Hiroshi Shinmoto
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View article: Comparison of gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced MRI and contrast-enhanced CT evaluation of liver tumors: a prospective study
Comparison of gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced MRI and contrast-enhanced CT evaluation of liver tumors: a prospective study Open
Gd-EOB-MRI was superior to CE-CT for detecting liver lesions. The false-positive rate was low for both modalities. Equivocal lesions were encountered frequently, but routine use of alternate modalities and evaluation by 2 or more radiologi…
View article: Preoperative intestine-to-liver CT ratio: useful predictor of resection in strangulated obstruction
Preoperative intestine-to-liver CT ratio: useful predictor of resection in strangulated obstruction Open
View article: Gadoxetic acid-enhanced magnetic resonance imaging to predict pathologic complete response of colorectal liver metastases in preoperative chemotherapy
Gadoxetic acid-enhanced magnetic resonance imaging to predict pathologic complete response of colorectal liver metastases in preoperative chemotherapy Open
Recent advances in chemotherapy have expanded the opportunity for curative resection of colorectal liver metastases (CRLMs). Disappearing liver metastases (DLMs) are often encountered following chemotherapy. This study aimed to determine w…
View article: Internal thoracic artery aneurysm coincidental with protein S deficiency: a case report
Internal thoracic artery aneurysm coincidental with protein S deficiency: a case report Open
Background Internal thoracic artery aneurysms are exceptionally rare and carry a risk of fatal rupture. Although pseudoaneurysms are commonly associated with trauma or surgical interventions, the development of true aneurysms promoted by t…
View article: Comparison of gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced MRI and contrast-enhanced CT evaluation of liver tumors: A prospective study
Comparison of gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced MRI and contrast-enhanced CT evaluation of liver tumors: A prospective study Open
Purpose This prospective study aimed to evaluate the outcomes of hepatic lesions detected by contrast-enhanced computed tomography (CE-CT) and gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging …
View article: Spontaneous rupture during observation for degenerated uterine leiomyoma revealing uterine leiomyosarcoma: a case report
Spontaneous rupture during observation for degenerated uterine leiomyoma revealing uterine leiomyosarcoma: a case report Open
This case report describes a 47-year-old premenopausal woman who presented with abdominal discomfort and had been previously monitored for a suspected uterine leiomyoma. MRI revealed a 15 cm mass within the uterine body and slight intratum…
View article: Comparison of MRI findings for predicting massive hemorrhage during cesarean section in patients with placental malposition: partial placental volume of lower uterine segment is an accurate and objective indicator
Comparison of MRI findings for predicting massive hemorrhage during cesarean section in patients with placental malposition: partial placental volume of lower uterine segment is an accurate and objective indicator Open
This study revealed PVpartial is an accurate and objective indicator for massive hemorrhage, independent of radiologists' experience. This indicator potentially enables prediction of massive hemorrhage, improving pre-operative p…
View article: Predictive Impact of Peritoneal Computed Tomography Attenuation Values for the Severity of Upper Gastrointestinal Perforation
Predictive Impact of Peritoneal Computed Tomography Attenuation Values for the Severity of Upper Gastrointestinal Perforation Open
Evaluation of peritoneal CT attenuation values in patients with UGI perforation is simple and can be used to objectively assess the severity of peritonitis, which can serve as a reference for treatment strategies.
View article: Comparison of MRI findings for predicting massive hemorrhage during cesarean section in patients with placental malposition: partial placental volume of lower uterine segment is an accurate and objective indicator
Comparison of MRI findings for predicting massive hemorrhage during cesarean section in patients with placental malposition: partial placental volume of lower uterine segment is an accurate and objective indicator Open
Purpose To comprehensively compare the diagnostic ability and inter-reader agreement of magnetic resonance imaging (MRI) findings for predicting massive hemorrhage after cesarean section in patients with placental malposition, aiming to id…
View article: Gadoxetic acid-enhanced magnetic resonance imaging to predict pathologic complete response of colorectal liver metastases in preoperative chemotherapy
Gadoxetic acid-enhanced magnetic resonance imaging to predict pathologic complete response of colorectal liver metastases in preoperative chemotherapy Open
Background Recent advances in chemotherapy have expanded the opportunity for curative resection of colorectal liver metastases (CRLMs). Disappearing liver metastases (DLMs) are often encountered following chemotherapy. This study aimed to …
View article: A case of superior mesenteric artery stenting for small intestinal ischaemia caused by superior mesenteric artery invasion of pancreatic cancer
A case of superior mesenteric artery stenting for small intestinal ischaemia caused by superior mesenteric artery invasion of pancreatic cancer Open
Superior mesenteric artery (SMA) invasion by a malignant tumour is a serious condition leading to intestinal ischaemia. Although SMA stenting has been reported to be useful for SMA dissection and stenosis caused by atherosclerotic plaque, …
View article: Japanese clinical practice guidelines for prostate cancer 2023
Japanese clinical practice guidelines for prostate cancer 2023 Open
This fourth edition of the Japanese Clinical Practice Guidelines for Prostate Cancer 2023 is compiled. It was revised under the leadership of the Japanese Urological Association, with members selected from multiple academic societies and r…
View article: Extratesticular masses focusing on MRI findings
Extratesticular masses focusing on MRI findings Open
View article: Transarterial embolization for an infected internal iliac artery aneurysm without recurrence for a long period: A case report
Transarterial embolization for an infected internal iliac artery aneurysm without recurrence for a long period: A case report Open
We report an 85-year-old man who underwent transarterial embolization (TAE) for an infected internal iliac artery aneurysm. The patient presented with fever and left lower abdominal pain. Computed tomography (CT) revealed the expansion of …
View article: Perihepatic caudate lobe haematoma originating from a pancreatic pseudoaneurysm: a diagnostic dilemma
Perihepatic caudate lobe haematoma originating from a pancreatic pseudoaneurysm: a diagnostic dilemma Open
Despite advances in diagnostic imaging and interventional techniques, pancreatic pseudoaneurysms remain a life-threatening complication of pancreatitis. Presentation varies among patients and may include intra-abdominal, retroperitoneal, o…
View article: Preoperative Marking of a Tiny Lesion after Chemotherapy for Colorectal Liver Metastasis—Report of a Case—
Preoperative Marking of a Tiny Lesion after Chemotherapy for Colorectal Liver Metastasis—Report of a Case— Open
術前化学療法は大腸癌肝転移の治療法として確立しており,現在広く行われている.肝切除時の問題点の一つとして,化学療法後に画像上病変が消失もしくは微小病変になることが挙げられる.今回,われわれが試みている術前マーキングを紹介する.
View article: A case of low-grade endometrial stromal sarcoma presented as an intramyometrial mass mimicking uterine leiomyoma on MRI
A case of low-grade endometrial stromal sarcoma presented as an intramyometrial mass mimicking uterine leiomyoma on MRI Open
A low-grade endometrial stromal sarcoma (ESS) has a pattern of presenting as an intramyometrial mass and is often misdiagnosed as cellular leiomyoma or degenerative uterine leiomyoma. A low-grade ESS is a malignant tumour that requires tot…
View article: Idiopathic myointimal hyperplasia of mesenteric veins: radiological evaluation using CT angiography
Idiopathic myointimal hyperplasia of mesenteric veins: radiological evaluation using CT angiography Open
A 44-year-old man presented with a chief complaint of constipation. Initial contrast-enhanced CT showed extensive bowel wall thickening, mainly in the left colon, with a thin cord-like inferior mesenteric vein (IMV), in contrast to ectatic…
View article: A case of emphysematous intrascrotal abscess secondary to sigmoid coloseminal fistula
A case of emphysematous intrascrotal abscess secondary to sigmoid coloseminal fistula Open
View article: Longitudinal changes in radiographic features of pulmonary Mycobacterium avium complex diseases
Longitudinal changes in radiographic features of pulmonary Mycobacterium avium complex diseases Open
Radiographic changes of MAC-PD can be categorized into reversible (nodules and infiltrations) and irreversible (cavities and ectasis) lesions. Early treatment may prevent the accumulation of irreversible factors.
View article: Invasive candidiasis presenting bronchiectatic cavity as chest radiological findings: A case report
Invasive candidiasis presenting bronchiectatic cavity as chest radiological findings: A case report Open
Invasive candidiasis is rare but is associated with high mortality in immunocompromised or critically ill patients. Here, we present a case of a 55-year-old man with untreated diabetes who was diagnosed with coronavirus disease 2019 and su…
View article: Use of Imaging and Biopsy in Prostate Cancer Diagnosis: A Survey From the Asian Prostate Imaging Working Group
Use of Imaging and Biopsy in Prostate Cancer Diagnosis: A Survey From the Asian Prostate Imaging Working Group Open
This survey showed the diverse technical details and the availability of imaging and biopsy in the evaluation of PCA. This suggests the need for an educational program for Asian radiologists to promote standardized evidence-based imaging a…
View article: Ultra-short Echo-time MR Angiography Combined with a Modified Signal Targeting Alternating Radio Frequency with Asymmetric Inversion Slabs Technique to Assess Visceral Artery Aneurysm after Coil Embolization
Ultra-short Echo-time MR Angiography Combined with a Modified Signal Targeting Alternating Radio Frequency with Asymmetric Inversion Slabs Technique to Assess Visceral Artery Aneurysm after Coil Embolization Open
Contrast-enhanced CT and MR angiography are widely used for follow-up of visceral artery aneurysms after coil embolization. However, potential adverse reactions to contrast agents and image deterioration due to susceptibility artifacts fro…
View article: Embolization of Deep Femoral Artery Aneurysm with a Ligated Proximal Artery Using the Direct Percutaneous Puncture Technique
Embolization of Deep Femoral Artery Aneurysm with a Ligated Proximal Artery Using the Direct Percutaneous Puncture Technique Open
We report a case of a deep femoral artery aneurysm with a ligated proximal artery that was successfully managed with endovascular therapy. An 84-year-old male was referred to our institute with a history of surgical resection of a left rup…
View article: Composite pheochromocytoma–ganglioneuroma: a case with two distinct components radiographically
Composite pheochromocytoma–ganglioneuroma: a case with two distinct components radiographically Open
Composite pheochromocytoma is an extremely rare tumor that comprises a pheochromocytoma and an embryologically related neurogenic tumor, such as ganglioneuroma, ganglioneuroblastoma, neuroblastoma, or peripheral nerve sheath tumor. A 46-ye…
View article: Successful Closure of External Iliac Artery Perforation with Super-selective Transcatheter Coil Embolization
Successful Closure of External Iliac Artery Perforation with Super-selective Transcatheter Coil Embolization Open
We present two cases of external iliac artery perforation occurring after endovascular interventions successfully treated with direct closure using super-selective transcatheter coil embolization. Two patients, one 78-year-old man and one …
View article: Magnetic Resonance Lymphangiography Staging System for Lower Limb Lymphedema [Presidential Award Proceedings]
Magnetic Resonance Lymphangiography Staging System for Lower Limb Lymphedema [Presidential Award Proceedings] Open
This retrospective study analyzed the magnetic resonance lymphography (MRL) findings of 112 lower limbs of 56 lymphedema patients, and identified characteristic patterns of lymphatic impairment that change with the location in lower limbs …
View article: Successful Treatment of Subcapsular Hepatic Hemorrhage Concomitant with Diffuse Arterioportal Shunt by Transcatheter Arterial Embolization
Successful Treatment of Subcapsular Hepatic Hemorrhage Concomitant with Diffuse Arterioportal Shunt by Transcatheter Arterial Embolization Open
We present a case of subcapsular hepatic hemorrhage with a concomitant diffuse arterioportal shunt successfully treated with transcatheter arterial embolization. An 85-year-old man with duodenal carcinoma developed hemorrhagic shock three …
View article: Treatment of massive hemoptysis after thoracic aortic aneurysm repair
Treatment of massive hemoptysis after thoracic aortic aneurysm repair Open
View article: Treatment of Massive Hemoptysis After Thoracic Aortic Aneurysm Repair
Treatment of Massive Hemoptysis After Thoracic Aortic Aneurysm Repair Open
Background: Massive hemoptysis after thoracic aortic aneurysm (TAA) repair is a rare but potentially lethal condition. Endovascular management a challenging treatment option due to the complexity of culprit vessel access.Case presentation:…