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Published Papers 【 display / non-display 】

• A rare case of cerebral hemorrhage associated with intra-arterial infusion chemotherapy for advanced sphenoid sinus cancer.

  Heianna J, Yamashita Y, Iraha Y, Murayama S

  Journal of cancer research and therapeutics ( Journal of Cancer Research and Therapeutics )  16 ( 3 ) 686 - 689   2020.04 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Uterine artery embolization for postpartum and postabortion hemorrhage: a retrospective analysis of complications, subsequent fertility and pregnancy outcomes.

  Toguchi M, Iraha Y, Ito J, Makino W, Azama K, Heianna J, Ganaha F, Aoki Y, Murayama S

  Japanese journal of radiology ( Japanese Journal of Radiology )  38 ( 3 ) 240 - 247   2019.12 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  PURPOSE: To evaluate the impact of UAE for postpartum and postabortion hemorrhage on future infertility, especially in patients undergoing infertility treatment, along with angiographic endpoints. MATERIALS AND METHODS: Sixty-two sessions performed emergent or prophylactic UAE for postpartum or postabortion hemorrhage between 2008 and 2017 were selected. Subsequent pregnancy outcomes and complications were investigated as primary outcomes. The cases were divided into two groups based on the presence of massive hemorrhage. The relationships between angiographic endpoints and complications were also evaluated as secondary outcomes. RESULTS: The mean patient age was 34.1 ± 6.5 years. Fourteen of the 23 patients (60.9%) with desired fertility achieved pregnancy and 10 patients achieved live births (43.5%). In the patients during infertility treatment, three of the four patients had complications of severe adhesion after caesarean section or placenta accreta. In the group of patients with massive hemorrhage, the occurrence of uterine infection was significantly high (p = 0.014), but the angiographic endpoints were not significant, regardless of the occurrence of uterine infection. CONCLUSION: It was unnecessary to modify embolic endpoint according to seriousness of the hemorrhage. The pregnancy and live birth rates were acceptable, although patients undergoing infertility treatment had a higher rate of delivery complications.

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• Concomitant radiotherapy and transarterial chemoembolization reduce skeletal-related events related to bone metastases from renal cell carcinoma.

  Heianna J, Makino W, Ariga T, Ishikawa K, Kusada T, Maemoto H, Toguchi M, Ito J, Goya M, Miyazato M, Iraha Y, Murayama S

  European radiology ( European Radiology )    2019.11

  Type of publication: Research paper (scientific journal)

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• Fetal Congenital Peripheral Bronchial Atresia Diagnosed by Magnetic Resonance Imaging: Two Case Reports.

  Kozaki M, Iraha Y, Masamoto H, Nitta H, Chinen Y, Kinjo T, Mekaru K, Aoki Y

  AJP reports ( AJP Reports )  8 ( 4 ) e201 - e205   2018.10 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  Two types of congenital bronchial atresia (proximal and peripheral) have been classified. We report two cases of peripheral bronchial atresia diagnosed by prenatal ultrasonography (US) and magnetic resonance imaging (MRI). Evaluating an enlarged lung mass that is homogeneously hyperechoic on US and hyperintense on T2-weighted MRI can help in determining whether bronchial atresia is present. Proximal type is suggested when a dilated main bronchus is observed as a tubule structure of an involved lung hilum. In our cases, T2-weighted MRI revealed homogeneously hyperintense lung lesion with decreased signal intensity of adjacent lobe, flattening diaphragm, and mediastinal shift. Dilatation of the main bronchus was not observed and the opposite lung was normal in appearance. These findings were explained by secondary compression due to enlargement of the involved lung. The preservation of vascular structure and the retained normal shape, though enlarged, in the affected lobe were observed, which demonstrated undisrupted pulmonary architecture of the lobe. Thus, congenital cystic adenomatoid malformation was excluded because pulmonary architecture was relatively preserved. Finally, presumed diagnoses of the peripheral bronchial atresia were made and confirmed by postnatal chest computed tomography.

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• Multimodality imaging in secondary postpartum or postabortion hemorrhage: retained products of conception and related conditions.

  Iraha Y, Okada M, Toguchi M, Azama K, Mekaru K, Kinjo T, Kudaka W, Aoki Y, Aoyama H, Matsuzaki A, Murayama S

  Japanese journal of radiology ( Japanese Journal of Radiology )  36 ( 1 ) 12 - 22   2018.01 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  Secondary postpartum hemorrhage (PPH) and postabortion hemorrhage are rare complications. Retained products of conception (RPOC) is among the most common causes of both secondary PPH and postabortion hemorrhage. Other less common causes of secondary PPH are uterine vascular abnormalities such as arteriovenous malformations and pseudoaneurysms. These are usually related to a history of a procedure such as dilation and curettage or cesarean delivery. Subinvolution of the placental site is an idiopathic cause of secondary PPH; this condition may be underrecognized and therefore could have a higher incidence than currently reported. Gestational trophoblastic disease is rare but commonly presents as secondary PPH and resembles RPOC in radiologic appearance. The first-line imaging modality for secondary PPH is ultrasound, but computed tomography and magnetic resonance imaging may be used if the ultrasound findings are indeterminate. Angiography is an important tool for the definitive diagnosis of uterine vascular abnormalities. Appropriate management requires radiologists to be familiar with the multimodality imaging features of secondary PPH or postabortion hemorrhage.

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