A Case of Urinary Extravasation and Urolithiasis During Pregnancy.

Renal pelvis rupture during pregnancy is rare. Although the most common cause is urolithiasis, no cases of pregnant women with ureterorenal stones have been reported. We report on a 33-year-old pregnant woman with renal pelvis rupture and a stone at the ureteropelvic junction with an abrupt onset of severe flank pain at 37 weeks' gestation. Transabdominal ultrasonography revealed bilateral hydroureters with right predominance and an anechoic space around the right kidney. Computed tomography (CT) revealed a renal stone at the ureteropelvic junction of the right kidney, a low-density area around the kidney on the same side, and bilateral hydronephrosis, which led to the diagnosis of pelvis rupture, urolithiasis, and perirenal urinary extravasation of the right kidney. Although there are potential adverse effects from radiation on fetuses and neonates, CT can be a useful diagnostic modality especially in such cases of acute abdominal pain from non-obstetric causes during pregnancy.

New ultrasonographic risk assessment of uterine scar dehiscence in pregnancy after cesarean section.

PURPOSE: We performed a new ultrasonographic risk assessment of uterine scar dehiscence, which is a potential risk factor for uterine rupture, in pregnancy after cesarean section. We attempted to shed light on the natural course of the change in the lower uterine segment by means of a longitudinal investigation through quantitative and qualitative evaluations. METHODS: This retrospective single-center study involved 31 women with a normal singleton pregnancy delivered by elective cesarean section between 2020 and 2021, with all women showing a "niche" in the lower uterine segments. The lower uterine segments were assessed qualitatively and quantitatively using transvaginal ultrasonography at 16-21, 22-27, and 28-33 weeks of gestation, and subjects were divided into two groups: those with uterine dehiscence (12 women) and those without uterine dehiscence (19 women), depending on the gross findings of the lower uterine segments at cesarean section. Analyses were performed using Wilcoxon's rank-sum and Mann-Whitney U test with a significance level of P < 0.05. RESULTS: The lower uterine segments changed from V-shaped to U-shaped to thin as gestation progressed and was more prominent in the uterine dehiscence group, occurring mostly at 22-27 weeks. At 22-27 weeks, the median myometrial thickness in the uterine dehiscence group was lower than in the group without uterine dehiscence (P = 0.0030). Thinning of the lower uterine segments had moved the cephalad at 22-27 and 28-33 weeks in cases with and without uterine dehiscence. CONCLUSION: A model of morphological changes in the niche was constructed based on qualitative and quantitative assessments. The morphological changes and actual thinning of the lower uterine segments were prominent in the second trimester in women considered to have uterine scar dehiscence.

Pre-Cerclage cervical length predicts long-term pregnancy sustenance: A case-control study.

Background: This study aimed to assess a predictor of long-term pregnancy sustenance post cervical cerclage in women with or without a medical history of cervical insufficiency. Materials and methods: We included pregnant women who underwent cerclage at 12-25 weeks gestation in four perinatal medical centers between January 2009 and December 2010. We classified the cerclage modality as ultrasound-indicated cervical cerclage if the pre-cerclage CL was <25 mm because the prophylactic and therapeutic cerclage definitions varied among institutions. The procedure was deemed successful if the pregnancy continued for more than 13 weeks post cerclage. We compared the outcomes of women who underwent successful and unsuccessful cerclage and investigated whether the pre-cerclage CL could predict pregnancy outcomes in women who underwent successful cerclage using receiver-operating characteristic curves. Results: We screened 114 pregnant women; 91 met the inclusion criteria. Pre-cerclage CL was a moderately accurate predictor of long-term pregnancy sustenance in the successful group (optimal cut-off value: 17 mm; area under the curve: 0.76; P = 0.0016). Approximately 87% of patients with a pre-cerclage CL ≥ 17 mm sustained their pregnancies for more than 13 weeks post cerclage; however, 64% of patients with a pre-cerclage CL < 17 mm did not. Conclusion: We speculate that the use of other treatment options in addition to cerclage in women with a pre-cerclage CL < 17 mm may result in a successful pregnancy.

New method for determining fibrinogen and FDP threshold criteria by artificial intelligence in cases of massive hemorrhage during delivery.

AIM: To investigate the feasibility of a novel method using artificial intelligence (AI), in which the fibrinogen criterion was determined by the quantitative relation between the distributions of fibrin/fibrinogen degradation products (FDPs) and fibrinogen. METHODS: A dataset of 154 deliveries comprising more than 2000 g of blood lost due to hemorrhage, excluding disseminated intravascular coagulation (DIC), among patients from eight national perinatal centers in Japan from 2011 to 2015 were obtained. The fibrinogen threshold criterion was identified by using the function that best fit the distributions of FDP as determined by AI. FDP production was described by differential equations using a dataset containing fibrinogen levels less than the fibrinogen criterion and solved numerically. RESULTS: A fibrinogen level of 237 mg/dL as the threshold criterion was obtained. The FDP threshold criteria were 2.0 and 8.5 mg/dL for no coagulopathy and a failed coagulation system, respectively. CONCLUSION: The fibrinogen threshold criterion for patients with massive hemorrhage excluding DIC at delivery were obtained by selecting the functions that best fit the distributions of FDP data by using AI.

High-intensity breastfeeding improves insulin sensitivity during early post-partum period in obese women with gestational diabetes.

AIM: To investigate whether high-intensity breastfeeding (HIB) reduces insulin resistance during early post-partum period in women with gestational diabetes (GDM), independent of post-partum weight change (PWC). MATERIALS AND METHODS: In this multicentre prospective study, we included Japanese women with GDM who underwent a 75-g oral glucose tolerance test (OGTT) during early post-partum. We measured plasma insulin during OGTT to obtain a homeostasis model of assessment of insulin resistance (HOMA-IR). We defined the condition in which infants were fed by breastfeeding alone or greater than or equal to 80% of the volume as HIB, and other statuses, including partial and nonbreastfeeding, as non-HIB. We investigated the association between post-partum HOMA-IR and the breastfeeding status after adjusting for confounders including PWC. RESULTS: Among 222 women with GDM who underwent the OGTT at 7.9 ± 2.3 weeks post-partum with a PWC of -7.8 ± 3.4 kg, although the rate of abnormal glucose tolerance (prediabetes and diabetes) did not differ between the groups (33% vs 32%), the HOMA-IR in the HIB women (n = 166) was significantly lower than that in the non-HIB women (n = 56) (1.12 ± 0.85 vs 1.72 ± 1.43, P = 0.0002). The effect of the HIB was independently associated with lower HOMA-IR after adjusting for confounders including PMC. However, the subgroup analysis according to their pre-pregnancy obesity states showed that the effect was seen only in the obese subjects (BMI ≥ 25). CONCLUSIONS: In obese Japanese women with GDM, HIB has a significant effect in reducing insulin resistance during early post-partum, independent of the post-partum weight loss.

Efficacy of palonosetron plus dexamethasone in preventing chemotherapy-induced nausea and emesis in patients receiving carboplatin-based chemotherapy for gynecologic cancers: a phase II study by the West Japan Gynecologic Oncology Group (WJGOG 131).

OBJECTIVE: Palonosetron is effective for the management of acute and delayed chemotherapy-induced nausea and vomiting (CINV). While emetogenic carboplatin-based chemotherapy is widely used to treat gynecologic cancers, few studies have evaluated the antiemetic effectiveness of palonosetron in this setting. METHODS: A multicenter, single-arm, open-label phase II trial was conducted to evaluate the safety and effectiveness of palonosetron in controlling CINV in patients with gynecologic cancer. Chemotherapy-naïve patients received intravenous palonosetron (0.75 mg/body) and dexamethasone before the infusion of carboplatin-based chemotherapy on day 1. Dexamethasone was administered (orally or intravenously) on days 2-3. The incidence and severity of CINV were evaluated using the patient-completed Multinational Association of Supportive Care in Cancer Antiemesis Tool and treatment diaries. The primary endpoint was the proportion of patients experiencing complete control (CC) of vomiting, with "no rescue antiemetic medication" and "no clinically significant nausea" or "only mild nausea" in the delayed phase (24-120 hours post-chemotherapy). Secondary endpoints were the proportion of patients with a complete response (CR: "no vomiting" and "no rescue antiemetic medication") in the acute (0-24 hours), delayed (24-120 hours), and overall (0-120 hours) phases, and CC in the acute and overall phases. RESULTS: Efficacy was assessable in 77 of 80 patients recruited. In the acute and delayed phases, the CR rates the primary endpoint, were 71.4% and 59.7% and the CC rates, the secondary endpoint, were 97.4% and 96.1%, respectively. CONCLUSION: While palonosetron effectively controls acute CINV, additional antiemetic management is warranted in the delayed phase after carboplatin-based chemotherapy in gynecologic cancer patients (Trial registry at UMIN Clinical Trials Registry, UMIN000012806).

Regression of uterine cervical diffuse large B-cell lymphoma transformed from mucosa-associated lymphoid tissue lymphoma subsequent to Chlamydia trachomatis eradication.

A 37-year-old-woman was referred to our center after her uterine cervix health screening presented abnormal findings. We performed a biopsy of the uterine cervix to examine for cervical dysplasia, and diagnosed a diffuse large B-cell lymphoma transformed from mucosa-associated lymphoid tissue (MALT) lymphoma of the cervix. The patient presented with concurrent chlamydial cervicitis and received eradication therapy for Chlamydia trachomatis. Four months later, the CD20 positive abnormal lymphocyte disappeared and complete remission was achieved. MALT lymphoma is considered to correlate with infection and inflammation. Particularly, the relationship between gastric MALT lymphoma and Helicobacter pylori is well known. MALT lymphoma of the uterine cervix is rare, and its relationship with C.trachomatis infection is unknown. Further studies are warranted to investigate this association.