Kazumasa Seiji
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View article: Uterine Artery Embolization for Symptomatic Uterine Myomas: Japanese Society of Interventional Radiology Procedural Guidelines 2021: English Version
Uterine Artery Embolization for Symptomatic Uterine Myomas: Japanese Society of Interventional Radiology Procedural Guidelines 2021: English Version Open
Uterine artery embolization is a treatment option for symptomatic uterine myomas. The Japanese Society of Interventional Radiology Guideline Committee developed guidelines for uterine artery embolization procedures for symptomatic uterine …
View article: Role of radiologists in the diagnosis and management of adrenal disorders
Role of radiologists in the diagnosis and management of adrenal disorders Open
This study aimed to focus on the role of radiologists in the diagnosis and management of adrenal lesions, particularly primary aldosteronism (PA) and secondary hypertension. As hypertension affects more than one-third of the population in …
View article: Bipolar Radiofrequency Ablation of the Adrenal Gland: <i>In Vivo</i> and <i>Ex Vivo</i> Experiments
Bipolar Radiofrequency Ablation of the Adrenal Gland: <i>In Vivo</i> and <i>Ex Vivo</i> Experiments Open
Laparoscopic adrenalectomy is currently the standard treatment modality for unilateral aldosterone-producing adenoma (APA); however, a less-invasive treatment is needed for its treatment. A new bipolar ablation system that poses a lower ri…
View article: Safety and feasibility of radiofrequency ablation using bipolar electrodes for aldosterone-producing adenoma: a multicentric prospective clinical study
Safety and feasibility of radiofrequency ablation using bipolar electrodes for aldosterone-producing adenoma: a multicentric prospective clinical study Open
View article: Safety and Feasibility of Radiofrequency Ablation Using Bipolar Electrodes for Aldosterone-Producing Adenoma: A Multicentric Prospective Clinical Study
Safety and Feasibility of Radiofrequency Ablation Using Bipolar Electrodes for Aldosterone-Producing Adenoma: A Multicentric Prospective Clinical Study Open
Purpose: Evaluation of feasibility and safety of percutaneous radiofrequency ablation (RFA) using bipolar radiofrequency (RF) devices in a prospective multicenter cohort of patients with benign aldosterone-producing adenoma (APA). Methods:…
View article: Fibromuscular dysplasia with recurrence after “long-term” following percutaneous transcatheter renal angioplasty: two case reports with a review of 26 patients
Fibromuscular dysplasia with recurrence after “long-term” following percutaneous transcatheter renal angioplasty: two case reports with a review of 26 patients Open
View article: The Potential of Computed Tomography Volumetry for the Surgical Treatment in Bilateral Macronodular Adrenal Hyperplasia: A Case Report
The Potential of Computed Tomography Volumetry for the Surgical Treatment in Bilateral Macronodular Adrenal Hyperplasia: A Case Report Open
Although adrenal resection is a major option to control hypercortisolemia in patients with bilateral macronodular adrenal hyperplasia, a predictive method for postoperative cortisol production has not been established. A 53-year-old man wi…
View article: Aldosterone-induced cardiac damage in primary aldosteronism depends on its subtypes
Aldosterone-induced cardiac damage in primary aldosteronism depends on its subtypes Open
Objectives This study compared cardiac function, morphology, and tissue characteristics between two common subtypes of primary aldosteronism (PA) using a 3T MR scanner. Design A retrospective, single-center, observational study. Methods We…
View article: Embolization of a paraumbilical shunt by the transparaumbilical venous approach and one-sheath inverse method: A case report
Embolization of a paraumbilical shunt by the transparaumbilical venous approach and one-sheath inverse method: A case report Open
View article: Treatment of Refractory Hypertension with Timely Angioplasty in Total Renal Artery Occlusion with Atrophic Kidney
Treatment of Refractory Hypertension with Timely Angioplasty in Total Renal Artery Occlusion with Atrophic Kidney Open
Angioplasty for cases of chronic total occlusion of renal artery with/without atrophic kidney is generally not recommended. We herein report a 57-year-old man who presented with renin-mediated refractory hypertension caused by occlusion of…
View article: Unique Sex Steroid Profiles in Estrogen-Producing Adrenocortical Adenoma Associated With Bilateral Hyperaldosteronism
Unique Sex Steroid Profiles in Estrogen-Producing Adrenocortical Adenoma Associated With Bilateral Hyperaldosteronism Open
Because of its rarity, our understanding of steroidogenesis in estrogen-producing adrenocortical adenoma, including the response to adrenocorticotropic hormone (ACTH) stimulation, remains limited. A 65-year-old man was referred to us becau…
View article: Apparent Diffusion Coefficient in the Resolution of Renal Ischemia after Angioplasty on Diffusion-weighted Imaging: Renal Artery Stenosis Caused by Progressive Thrombosis in Residual Chronic Aortic Dissection
Apparent Diffusion Coefficient in the Resolution of Renal Ischemia after Angioplasty on Diffusion-weighted Imaging: Renal Artery Stenosis Caused by Progressive Thrombosis in Residual Chronic Aortic Dissection Open
We report a case in which diffusion-weighted magnetic resonance imaging (DWI) demonstrated renal artery stenosis-related renal ischemia and the therapeutic efficacy of revascularization. The patient was a 73-year-old man, who underwent des…
View article: 18-Oxocortisol Synthesis in Aldosterone-Producing Adrenocortical Adenoma and Significance of <i>KCNJ5</i> Mutation Status
18-Oxocortisol Synthesis in Aldosterone-Producing Adrenocortical Adenoma and Significance of <i>KCNJ5</i> Mutation Status Open
Peripheral 18-oxocortisol (18oxoF) level could contribute to the detection of aldosterone-producing adenoma (APA) in patients with primary aldosteronism. However, peripheral 18oxoF varies among such patients, which is a big drawback concer…
View article: Renovascular hypertension associated with <scp>JAK</scp>2 V617F positive myeloproliferative neoplasms treated with angioplasty: 2 cases and literature review
Renovascular hypertension associated with <span>JAK</span>2 V617F positive myeloproliferative neoplasms treated with angioplasty: 2 cases and literature review Open
Myeloproliferative neoplasms ( MPN s) with Janus kinase 2 ( JAK 2) mutation are associated with a high risk for occlusive vascular diseases. We report 2 cases of renovascular hypertension associated with JAK 2 V617F mutation‐positive MPN s…
View article: Selective embolization therapy for intrarenal artery stenosis causing renovascular hypertension: Efficacy and follow‐up renal imaging
Selective embolization therapy for intrarenal artery stenosis causing renovascular hypertension: Efficacy and follow‐up renal imaging Open
We report the case of a young woman treated with selective renal embolization for renovascular hypertension caused by intrarenal artery stenosis and show follow‐up imaging of the treated kidney. An 18‐year‐old woman had renin‐dependent hyp…
View article: Anatomical Variations of the Right Adrenal Vein
Anatomical Variations of the Right Adrenal Vein Open
Adrenal venous sampling is the most reliable diagnostic procedure to determine surgical indications in primary aldosteronism. Because guidelines recommend multidetector computed tomography (CT) to evaluate the adrenal gland, some past repo…
View article: Recommendation of Repeated Ammonia Tests for Intrahepatic Portal-Systemic Shunt Without Cirrhosis in Elderly Patients With Psychiatric Symptoms
Recommendation of Repeated Ammonia Tests for Intrahepatic Portal-Systemic Shunt Without Cirrhosis in Elderly Patients With Psychiatric Symptoms Open
We report an elderly male patient with hyperammonemia induced by intrahepatic portal-systemic shunt without cirrhosis (IPSSwoC). The occasional emergence of his erratic behaviors was misdiagnosed as a psychiatric disorder. Regardless of hi…
View article: Renal Resistive Index Predicts Postoperative Blood Pressure Outcome in Primary Aldosteronism
Renal Resistive Index Predicts Postoperative Blood Pressure Outcome in Primary Aldosteronism Open
The renal resistive index (RI) calculated by Doppler ultrasonography has been reported to be correlated with renal structural changes and outcomes in patients with essential hypertension or renal disease. However, little is known about thi…
View article: A Case of a Massively Enlarged Spleen (Maximum Diameter 40 cm) Treated by Splenectomy following Splenic Arterial Embolization
A Case of a Massively Enlarged Spleen (Maximum Diameter 40 cm) Treated by Splenectomy following Splenic Arterial Embolization Open
56歳,女性.腹部膨満感,貧血精査目的に当院を紹介された.全身のリンパ節腫大と腹部US,造影CTにて腹腔内のほぼ半分を占める巨大な脾腫を認め,頸部リンパ節生検による病理組織学的検査にてsplenic marginal zone lymphoma (SMZL)と診断された.切迫脾破裂の状態にて早期脾臓摘出術を行うこととした.術中出血のリスク軽減目的に手術直前に経皮的動脈塞栓術(TAE)を施行し,脾動脈上枝・下枝をそれぞれ選択的に塞栓後,全身麻酔下に開腹脾臓摘出術を施行した.術…
View article: A case of bilateral aldosterone-producing adenomas differentiated by segmental adrenal venous sampling for bilateral adrenal sparing surgery
A case of bilateral aldosterone-producing adenomas differentiated by segmental adrenal venous sampling for bilateral adrenal sparing surgery Open
View article: Detection of Segmental Renal Ischemia by Diffusion‐Weighted Magnetic Resonance Imaging: Clinical Utility for Diagnosis of Renovascular Hypertension
Detection of Segmental Renal Ischemia by Diffusion‐Weighted Magnetic Resonance Imaging: Clinical Utility for Diagnosis of Renovascular Hypertension Open
Renal artery stenosis causes ischemia in the kidney, resulting in renovascular hypertension (RVH) through the activation of the renin-angiotensin system.1 Contrast-enhanced computed tomography (CT) is a highly sensitive and accurate modali…
View article: Impact of Small Renal Ischemia in Hypertension Development: Renovascular Hypertension Caused by Small Branch Artery Stenosis
Impact of Small Renal Ischemia in Hypertension Development: Renovascular Hypertension Caused by Small Branch Artery Stenosis Open
Renal artery stenosis causes ischemia in the kidney, resulting in renovascular hypertension (RVH) through activation of the renin-angiotensin system (RAS).1 Because RVH is one of the leading causes of curable hypertension, it should not be…
View article: Is there a role for segmental adrenal venous sampling and adrenal sparing surgery in patients with primary aldosteronism?
Is there a role for segmental adrenal venous sampling and adrenal sparing surgery in patients with primary aldosteronism? Open
Objective and design Adrenal venous sampling (AVS) is critical to determine the subtype of primary aldosteronism (PA). Central AVS (C-AVS) – that is, the collection of effluents from bilateral adrenal central veins (CV) – sometimes does no…
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View article: Measurement of Peripheral Plasma 18-Oxocortisol Can Discriminate Unilateral Adenoma From Bilateral Diseases in Patients With Primary Aldosteronism
Measurement of Peripheral Plasma 18-Oxocortisol Can Discriminate Unilateral Adenoma From Bilateral Diseases in Patients With Primary Aldosteronism Open
Adrenal venous sampling is currently the only reliable method to distinguish unilateral from bilateral diseases in primary aldosteronism. In this study, we attempted to determine whether peripheral plasma levels of 18-oxocortisol (18oxoF) …
View article: Development of a new catheter for selective venous sampling: a primary CFD study
Development of a new catheter for selective venous sampling: a primary CFD study Open
Poster: ECR 2015 / C-1099 / Development of a new catheter for selective venous sampling: a primary CFD study by: T. Kinoshita, K. Seiji, K. Takase, S. Matsumoto, M. Ohta; Sendai/JP