Perinatal Outcomes and Neurodevelopment 1 Year after Birth in Discordant Twins According to Chorionicity.

Background and Objectives: This study aimed to compare maternal complications, perinatal outcomes, and neurodevelopment 1 year after the birth between concordant and discordant twins in monochorionic and dichorionic twins. Materials and Methods: This retrospective study included twin pregnancies delivered between 24 + 1 and 38 + 2 weeks of gestation between January 2011 and September 2019. Chorionicity was confirmed by ultrasonography and was categorized into monochorionic and dichorionic. Each was then divided into two groups (concordant and discordant) according to birth weight discordancy. Maternal complications and neonatal outcomes, including neurodevelopmental delays, were compared between the two groups. Results: A total of 298 pairs of twin pregnancies were enrolled, of which 58 (19.26%) women were pregnant with monochorionic diamniotic twins and 240 (80.54%) with dichorionic diamniotic twins. In both monochorionic and dichorionic twins, the discordant twins had a greater incidence of emergency deliveries because of iatrogenic causes than the concordant twins. Among dichorionic twins, discordant twins had lower birth weight rates and higher hospitalization rates and morbidities than concordant twins. Among monochorionic twins, discordant twins had a lower birth weight and higher neonatal mortality than concordant twins. The neonatal size was not a predictor of neurodevelopment in this group. Based on the logistic regression analysis, male sex, respiratory distress syndrome, and bronchopulmonary dysplasia were risk factors for the neurodevelopmental delay; birth weight discordancy was significant only in dichorionic twins. Conclusions: Perinatal outcomes in discordant twins may be poor, and neurodevelopment 1 year after birth was worse in discordant twins than in concordant twins. Discordancy in twins can be a risk factor for neurodevelopmental delay.

Midtrimester cervical elastography in pregnant women with a history of loop electrosurgical excision procedure (LEEP).

We aimed to compare cervical elastographic parameters based on a previous loop electrosurgical excision procedure (LEEP) and to determine whether they can predict preterm delivery in pregnant women with a history of LEEP. This multicenter prospective case-control study included 71 singleton pregnant women at 14-24 weeks of gestation with a history of LEEP and 1:2 gestational age-matched controls. We performed cervical elastography using E-cervix and compared maternal characteristics, delivery outcomes, cervical length (CL), and elastographic parameters between the two groups. The median mid-trimester CL was significantly shorter in the LEEP group. Most elastographic parameters, including internal os (IOS), external os (EOS), elasticity contrast index (ECI), and hardness ratio (HR), were significantly different in the two groups. In the LEEP group, the sPTD group compared to the term delivery (TD) group showed a higher rate of previous sPTD (50% vs. 1.7%, p < 0.001), higher IOS and ECI (IOS: 0.28 [0.12-0.37] vs. 0.19 [0.10-0.37], p = 0.029; ECI: 3.89 [1.79-4.86] vs. 2.73 [1.48-5.43], p = 0.019), and lower HR (59.97 [43.88-92.43] vs. 79.06 [36.87-95.40], p = 0.028), but there was no significant difference in CL (2.92 [2.16-3.76] vs. 3.13 [1.50-3.16], p = 0.247). In conclusion, we demonstrated that a history of LEEP was associated with a change in cervical strain measured in mid-trimester as well as with CL shortening. We also showed that cervical elastography can be useful in predicting sPTD in pregnant women with previous LEEP.

Fetal intracranial hemorrhage and maternal vitamin K deficiency induced by total parenteral nutrition: A case report.

RATIONALE: Fetal brain hemorrhage is rare. It is caused mainly by maternal trauma or fetal coagulation disorder, but in some cases, vitamin K deficiency may be the cause. PATIENT CONCERNS: We describe the case of a pregnant woman with bowel obstruction who was susceptible to vitamin K deficiency due to oral diet restriction, decreased intestinal absorption, and limited intravenous vitamin K supplementation. DIAGNOSIS: After 18 days of intermittent total parenteral nutrition, acute onset of severe fetal brain hemorrhage developed. INTERVENTIONS: After acute onset of fetal brain hemorrhage, the patient underwent an emergency cesarean section at 25 + 3 weeks of gestation due to fetal non-reassuring fetal monitoring. OUTCOMES: The Apgar score at birth was 0/0, and despite cardiopulmonary resuscitation, neonatal death was confirmed. After the baby was delivered, we checked the maternal upper abdominal cavity and found a massive adhesion in the small bowel to the abdominal wall near the liver and stomach with an adhesion band. The adhesion band, presumably a complication of previous hepatobiliary surgery, appeared to have caused small bowel obstruction. Adhesiolysis between the small bowel and abdominal wall was performed. LESSONS: This case demonstrates that even relatively short-term total parenteral nutrition can cause severe fetal brain hemorrhage. Vitamin K supplementation is required for mothers who are expected to be vitamin K deficient, especially if they are on total parenteral nutrition for more than 3 weeks.

Ultrasonographic evaluation of ovarian mass for predicting malignancy in pregnant women.

OBJECTIVE: The purpose of this study is to compare ultrasonographic ovarian mass scoring systems in pregnant women. STUDY DESIGN: This multicenter study included women with an ovarian mass during pregnancy who were evaluated using ultrasound and underwent surgery in 11 referral hospitals. The ovarian mass was evaluated and scored using three different scoring systems(International Ovarian Tumor Analysis Assessment of Different NEoplasias in the adnexa[IOTA ADNEX], Sassone, and Lerner). The final diagnosis was made histopathologically. Receiver operating characteristic(ROC) curves were generated for each scoring system. RESULTS: During the study period, 236 pregnant women underwent surgery for an ovarian mass, including 223 women(94.5%) with a benign ovarian mass and 13 women(5.5%) with a malignant ovarian mass. Among 10 ultrasound image findings, six findings were different between benign and ovarian masses(maximal diameter of mass, maximal diameter of solid mass, wall thickness of mass, inner wall structure, thickness of septations, and papillarity). In all three scoring systems, the ovarian mass scores were significantly higher in malignant masses than in benign masses, with the highest area under the ROC curve(AUROC) in the Sassone scoring system(AUROC: 0.831 for Sassone, 0.710 for Lerner vs 0.709 for IOTA ADNEX; p < 0.05, between the Sassone and Lerner/ IOTA ADNEX). A combined model was developed with the six different ultrasound findings, and the AUROC of the combined model was 0.883(p = not significant between the combined model and Sassone). CONCLUSION: In pregnant women, malignant ovarian tumors can be predicted with high accuracy using either the Sassone scoring system or the combined model.

The predicting factors for indication of surgery in patients with hemoperitoneum caused by corpus luteum cyst rupture.

The aim of the study was to determine the risk factors for surgery in patients with hemoperitoneum caused by corpus luteum cyst rupture. A retrospective review of medical records of 155 patients diagnosed with hemoperitoneum caused by corpus luteum cyst rupture was conducted between January 2010 and March 2015. The patients were divided into two groups: surgical and conservative management. The differences in characteristics between the two groups were compared. The indicators that determine the need of a surgery at the initial visit were also compared between the two groups. Initial hemoglobin level was lower (11.3 ± 1.4 g/dL vs. 12.2 ± 1.2 g/dL; p = 0.007) in the surgery group. There were significant differences in posterior cul-de-sac (PCDS) fluid collection depth (6.2 ± 2.5 cm vs. 4.5 ± 1.6 cm, p = 0.000), total fluid collection depth (8.4 ± 1.8 cm vs. 6.5 ± 2.1 cm, p = 0.000), single deepest pocket depth (6.7 ± 2.2 cm vs. 5.1 ± 1.5 cm, p = 0.006), liver-dome fluid (78.9% vs. 35.6%; p = 0.002), and estimated intrapelvic bleeding amount (325 ± 250 cc vs. 206 ± 146.5 cc, p = 0.002). The extravasation over grade 2 was more often in surgery group (68.4% vs. 30.1%; p = 0.001). PCDS fluid collection depth, the presence of liver-dome fluid, and the severity of contrast extravasation through ultrasonography and computed tomography are good indicators for determining the management of hemoperitoneum resulting from corpus luteum cyst rupture in healthy women.

The Feasibility of Cervical Elastography in Predicting Preterm Delivery in Singleton Pregnancy with Short Cervix Following Progesterone Treatment.

Previous studies demonstrated an association between cervical strain and risk of spontaneous preterm delivery (sPTD). The present study aimed to assess the efficacy of elastography in predicting sPTD at <32 weeks of gestation in women with singleton pregnancies receiving progesterone for short cervix (≤2.5 cm) diagnosed between 16 and 28 weeks of gestation Among 115 participants eligible for analysis, nine had sPTD at <32 weeks. Preprogesterone (PP0) mean internal os strain (IOS), elasticity contrast index (ECI), hardness ratio (HR), one-week postprogesterone (PP1) IOS, mean external os strain (EOS), ECI, and HR were significantly different between groups. Higher PP0 IOS, PP1 IOS, and PP1 EOS were associated with a 2.92, 4.39 and 3.65-fold increase in the risk of sPTD at <32 weeks, respectively (adjusted for cervical length (CL) at diagnosis; p = 0.04, 0.012 and 0.026, respectively). A combination of CL at diagnosis, PP0 IOS and PP1 EOS showed a significantly higher area under the receiver operating characteristic curve (0.858) than that of CL alone (p = 0.041). In women with singleton pregnancies receiving progesterone for short cervix, cervical elastography performed before and one week after progesterone treatment may be useful in predicting sPTD at <32 weeks of gestation.

The diagnosis of an imperforate anus in female fetuses.

Imperforate anus is an anomaly caused by a defect in the development of the hindgut during early pregnancy. It is a relatively common congenital malformation and is more common in males. Although there are cases of a solitary imperforate anus, the condition is more commonly found as a part of a wider spectrum of other congenital anomalies. Although urgent reconstructive anorectal surgery is not necessary, immediate evaluation is important and urgent decompressive surgery may be required. Moreover, as there are often other anomalies that can affect management, prenatal diagnosis can help in optimizing perinatal care and prepare parents through prenatal counseling. In the past, imperforate anus was diagnosed by prenatal ultrasonography based on indirect signs such as bowel dilatation or intraluminal calcified meconium. Currently, it is diagnosed by directly checking the perineum with prenatal ultrasonography. Despite advances in ultrasound technology, accurate prenatal diagnosis is impossible in most cases and imperforate anus is detected after birth. Here, we present two cases of imperforate anus in female fetuses that were not diagnosed prenatally.

Uterine Cervical Change at Term Examined Using Ultrasound Elastography: A Longitudinal Study.

The aim of the study was to investigate if there are changes in elastographic parameters in the cervix at term around the time of delivery and if there are differences in the parameters between women with spontaneous labor and those without labor (labor induction). Nulliparous women at 36 weeks of gestation eligible for vaginal delivery were enrolled. Cervical elastography was performed and cervical length were measured using the E-CervixTM system (WS80A Ultrasound System, Samsung Medison, Seoul, Korea) at each weekly antenatal visit until admission for spontaneous labor or labor induction. E-Cervix parameters of interest included elasticity contrast index (ECI), internal os strain mean level (IOS), external os strain mean level (EOS), IOS/EOS strain mean ratio, strain mean level, and hardness ratio. Regression analysis was performed using days from elastographic measurement at each visit to admission for delivery and the presence or absence of labor against cervical length, and each E-Cervix parameter fitted to a linear model for longitudinal data measured repeatedly. A total of 96 women were included in the analysis, (spontaneous labor, n = 39; labor induction, n = 57). Baseline characteristics were not different between the two groups except for cesarean delivery rate. Cervical length decreased with advancing gestation and was different between the two groups. Most elastographic parameters including ECI, IOS, EOS, strain mean, and hardness ratio were significantly different between the two groups. In addition, ECI, IOS, and strain mean values significantly increased with advancing gestation. Our longitudinal study using ultrasound elastography indicated that E-cervix parameters tended to change linearly at term near the time of admission for delivery and that there were differences in E-Cervix parameters according to the presence or absence of labor.

Nationwide population-based cohort study of adverse obstetric outcomes in pregnancies with myoma or following myomectomy: retrospective cohort study.

BACKGROUND: Our objective was to evaluate risks of adverse obstetric outcomes in pregnancies with myoma(s) or in pregnancies following myomectomy. METHODS: We analyzed the national health insurance database, which covers almost the entire Korean population, between 2004 and 2015. The risks of adverse pregnancy outcomes in pregnancies with myoma(s) or in pregnancies following myomectomy, compared to those in women without a diagnosed myoma, were analyzed in multivariate logistic regression analysis. RESULTS: During the study period, 38,402 women with diagnosed myoma(s), 9890 women with a history of myomectomy, and 740,675 women without a diagnosed myoma gave birth. Women with a history of diagnosed myoma(s) and women with a history of myomectomy had significantly higher risks of cesarean section (aOR 1.13, 95% CI 1.1-1.16 and aOR 7.46, 95% CI 6.97-7.98, respectively) and placenta previa (aOR 1.41, 95% CI 1.29-1.54 and aOR 1.58, 95% CI 1.35-1.83, respectively), compared to women without a diagnosed myoma. And the risk of uterine rupture was significantly higher in women with previous myomectomy (aOR 12.78, 95% CI 6.5-25.13), compared to women without a diagnosed myoma, which was much increased (aOR 41.35, 95% CI 16.18-105.69) in nulliparous women. The incidence of uterine rupture was the highest at delivery within one year after myomectomy and decreased over time after myomectomy. CONCLUSIONS: Women with a history of myomectomy had significantly higher risks of cesarean section and placenta previa compared to women without a diagnosed myoma.

Delayed diagnosis of a cesarean scar pregnancy: a case report.

BACKGROUND: Cesarean scar pregnancy is rare but may be related to early uterine rupture and may result in massive hemorrhage. Nowadays, most cesarean scar pregnancies are diagnosed early and can be managed properly. However, diagnoses of cesarean scar pregnancies that develop in the obstetrical area are sometimes delayed. CASE PRESENTATION: A 28-year-old Asian woman visited our institution because of suspected cesarean scar pregnancy. Ultrasonography and computed tomography confirmed a cesarean scar pregnancy with a live fetus with a crown-rump length of 4.83 cm, corresponding to 11 weeks 6 days of gestation. Initially, we injected 50 mg of methotrexate in the amniotic sac under transabdominal ultrasonographic guidance. However, fetal cardiac activity was still observed 2 days later. We decided to perform open laparotomy because of the possibility of massive bleeding. The gestational sac was removed, as well as most of the trophoblastic tissues that were adherent and invading the wall of the lower uterine segment. She was discharged in good condition 5 days after the operation. CONCLUSIONS: Despite the popular use of ultrasonography in prenatal care, diagnosis of cesarean scar pregnancy is still delayed. Surgical treatment with local methotrexate injection could be an option for the management of advanced cesarean scar pregnancy.

Transmembrane G protein-coupled receptor 30 gene polymorphisms and uterine adenomyosis in Korean women.

To compare the genetic distributions of 14G protein-coupled receptor 30 (GPR30) single-nucleotide polymorphisms (SNPs) between women with and without uterine adenomyosis. The study population comprised 69 Korean women. Uterine tissues from the adenomyosis and non-adenomyosis groups were used for DNA extraction. Pre-designed PCR/Sanger or Sequencing Primer and TaqMan® SNP Genotyping Assays were used for the SNP genotyping of the GPR30 gene. Immunohistochemical staining was performed to confirm the GPR30 expression. Differences in genotype and allele frequencies between the two groups were calculated using Fisher's exact test. The rs3802141 CT genotype was more common in the control group (p = .02), and the rs4266553 CC genotype was more common in the adenomyosis group (p = .02). The C allele of the SNP rs4266553 was more common in the adenomyosis group (p = .02). GPR30 expression was confirmed in 69 individuals in both groups. GPR30 gene polymorphism is presumed to affect the risk of adenomyosis with limited sample size. Further large-scale study is needed to explain the genetic influence of GPR30 gene polymorphism.

Incarceration of a pedunculated uterine fibroid in an umbilical hernia.

Uterine fibroids are common benign tumors that may cause an umbilical hernia in patients with increased intra-abdominal pressure due to pregnancy, obesity, ascites, and intra-abdominal tumors. However, the simultaneous occurrence of uterine fibroids and umbilical hernias, or fibroids and an associated umbilical hernia, during pregnancy has rarely been reported. Here, we present the case of a fibroid presenting as an incarcerated umbilical hernia in a menopausal patient.

Do the levels of tumor makers or proinflammatory cytokines in mid-trimester cervical fluid predict early-stage cervical shortening?

AIM: In the present study, we aimed to assess the biomarkers in mid-trimester cervical fluid that can predict early stage cervical shortening. MATERIAL AND METHODS: We obtained cervical swab specimens from 96 gravidas, after which the cervical length was measured, at approximately 20 weeks of gestation. Cervical length was measured again at 4 weeks after the initial examination. Cervical shortening was noted in 20 women between 20 and 24 weeks of gestation (group A), whereas no cervical shortening was noted in 76 women (group B). We evaluated the use of the levels of tumor markers, proinflammatory cytokines, and matrix metalloproteinase-8 (MMP-8) as candidate biomarkers. CA-125 and carcinoembryonic antigen levels were determined by using an automatic immunoassay system in both groups. Furthermore, IL-1ß, IL-8, tumor necrosis factor-α, and MMP-8 levels were measured using an enzyme-linked immunosorbent assay. RESULTS: The levels of inflammatory cytokines and MMP-8 did not differ between the two groups, and were not correlated with cervical length or the change in cervical length. Although CA-125 and carcinoembryonic antigen levels were higher in group A, they were not statistically significant (P = 0.304 and 0.092, respectively). CONCLUSION: Early stage cervical shortening in mid-trimester was not associated with an increase in the levels of tumor markers or proinflammatory cytokines in cervical fluid.

Amino-Terminal proB-Type Natriuretic Peptide Levels in the Umbilical Cord Blood of Neonates Differ According to the Type of Prenatally Diagnosed Congenital Heart Disease.

The aim of this study was to investigate differences in amino-terminal proB-type natriuretic peptide (NT-proBNP) levels in the cord blood of neonates according to the type of congenital heart disease (CHD) and to evaluate the usefulness of NT-proBNP as a prognostic marker. We included 76 neonates with prenatally diagnosed CHD and 45 controls without CHD. Neonates were classified into five groups based on echocardiographic findings. The levels of NT-proBNP in the cord blood were examined and analyzed according to the neonatal outcomes. The levels of NT-proBNP were significantly elevated in the cord blood of neonates with CHD compared with that in the cord blood of controls. The levels of NT-proBNP in the group with right ventricular outflow tract obstruction without a ventricular septal defect were significantly increased compared to that in the other groups. The neonates that required acute surgical correction had higher levels of NT-proBNP in the cord blood, though they were not statistically significant. Meanwhile, NT-proBNP levels in the cord blood of neonates with functional single ventricle were significantly higher than that in the cord blood of those with functional biventricles. Significant differences in the levels of NT-proBNP between survivors and nonsurvivors were observed within 1 year of birth. In this study, we found that the levels of NT-proBNP in the cord blood of neonates with CHD were higher than the levels in controls. This finding was striking in the group with right ventricular outflow tract obstruction, and it was associated with surgery for functional single ventricle and 1-year survival.

Prenatal diagnosis of multiple ventriculocoronary connections in pulmonary atresia with an intact ventricular septum: a case report.

We report a case of prenatally detected pulmonary atresia with an intact ventricular septum accompanied by multiple ventriculocoronary connections. This lesion was diagnosed by using ultrasonography at 20 weeks' gestation, and this antepartum diagnosis was confirmed with both postnatal echocardiography and chest computed tomography. The neonate underwent a modified Blalock-Taussig shunt on the 15th day of life, and was discharged 8 days after the surgery.

Differential expression of the metastasis suppressor KAI1 in decidual cells and trophoblast giant cells at the feto-maternal interface.

Invasion of trophoblasts into maternal uterine tissue is essential for establishing mature feto-maternal circulation. The trophoblast invasion associated with placentation is similar to tumor invasion. In this study, we investigated the role of KAI1, an antimetastasis factor, at the maternal-fetal interface during placentation. Mouse embryos were obtained from gestational days 5.5 (E5.5) to E13.5. Immunohistochemical analysis revealed that KAI1 was expressed on decidual cells around the track made when a fertilized ovum invaded the endometrium, at days E5.5 and E7.5, and on trophoblast giant cells, along the central maternal artery of the placenta at E9.5. KAI1 in trophoblast giant cells was increased at E11.5, and then decreased at E13.5. Furthermore, KAI1 was upregulated during the forskolin-mediated trophoblastic differentiation of BeWo cells. Collectively, these results indicate that KAI1 is differentially expressed in decidual cells and trophoblasts at the maternal-fetal interface, suggesting that KAI1 prevents trophoblast invasion during placentation.

Prenatal diagnosis of scalp cyst with spontaneous regression.

Fetal scalp cysts are rare, and they may be easily misdiagnosed as meningoceles or encephaloceles. A 38-year-old pregnant woman was referred to our hospital for ultrasound examination, which revealed a small cyst above the skull with no defect in the skull. The cyst could not be seen on follow-up ultrasound examinations. After delivery, a three-dimensional CT scan of the head revealed no defect in skull and scalp. Fetal scalp cysts usually require surgical excision after birth, but can regress without any treatment.

Benefit of uterine artery ligation in laparoscopic myomectomy.

OBJECTIVE: To determine the impact of uterine artery ligation in laparoscopic myomectomy, according to surgical results and clinical outcomes. DESIGN: Single-center, nonrandomized, comparative study. SETTING: University hospital, tertiary referral center. PATIENT(S): Ninety women undergoing laparoscopic myomectomy. INTERVENTION(S): Laparoscopic myomectomy with or without uterine artery ligation. MAIN OUTCOME MEASURE(S): Surgical results and clinical outcomes. RESULT(S): Fifty-one patients (56.6%) underwent laparoscopic myomectomy with uterine artery ligation (group A), and 39 patients (43.3%) underwent laparoscopic myomectomy alone (group B). The mean operating time was 100.0 ± 33.8 minutes in group A and 90.0 ± 37.1 minutes in group B. Both groups were similar with respect to mean blood loss (72.3 ± 109.0 mL vs. 62.6 ± 77.3 mL). The myoma recurrence rate in group A was significantly less than in group B after a median follow-up period of 11.1 months (2% vs. 13%). CONCLUSION(S): Both groups were similar with respect to surgical results. However, the recurrence rate was significantly lower in group A compared with group B.

Laparoendoscopic single-site surgery using a 2-mm miniport: initial gynecologic experience performed by a standard trocar and instruments.

OBJECTIVES: To evaluate the feasibility, safety, and patients' satisfaction of laparoendoscopic single-site surgery (LESS) with a 2-mm miniport using a standard trocar and instruments. METHODS: Between November 2008 and October 2009, we performed LESS for benign gynecologic conditions with a 2-mm miniport in 61 patients. Only 1 case was converted to conventional laparoscopic surgery using three ports to perform an appendectomy. The level of satisfaction of the patients was surveyed with five scales ("very satisfied," "satisfied," "not sure," "unsatisfied," and "very unsatisfied"). RESULTS: The mean operative time was 46.6 +/- 20.7 minutes, and the mean blood loss was 8.9 +/- 7.4 mL. The length of the hospital stay postoperatively averaged 1.8 +/- 0.9 days. No complications that required treatment occurred. Among 60 patients, 52 patients (87%) responded to the survey. Thirteen patients (25%) were "very satisfied," 29 patients (56%) were "satisfied," 8 patients (15%) were "not sure," and 2 patients (4%) were "unsatisfied." Forty-two patients (81%) had a positive perception of the surgery. Forty-nine patients (94%) responded that they were satisfied with the cosmetic outcome. CONCLUSION: LESS with a 2-mm miniport is a feasible and safe treatment modality for benign gynecologic diseases without incurring additional costs. Moreover, the cosmetic results were excellent.

The effect of nonperitonization and laparoscopic lymphadenectomy for minimizing the incidence of lymphocyst formation after radical hysterectomy for cervical cancer.

OBJECTIVES: To determine the clinical effect of nonperitonization and laparoscopic lymphadenectomy using bipolar electrocautery after radical hysterectomy for cervical cancer compared with peritonization and open lymphadenectomy using monopolar electrocautery. MATERIALS AND METHODS: This was a retrospective study of 180 patients who underwent a radical hysterectomy and pelvic lymph node dissection (PLND) for cervical cancer from August 1998 to August 2007. The patients were composed of the Peritonization + Laparotomy group (group A; n = 98, 196 PLND) and the Nonperitonization + Laparoscopy group (group B; n = 82, 164 PLND). Group B left the peritoneum in front of the PLND open. Two closed-suction drains were placed at each side of the PLND. RESULTS: Group B statistically showed a lesser total amount of lymphatic drainage (P = 0.001), shorter duration of inserted drains (P < 0.001), and shorter length of hospital stay (P < 0.001), compared with group A. The formation of lymphocysts occurred in 30 patients (41 lymphocysts) of group A and 5 patients (5 lymphocysts) of group B. Lymphocyst formation of group B had a statistically lower incidence than that of group A (P < 0.001). Lymphocyst formation was associated with an increase in the total amount of lymphatic drainage in group A (P = 0.090) and group B (P = 0.041) and a pathologic type of adenocarcinoma in group B (P = 0.016). Surgical experiences were not correlated with lymphocyst formation. CONCLUSIONS: The omission of peritonization and laparoscopic lymphadenectomy using bipolar electrocautery in early-stage cervical cancer were more effective than peritonization and open lymphadenectomy using monopolar electrocautery in minimizing the incidence of lymphocyst formation.