71.1% of patients were premenopausal. The most common histologic types were serous and mucinous. Majority of the staged cases were in Stage IA (73.5%). 242 patients underwent conservative surgery. Recurrence rates were significantly higher in conservative surgery group (8.3% vs. 3%). Of all patients in this study, 294 (54.5%) have undergone surgical staging procedures. Of the patients who underwent surgical staging, 228 (77.6%) had comprehensive staging including lymphadenectomy. Appendectomy was performed on 204 (37.8%) of the patients. The median follow-up time was 36 months (range 1-120 months). Five-year survival rate was 100% and median survival time was 120 months. Surgical staging, lymph node sampling or dissection and appendectomy didn't cause any difference on survival. CONCLUSION: Comprehensive surgical staging, lymph node sampling or dissection and appendectomy are not beneficial in borderline ovarian tumors surgical management.

In vitro fertilization pregnancy may cause fetal thymic volume involution: A case-control study.

Background: The effect of modern infertility treatment modalities on fetal thymic volume has not been well known. Objective: 3-dimensional (3D) fetal thymus volumes of 18-24 wk in vitro fertilization (IVF) pregnancies and spontaneous pregnancy cases were compared. Materials and Methods: 135 cases were evaluated in this prospective case-control study. The study was conducted between July 2019 and July 2020 at a university hospital in Trabzon, Turkey. Fetal thymus volume was calculated in the pregnant cases included in the study with the help of the virtual organ computer-assisted analysis system included in the advanced ultrasonography system. The fetal thymus volumes were compared between pregnant women with IVF and spontaneous pregnant women. Results: The fetal thymus size was significantly lower in the IVF pregnancy group than in spontaneous pregnancy cases (p < 0.001). It was found that the fetal complications, such as non-reassuring fetal health status and requirement for neonatal intensive care, were higher in cases who became pregnant after IVF treatment. It was also found that the rate of any pregnancy complication was significantly higher in IVF pregnancy group (p = 0.02). Conclusion: In light of these results, it may be concluded that small fetal thymus size may be another fetal complication of IVF pregnancies.

Evaluation of the height of the corpus callosum body region in fetal meningomyelocele malformation.

PURPOSE: To investigate height of the corpus callosum (CC) in order to describe the corpus callosum anomalies in fetuses with meningomyelocele (MMC) and compare these findings with the corpus callosum of healthy fetuses. METHODS: In this study, fetal MRI examinations were performed on 44 fetal MMC malformation cases. As the control group, 34 fetal MRI examinations, which were anatomically normal, were evaluated retrospectively. In the study group, lateral ventricle diameter, the level and diameter of the MMC defect, and CC height were measured. In the control group, CC height and lateral ventricular diameter were measured. RESULTS: The mean CC body height was 1.36 mm in the study group, and 2.48 mm in the control group. The height of the CC body region of the study population was inclined to be thinner compared with the control population (p<0.001). CONCLUSIONS: The fact that the height of the CC body region was found to be thinner in fetal MRI in cases of MMC compared with normal fetuses suggests that various callosal anomalies are uncertain, investigation of additional callosal anomalies may be beneficial in the decision for the continuation of pregnancy, and termination or intrauterine surgery in cases with MMC. Further large case group studies are needed.

Contribution of MRI to ultrasound in the diagnosis of fetal anomalies.

PURPOSE: To evaluate the contribution of MRI to ultrasound (US) in the diagnosis of fetal anomalies. MATERIALS AND METHODS: After informed consent and institutional review board approval, concomitant US and MR imaging were performed for 184 fetuses with suspected anomalies in university hospital. Postnatal final diagnoses were obtained for 183 anomalies in 151 fetuses either by radiological examination, surgery, autopsy, or inspection. The prenatal US and MR diagnoses were compared with respect to postnatal diagnoses. Sign test was used to determine the statistical significance. RESULTS: Both ultrasound and MR imaging correctly diagnosed 93 (50%) cases and failed in 12 (7%) cases. Ultrasound was superior in 7 (4%) cases. MR imaging was superior in 71 (39%) cases (P < 0.001). MR contributed to the prenatal diagnosis by the confirmation of the suspected US diagnosis in 13%, by demonstration of additional findings in 31% and by changing the diagnosis in 56% of the cases. The contribution rates were 55% for the central nervous system (CNS) (P < 0.001), 44% for thorax (P = 0.016), 38% for gastrointestinal system (GIS) (P = 0.031) and 29% for genitourinary system (GUS) (P = 0.003) anomalies. In facial, cardiac and extremity-skeletal system anomalies, there was not a significant contribution of MR imaging over US. CONCLUSION: MR imaging can be used as an adjunct to US in the prenatal diagnosis of fetal anomalies of not only the CNS but also the non-CNS origin especially those involving the GIS, GUS and thorax.

Failed labor induction in nulliparous women at term: the role of pelvic floor muscle strength.

INTRODUCTION AND HYPOTHESIS: The prolongation, protraction or complete cessation of labor is called failed labor. It is one of the leading indications for cesarean delivery. The goal of this study was to measure pelvic floor muscle strength and investigate its effect on labor in nulliparous pregnant women. METHODS: A total of 88 patients were included in the study. The study was conducted in nulliparous pregnant women with a low Bishop score (≤ 7). A low-dose intravenous oxytocin protocol was used for labor induction in all patients. Evaluation of pelvic floor muscle (PFM) strength was performed using a vaginal pressure measurement device just before labor induction. The duration of labor stages and the rate of failed labor were considered the main outcomes. The study group consisted of patients whose labor failed and who subsequently underwent cesarean delivery. The control group consisted of patients who delivered vaginally. The pelvic floor muscle strength and main outcome measures of the two groups were compared. RESULTS: No differences were found in age, weight, height, body mass index (BMI), and neonatal birth weight between the study and control groups. The mean resting and maximum squeeze pressures in the study group were 29.6 ± 9.8 and 56.4 ± 12.1 cm H(2)O respectively, significantly higher than in the control group. The best predictor of failed labor was a maximum squeeze pressure value of 59 cm H(2)0 (51.6% sensitivity and 87.7% specificity). CONCLUSIONS: Pelvic floor muscle strength appears to play a role in predicting failed labor.

Hyaluronan binding assay does not predict pregnancy rates in IUI cycles in couples with unexplained infertility.

PURPOSE: To investigate the relationship between hyaluronan binding (HB) assay and pregnancy rates in intrauterine insemination (IUI) cycles. METHODS: This prospective cohort study was done in Hacettepe University, a tertiary care center for reproductive medicine. Seventy-one consecutive couples who suffered from unexplained infertility and underwent controlled ovarian hyperstimulation (COH) and IUI were enrolled into the study. RESULTS: From the 71 IUI patients, the clinical pregnancy rate was 14.1% (10 of 71). HB ratio from the overall patient number was 48.6±25.9. The mean HB ratio in pregnant and non-pregnant groups was comparable (50.2±25.2 vs. 48.3±26.2, respectively, p>0.05). CONCLUSIONS: Hyaluronan binding assay does not predict pregnancy rates in IUI cycles in couples with unexplained infertility.

Serum MUC3 Protein as a Novel Marker of Gestational Hypertensive Disorders.

Background: This study aimed to investigate the serum levels of mucoprotein 3 in hypertensive diseases of pregnancy. Methods: In total, 60 consecutive women with gestational hypertensive diseases (gestational hypertension (n = 20), severe preeclampsia (n = 20), HELLP syndrome (n = 20)) and 20 pregnant women without any gestational hypertensive diseases were included for this prospective controlled study. Serum MUC3 protein levels were measured with commercially available ELISA kits. Results: Serum MUC3 protein level was the lowest in normal pregnant women (0.1047 ± 0.0295 ng/ml); while the severity of the disease increases, it significantly increased in severe preeclampsia (0.2700 ± 0.0199 ng/mL) and HELLP syndrome group (0.3494 ± 0.0455 ng/mL), but less in the gestational hypertension (0.2172 ± 0.0354 ng/mL) group. Mean serum MUC3 protein level differences were found the least in gestational hypertension (0.1125 ± 0.0107, p < 0.001), the most in HELLP syndrome (-0.2546 ± 0.0107, p < 0.001) compared with the pregnant control group. Conclusion: The increase in serum MUC3 protein concentration in these women supported the argument that serum MUC3 protein may be used as a marker indicating the severity of the gestational hypertensive diseases.

Acute increase in plasma D-dimer level in ovarian torsion: an experimental study.

BACKGROUND: Torsion of the ovary is a rare but serious cause of gynecologic surgical emergency. Specific laboratory markers that support the preoperative diagnosis of ovarian torsion are not currently available in the clinical routine. The aim of this study was to investigate the diagnostic value of plasma D-dimer level as an early indicator of ovarian torsion in an experimental rat ovarian torsion model. METHODS: Sixteen female adult Sprague-Dawley rats were used for this controlled experimental study. Eight rats in the sham operation group (Group I) underwent a surgical procedure similar to Group II but the ovary was not occluded. In Group II (eight rats), a torsion model was created by using atraumatic vascular clips just above and below the right ovary for a 2-h period of ischemia. Right ovaries were surgically removed at the end of the procedure in each group. Blood was sampled before and after operation to assess plasma D-dimer levels. The main outcome measure was ovarian histopathologic findings scores and plasma D-dimer levels. RESULTS: There was no significant difference in pre-operative plasma D-dimer levels (0.5963 ± 0.2047 mg/l in Group I, 0.6344 ± 0.1348 mg/l in Group II, P = 0.815, Mann-Whitney U-test). However, mean plasma D-dimer value for Group II was significantly higher than that in the control group (1.2267 ± 0.3099 versus 0.6213 ± 0.2346 mg/l, respectively, Mann-Whitney U-test, P < 0.001), following 2 h of ovarian torsion. Ovarian tissue damage scores were also statistically significantly different among groups. CONCLUSIONS: If the observations made in a rat model are extended to humans, plasma D-dimer measurement may be a valuable parameter in the early diagnosis of ovarian torsion.

Carbon Dioxide Pneumoperitoneum May Alter Ovarian Apoptosis: An Experimental Study.

OBJECTIVES: The aim of this study was to evaluate ovarian immunohistochemical CD95 expression in a rabbit carbon dioxide pneumoperitoneum model. MATERIALS AND METHODS: The study group including seven rabbits was subjected to intra-abdominal pressure (IAP) (12 mmHg); the control group was not subjected to IAP (the sham group, n = 7). At the end of the experiment, ovariectomy was performed. Immunohistochemical stained histologic specimen of the ovary with CD95 was evaluated. Based on the degree of cytoplasmic or membranous staining for CD95 from 0 (none) to 3 (severe), a microscopic apoptosis scoring system was used. RESULTS: Statistically significantly higher apoptosis scores in ovarian surface epithelial cells (2.57 ± 0.53, vs. 1.14 ± 0.38, P = 0.002, Mann-Whitney U-test, respectively), follicular epithelial cells (2.85 ± 0.38, vs. 1.85 ± 0.38, P = 0.002, Mann-Whitney U-test, respectively), and stromal cells (2.71 ± 0.49, vs. 1.29 ± 0.49, P = 0.002, Mann-Whitney U-test, respectively) were observed in pneumoperitoneum group, compared with no-pneumoperitoneum group. CONCLUSION: Even at safe IAP (12 mmHg) for an acceptable operation time period, there was a significant increase in apoptosis of ovarian cells.

First trimester fetal thymus volume may predict preeclampsia.

OBJECTIVE: The immunological factors have role in the development of preeclampsia. The thymus is one of the main organs of the fetal immune system. The aim of this prospective clinical study was to investigate the association between fetal thymus volume and preeclampsia by adding the 3-dimensional measurement of thymus volume to the routine fetal ultrasound scan at 11-14 week of gestation. STUDY DESIGN: Totally 72 pregnant women in their first trimester of pregnancy were included and 3-D fetal thymus volume was measured with sonographic VOCAL programme. All women gestational period was followed. The data of women with preeclampsia (n = 10, study group) and without preeclampsia (n = 62, control group) were compared. MAIN OUTCOME MEASURES: Fetal thymus volume, preeclampsia development. RESULTS: Fetal thymus volume, mean gestational age at birth and newborn birthweight were found to be statistically lower in cases with preeclampsia compared with those without any complications. When the fetal thymus volume measured by the VOCAL programme in the study group was used as a marker for preeclampsia development, the limit value was 0.0375 cm3; sensitivity was 87.1% and specificity was 50% (AUC 85.3%, P < .001, 95% CI 0.751-0.949). As a result of binary logistic regression analysis; the low fetal thymus volume measured at 11-14 gestational weeks can be used as a predictive factor for preeclampsia (P < .001). CONCLUSIONS: According to the results of this study; the development of preeclampsia may be predicted by measuring 3-D fetal thymus volume at the first trimester.