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Utility of Endoscopic Ultrasound-Guided Fine Needle Aspiration in the Diagnosis of Local Recurrence of Pancreaticobiliary Cancer after Surgical Resection

Matsumoto K, Kato H, Horiguchi S, Tomoda T, Matsumi A, Ishihara Y, Saragai Y, Takada S, Muro S, Uchida D, Okada H

Background/Aims: Endoscopic ultrasound (EUS)-guided fine needle aspiration (FNA; EUS-FNA) allows for diagnostic tissue specimens from various regions to be analyzed. How-ever, diagnosing recurrent pancreaticobiliary cancer after surgery is sometimes difficult....
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Evaluating Spinal Canal Lesions Using Apparent Diffusion Coefficient Maps with Diffusion-Weighted Imaging

Kanamoto H, Norimoto M, Eguchi Y, Oikawa Y, Orita S, Inage K, Abe K, Inoue M, Kinoshita H, Umimura T, Matsumoto K, Masuda Y, Furuya T, Koda M, Aoki Y, Watanabe A, Takahashi K, Ohtori S

Study Design: Observational study. Purpose: To evaluate healthy volunteers and patients with spinal canal lesions using apparent diffusion coefficient (ADC) maps with diffusion-weighted imaging. Overview of Literature: Decompression surgery for lumbar spinal...
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Innate Lymphoid Cells in the Airways: Their Functions and Regulators

Orimo K, Saito H, Matsumoto , Morita H

Since the airways are constantly exposed to various pathogens and foreign antigens, various kinds of cells in the airways—including structural cells and immune cells—interact to form a precise defense system...
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Efficacy and Safety of Complete Endoscopic Resection of Colorectal Neoplasia Using a Stepwise Endoscopic Protocol with SOUTEN, a Novel Multifunctional Snare

Yoshii S, Kubo M, Matsumoto , Kikuchi T, Takakuwa Y

Background/Aims: A multifunctional snare SOUTEN has a sharp tip at the top of the snare loop that enables incision of the mucosa, dissection of the submucosal layer, and snaring of...
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Microvascular density under magnifying narrow-band imaging endoscopy in colorectal epithelial neoplasms

Gonai T, Kawasaki K, Nakamura S, Yanai S, Akasaka R, Sato K, Toya Y, Asakura K, Urushikubo J, Fujita Y, Eizuka M, Uesugi N, Sugai T, Matsumoto

Background/Aims: Magnifying endoscopic classification systems, such as the Japan narrow-band imaging (NBI) Expert Team (JNET) classification, have been widely used for predicting the histologic diagnosis and invasion depth of colorectal...
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Diagnostic Ability of Convex-Arrayed Endoscopic Ultrasonography for Major Vascular Invasion in Pancreatic Cancer

Fujii Y, Matsumoto , Kato H, Saragai Y, Takada S, Mizukawa S, Muro S, Uchida D, Tomoda T, Horiguchi , Tanaka N, Okada H

BACKGROUND/AIMS: This study aimed to examine the diagnostic ability of endoscopic ultrasonography (EUS) for major vascular invasion in pancreatic cancer and to evaluate the relationship between EUS findings and pathological...
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Review of Radiological Parameters, Imaging Characteristics, and Their Effect on Optimal Treatment Approaches and Surgical Outcomes for Cervical Ossification of the Posterior Longitudinal Ligament

Shimokawa , Sato H, Matsumoto , Takami T

Determining the optimal surgical method for cervical ossification of the posterior longitudinal ligament (OPLL) is challenging. The surgical indication should be made based on not only radiological findings, but also...
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Local Sagittal Alignment of the Lumbar Spine and Range of Motion in 627 Asymptomatic Subjects: Age-Related Changes and Sex-Based Differences

Yukawa Y, Matsumoto , Kollor H, Minamide A, Hashizume , Yamada H, Kato F

STUDY DESIGN: Prospective cohort imaging study. PURPOSE: This study aimed to evaluate lumbar sagittal alignment and range of motion (ROM) using radiographs in a large asymptomatic cohort and identify sex-based differences...
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A “Back Light System” for Identification of Sites for Endoscopic Ultrasound-Guided Fine-Needle Aspiration in Solid Pancreatic Masses: A Prospective, Randomized Study with a Crossover Design

Harada R, Kato H, Fushimi S, Inoue H, Uchida D, Akimoto Y, Tomoda T, Matsumoto , Noma Y, Yamamoto N, Horiguchi , Tsutsumi K, Okada H

BACKGROUND/AIMS: We applied a back light system (BLS) with a magnifying glass to improve the ability to assess the adequacy of specimen sampling using endosonography. We conducted this study to...
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A pulmonary nodule in a patient with Crohn's disease

Hokama A, Haranaga S, Sasaki T, Matsumoto , Ohira T, Iraha A, Kinjo T, Nahar S, Fujita J

No abstract available.
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Efficacy and safety of cold forceps polypectomy utilizing the jumbo cup: a prospective study

Hasegawa H, Bamba S, Takahashi , Murata M, Otsuka T, Matsumoto , Fujimoto T, Osak R, Imaeda H, Nishida A, Ban H, Sonoda A, Inatomi O, Sasaki M, Sugimoto M, Andoh A

BACKGROUND/AIMS: There are few prospective studies on cold forceps polypectomy (CFP) using jumbo cup forceps. Therefore, we examined patients with diminutive polyps (5 mm or smaller) treated with CFP using...
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An Application of Artificial Intelligence to Diagnostic Imaging of Spine Disease: Estimating Spinal Alignment From Moiré Images

Watanabe K, Aoki Y, Matsumoto

The use of artificial intelligence (AI) as a tool supporting the diagnosis and treatment of spinal diseases is eagerly anticipated. In the field of diagnostic imaging, the possible application of...
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Kyphosis Progression after Balloon Kyphoplasty Compared with Conservative Treatment

Iida K, Harimaya K, Tarukado K, Tono O, Matsumoto , Nakashima

STUDY DESIGN: Retrospective cohort study (level of evidence: 4). PURPOSE: To demonstrate the effects of balloon kyphoplasty (BKP) on prevention of kyphosis progression. OVERVIEW OF LITERATURE: Kyphoplasty can correct local kyphosis (fractured...
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Clinicopathologic features, treatment, prognosis and prognostic factors of neuroendocrine carcinoma of the endometrium: a retrospective analysis of 42 cases from the Kansai Clinical Oncology Group/Intergroup study in Japan

Matsumoto , Shimokawa , Nasu K, Shikama A, Shiozaki T, Futagami M, Kai K, Nagano H, Mori T, Yano M, Sugino N, Fujimoto E, Yoshioka N, Nakagawa S, Shimada M, Tokunaga H, Yamada Y, Tsuruta T, Tasaki K, Nishikawa , Kuji S, Motohashi , Ito K, Yamada T, Teramoto N

OBJECTIVE: We conducted a retrospective, multi-institutional, collaborative study to accumulate cases of neuroendocrine carcinoma of the endometrium, to clarify its clinicopathologic features, treatment, prognosis and prognostic factors to collate findings...
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Characteristics of Low Back Pain due to Superior Cluneal Nerve Entrapment Neuropathy

Miki K, Kim K, Isu T, Matsumoto , Kokubo R, Isobe M, Inoue T

STUDY DESIGN: Retrospective analysis. PURPOSE: The present study aimed to investigate the features of low back pain (LBP) due to superior cluneal nerve (SCN) entrapment neuropathy (SCN-EN) using the Roland Morris...
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Distinction between Chronic Enteropathy Associated with the SLCO2A1 Gene and Crohn's Disease

Yanai S, Yamaguchi , Nakamura S, Kawasaki K, Toya Y, Yamada N, Eizuka M, Uesugi N, Umeno J, Esaki M, Okimoto E, Ishihara S, Sugai T, Matsumoto

BACKGROUND/AIMS: We recently identified recessive mutations in the solute carrier organic anion transporter family member 2A1 gene (SLCO2A1) as causative variants of chronic nonspecific multiple ulcers of the small intestine...
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Effects of continuous force application for extrusive tipping movement on periapical root resorption in the rat mandibular first molar

Matsumoto , Sringkarnboriboon S, Ono T

OBJECTIVE: The purpose of this study was to clarify the effects of continuous force application for extrusive tipping movement and occlusal interference on periapical root resorption in the rat mandibular...
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Undiagnosed Peripheral Nerve Disease in Patients with Failed Lumbar Disc Surgery

Yamauchi T, Kim K, Isu T, Iwamoto N, Yamazaki K, Matsumoto , Isobe M

STUDY DESIGN: Retrospective study (level of evidence=3). PURPOSE: We examine the relationship between residual symptoms after discectomy for lumbar disc herniation and peripheral nerve (PN) neuropathy. OVERVIEW OF LITERATURE: Patients may report...
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Which Side-Bending X-ray Position is Better to Evaluate the Preoperative Curve Flexibility in Adolescent Idiopathic Scoliosis Patients, Supine or Prone?

Bekki H, Harimaya K, Matsumoto , Kawaguchi , Hayashida , Okada S, Doi T, Nakashima

STUDY DESIGN: Prospective cohort study. PURPOSE: The present study aimed to evaluate the difference in the preoperative curve flexibility between the supine and prone positions in patients with adolescent idiopathic scoliosis...
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Immunohistochemical differentiation between chronic enteropathy associated with SLCO2A1 gene and other inflammatory bowel diseases

Yamaguchi , Yanai S, Nakamura S, Kawasaki K, Eizuka M, Uesugi N, Sugai T, Umeno J, Esaki M, Matsumoto

BACKGROUND/AIMS: We recently identified recessive mutations in the solute carrier organic anion transporter family member 2A1 gene (SLCO2A1) as causative variants of chronic enteropathy associated with SLCO2A1 (CEAS). The aim...
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