This retrospective study aims to compare the early manual removal of placenta (MROP) and conservative management of retained products of conception (RPOC) after 34 weeks of gestation. Nineteen cases underwent MROP within 24 h of delivery, of which nine patients had no symptoms requiring emergent treatment. These 9 patients (group M) were compared with 22 patients who were treated conservatively (group C). Massive bleeding was observed in 5 (56%) patients in group M and 11 (50%) patients in group C, with no significant difference in frequency. However, the lowest hemoglobin level within 72 h after massive bleeding was lower in group M (median: 6.7 vs. 7.7 g/dL, p = 0.029), suggesting that massive bleeding occurred in a short period of time. On the other hand, a retained placenta was observed in four patients in group M after the MROP; however, the placenta disappeared more quickly than in group C (median; 1.0 vs. 99.0 days, p = 0.009). In group C, all bleeding and infection occurred within 60 days of delivery, including heavy bleeding in six cases during the placental-extraction trial. Human chorionic gonadotropin in group C fell below the measurable threshold at a median of 67 days postpartum. In conclusion, for RPOC without urgent symptoms, early MROP and conservative treatment have their advantages and disadvantages. Randomized controlled trials are needed to determine which of those treatments is superior.

Background: Cervical cystic lesions encompass a range of benign and malignant pathologies. Magnetic resonance imaging or cytology alone cannot provide a definitive diagnosis, and conventional practice involves performing a cervical biopsy by conization to confirm the histology in cases exhibiting potential signs of lobular endocervical glandular hyperplasia (LEGH) or malignancy. However, as postoperative complications resulting from conization can impact future fertility and pregnancy, alternative diagnostic methods are needed for reproductive-age patients. This study aimed to establish the efficacy of a hysteroscopic biopsy for diagnosing cervical cystic lesions and compare it with conization. Methods: Thirteen patients with cervical cystic lesions suspected of LEGH or malignancy underwent a hysteroscopic biopsy, while 23 underwent conization. Patient background information, preoperative evaluation, histology, and postoperative outcomes were collected and compared retrospectively. Results: No significant differences were found between the hysteroscopy and conization groups in terms of mean patient age (45 vs. 48 years), operating time (23 vs. 35 min), blood loss (small amount vs. 43 mL), and postoperative hospitalization (1.1 vs. 1.6 days). Conclusion: A hysteroscopic biopsy allows for targeted resection of the cervix while maintaining diagnostic accuracy. It may serve as an efficient method for diagnosing cervical cystic lesions.

Several studies in Europe and the United States have shown that sexual intercourse (SI) during pregnancy is not associated with preterm birth. However, it is unclear whether these findings apply to pregnant Japanese women. The aim of this prospective cohort study was to elucidate the influence of SI during pregnancy on preterm birth in Japan. A total of 182 women who underwent antenatal care and delivery were included in this study. The frequency of SI was assessed using a questionnaire, and its association with preterm birth was analyzed. The results showed that SI during pregnancy was associated with a significantly higher cumulative preterm birth rate (p = 0.018), which was more pronounced for SI more than once a week (p < 0.0001). Multivariate analysis showed that SI, bacterial vaginosis in the second trimester, previous preterm birth, and smoking during pregnancy were independent risk factors for preterm birth. The combination of SI and second trimester bacterial vaginosis was associated with a 60% preterm birth rate, whereas either factor alone was associated with a lower rate, suggesting a synergistic effect (p < 0.0001). Future studies are needed to investigate the effect of prohibiting SI in pregnant women with bacterial vaginosis on preterm birth.

Aim: The aim of this study was to evaluate the surgical, reproductive, and perinatal outcomes of patients with diffuse uterine leiomyomatosis desiring fertility preservation.Methods: Patients diagnosed with diffuse uterine leiomyomatosis based on magnetic resonance imaging at Kindai University Hospital between 2017 and 2024 were included in a case series. A systematic literature review on diffuse uterine leiomyomatosis desiring fertility preservation was carried out.Results: The case series showed that fertility preservation was desired in 8 of 18 cases, of which 1 was conceived after assisted reproductive technology and underwent cesarean section at 34 weeks of gestation for placenta previa accreta. A systematic literature review identified 31 cases from descriptive observational studies (1–8 cases per study). Although more fibroids (n = 87) were enucleated by extensive myomectomy than by hysteroscopic myomectomy (n = 33) (p < 0.0001), extensive myomectomy was often associated with massive blood loss and blood transfusion. Perinatal complications were more frequent in extensive myomectomy (5/7) compared to hysteroscopic myomectomy (2/12, p = 0.04). Preterm delivery before 36 weeks was more frequent in extensive myomectomy (4/6 cases) than in hysteroscopic myomectomy (1/11 cases, p = 0.03).Conclusion: Fertility preservation in diffuse uterine leiomyomatosis was previously considered difficult, but it is now recognized to be possible. Hysteroscopic myomectomy is a minimally invasive option. If conception is not achieved, extensive myomectomy may be considered. However, extensive myomectomy is more invasive, with a higher risk of perinatal complications. Large‐scale clinical trials are required to establish a management standard for diffuse uterine leiomyomatosis.

Several studies in Europe and the United States have shown that sexual intercourse (SI) during pregnancy is not associated with preterm birth. However, it is unclear whether these findings apply to Japanese pregnant women. The aim of this prospective cohort study was to elucidate the influence of SI during pregnancy on preterm birth in Japan. A total of 182 women who underwent antenatal care and delivery were included in this study. The frequency of SI was assessed using a questionnaire, and its association with preterm birth was analysed. The results showed that SI during pregnancy was associated with a significantly higher cumulative preterm birth rate (p=0.018), which was more pronounced for SI more than once a week (p<0.0001). Multivariate analysis showed that SI, bacterial vaginosis in the second trimester, previous preterm birth and smoking during pregnancy were independent risk factors for preterm birth. The combination of SI and second trimester bacterial vaginosis was associated with a 60% preterm birth rate, whereas either alone was associated with a lower rate, suggesting a synergistic effect (p<0.0001). Future studies are needed to investigate the effect of prohibiting SI in pregnant women with bacterial vaginosis on preterm birth.