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Featured researches published by Kuniaki Toriyabe.


Asian Journal of Endoscopic Surgery | 2013

Cotyledonoid dissecting leiomyoma treated by laparoscopic surgery: a case report.

Hirohiko Tanaka; Kuniaki Toriyabe; Tokihiro Senda; Yasufumi Sakakura; Kayo Yoshida; Tetsuo Asakura; Haruki Taniguchi; Kenji Nagao

A cotyledonoid dissecting leiomyoma is categorized as a leiomyoma with an unusual growth pattern, which is characterized by remarkable extrauterine bulbous growth in continuity with a dissecting myometrial component. A 36‐year‐old patient was preoperatively diagnosed with a mature cystic teratoma of the left ovary, and according to MRI, the tumor protruded from the uterus into the right broad ligament and was 10 cm in diameter. She underwent laparoscopic surgery to resect ovarian teratoma and the tumor under the right broad ligament. The tumor was almost completely resected and diagnosed as a cotyledonoid dissecting leiomyoma based on intraoperative and pathological findings. Recurrence was not seen for 26 months postoperatively in our case. Gross specimens are often mistaken for malignant lesions, but this was a benign disease. Even if some remnants of the leiomyoma remained postoperatively, recurrence has never been reported. When a cotyledonoid dissecting leiomyoma is resected laparoscopically, intrapelvic structures around it, such as the ureter, uterine artery, bladder, rectum and external iliac vessels, must be given careful attention.


Journal of Perinatology | 2017

Anti-cytomegalovirus immunoglobulin M titer for congenital infection in first-trimester pregnancy with primary infection: a multicenter prospective cohort study

Kuniaki Toriyabe; F Morikawa; T Minematsu; M Ikejiri; S Suga; Tomoaki Ikeda

OBJECTIVE: We evaluated cytomegalovirus (CMV) immunoglobulin M (IgM) titer in pregnant women with primary infection as a predictive factor for congenital infection. STUDY DESIGN: Maternal CMV antibody screening during the first trimester was conducted prospectively at 16 centers in Japan between September 2013 and 2015. Women with confirmed maternal primary infection underwent testing for fetal congenital infection, and we investigated the positive predictive value of CMV IgM titer levels for congenital infection in women with a low IgG avidity. RESULTS: We identified 6 (8.6%) cases of congenital infection among 70 pregnant women with positive/borderline IgG, positive IgM and IgG avidity index ≤ 35.0% and 11 (39.3%) among 28 women with IgG and/or IgM seroconversion. IgM titer level ≥ 6.00 index showed the highest positive predictive value (17.1%). CONCLUSION: High titer of CMV IgM during the first trimester in pregnant women with primary infection is a risk factor for congenital infection.


Journal of Maternal-fetal & Neonatal Medicine | 2018

A literature review of herpes simplex virus hepatitis in pregnancy

Shoichi Magawa; Hiroaki Tanaka; Fumi H. Furuhashi; Shintaro Maki; Masafumi Nii; Kuniaki Toriyabe; Tomoaki Ikeda

Abstract Purpose: Hepatitis due to herpes simplex virus (HSV) during pregnancy is rare, it is often not included in the differential disease. However, hepatitis leads to maternal death; hence, early diagnosis is necessary. Hepatic enzyme elevation in late pregnancy is often associated with obstetric-related diseases, such as acute gestational fatty liver and HELLP syndrome (hemolytic anemia, elevated liver enzymes, low platelet count). These pregnancy-related diseases often improve maternal condition after completion of pregnancy, but in patients with HSV hepatitis, invasive treatment, such as cesarean section, may lead to deterioration of maternal condition after completion of pregnancy. A systematic review was conducted to extract necessary factors to avoid maternal death caused by herpetic hepatitis. Methods: In 24 cases reported since 1991, age, onset gestational weeks, initial symptoms, days from onset of symptoms to consultation, diagnosis method, treatment method, maximum liver escape enzyme value during hospitalization, bilirubin value, international normalized ratio value, and fetal/neonatal prognosis were extracted, and the relationship between maternal death group (n = 6) and maternal alive group (n = 18) was statistically analyzed. Results: Fever as an initial symptom was observed in all cases. Maternal death did not occur in patients administered with acyclovir (ACV) as empiric therapy. No difference was found between the two groups in other factors. Conclusion: Early diagnosis and treatment of herpetic hepatitis during pregnancy are important, as well as administration of empiric ACV concurrently with noninvasive diagnosis when a pregnant woman has elevated liver enzyme accompanied by fever in late pregnancy.


Journal of Maternal-fetal & Neonatal Medicine | 2018

Management of fetal growth restriction using the contraction stress test: a case-control study

Hiroaki Tanaka; Fumi H. Furuhashi; Kuniaki Toriyabe; Takeshi Matsumoto; Shoich Magawa; Masafumi Nii; Junko Watanabe; Kayo Tanaka; Takashi Umekawa; Yuki Kamimoto; Tomoaki Ikeda

Abstract Purpose: Fetal growth restriction (FGR) is a concerning health issue. However, studies on FGR management are limited due to its rarity. We aimed to evaluate the efficacy of the contraction stress test (CST) for FGR management. Materials and methods: A case-control retrospective study design. Our institute innovated CST in FGR management in 2017. We included women in their 33rd–40th week of pregnancy with a diagnosis of FGR and retrospectively divided them into groups: the CST group (FGR management with CST) and no CST group (FGR management without CST) before and after CST development. Neonatal outcome, pH, and pO2 of umbilical artery (UA) were compared between the two groups. Results: No significant differences in the rate of birth weight, Apgar score <7 (5 minutes), neonatal death, hospitalization to newborn childhood intensive care unit (NICU), and UA pH were found between groups. Average UA pH was 7.29 ± 0.05 and 7.29 ± 0.04 in the CST and no CST groups, respectively (p = .864). Average UA pO2 values were 21.1 ± 8.6 and 15.7 ± 5.0 mmHg in the CST and no CST groups, respectively (p = .016), showing significant differences. Conclusions: Neonatal outcomes and UA pH were slightly different between the groups managed with and without CST. However, UA pO2 values significantly differed between the groups. For FGR management, the use of a CST may allow for early intervention before fetal acidemia and acidosis. For establishing the effects of a CST for FGR management, analysis including several cases and investigation of long-term outcomes of newborn infants is necessary.


International Journal of Infectious Diseases | 2018

Congenital CMV infection via a re-infected mother with original antigenic sin: a case report.

Tetsuo Koshizuka; Kuniaki Toriyabe; Yuko Sato; Kazufumi Ikuta; Tomoaki Ikeda; Tatsuo Suzutani

A 27-year-old pregnant woman who was positive for anti-cytomegalovirus (CMV) antibodies gave birth to a congenitally CMV-infected neonate at 40 weeks of gestation. According to strain-specific serological analysis, which is able to determine the two types of CMV glycoprotein H (gH), the mother possessed anti-gH(To) antibodies only, but the neonate possessed anti-gH(AD) and anti-gH(To) antibodies at 4 weeks after birth. As the anti-gH(To) IgG was decreased in the neonate at 8 months post-delivery, these antibodies are thought to have been transferred from the mother as maternal antibodies. The anti-gH(AD) IgG level was maintained in the child even after 8 months post-delivery. Congenital infection with a CMV gH(AD) type strain was confirmed by strain-specific real-time PCR using a urine specimen from the child. On the other hand, anti-gH(AD) IgG was not detected even after 8 months post-delivery in a maternal specimen. The mother only produced antibodies against the CMV strain identified as the primary infection, which is characteristic of original antigenic sin.


Journal of Reproductive Immunology | 2018

Primary cytomegalovirus (CMV) infection in the period between late in previous pregnancy and early in current pregnancy

Kyoko Shimada; Kuniaki Toriyabe; Asa Kitamura; Kazuya Takeda; Erina Takayama; Shintaro Maki; Michiko Kaneda; Masafumi Nii; Kayo Tanaka; Yuki Kamimoto; Tomoaki Ikeda


Molecular and Clinical Oncology | 2016

Pregnancy and cesarean delivery after multimodal therapy for vulvar carcinoma: A case report

Kuniaki Toriyabe; Haruki Taniguchi; Tokihiro Senda; Masako Nakano; Yoshinari Kobayashi; Miho Izawa; Hirohiko Tanaka; Tetsuo Asakura; Tsutomu Tabata; Tomoaki Ikeda


Journal of Reproductive Immunology | 2016

A case of non-primary cytomegalovirus infection in a pregnant woman whose fetus developed congenital cytomegalovirus infection

Kuniaki Toriyabe; Asa Kitamura; Shinichiro Maki; Michiko Kubo; Masafumi Nii; Kayo Tanaka; Mikiko Nishioka; Junko Watanabe; Erina Takayama; Tadashi Maezawa; Hiroaki Tanaka; Nao Murabayashi; Kazuhiro Osato; Yuki Kamimoto; Tomoaki Ikeda


Journal of Reproductive Immunology | 2016

A case of dichorionic diamniotic twin pregnancy suspected with primary cytomegalovirus infection by maternal cytomegalovirus serological screening

Kazuya Takeda; Kuniaki Toriyabe; Makoto Ikejiri; Maki Nakamura; Manami Negoro; Haruna Nakamura; Toshio Minematsu; Keishiro Amano; Kentaro Kihira; Asa Kitamura; Hiroki Takeuchi; Erina Takayama; Hiroaki Tanaka; Nao Murabayashi; Kazuhiro Osato; Yuki Kamimoto; Tomoaki Ikeda


Japanese Journal of Gynecologic and Obstetric Endoscopy | 2013

A case of ovarian clear cell borderline tumor treated by laparoscopic restaging surgery

Kuniaki Toriyabe; Hirohiko Tanaka; Tokihiro Senda; Masako Ito; Miho Izawa; Tetsuo Asakura; Haruki Taniguchi; Kenji Nagao; Eiji Kondo

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