1.The Prevalence and Characteristics of Symptomatic Uncomplicated Diverticular Disease Among Asian Patients With Unexplained Abdominal Symptoms
Tsumugi JONO ; Yuki KASAI ; Takaomi KESSOKU ; Tomoki OGATA ; Kosuke TANAKA ; Tsutomu YOSHIHARA ; Noboru MISAWA ; Shingo KATO ; Takuma HIGURASHI ; Kunihiro HOSONO ; Masato YONEDA ; Kosuke SEITA ; Takayuki KATO ; Eiji SAKAI ; Takeo KURIHASHI ; Machiko NAKATOGAWA ; Shunsuke OYAMADA ; Seiji FUTAGAMI ; Kok-Ann GWEE ; Atsushi NAKAJIMA
Journal of Neurogastroenterology and Motility 2024;30(1):87-96
		                        		
		                        			 Background/Aims:
		                        			The precise incidence of symptomatic uncomplicated diverticular disease (SUDD) and its effects on the quality of life (QOL) remain unclear, particularly in Asian patients with right-sided SUDD. We assess the prevalence of SUDD and its impact on QOL in a real-world population. 
		                        		
		                        			Methods:
		                        			Five institutional cohorts of patients who received outpatient treatment for unexplained abdominal symptoms from January 15, 2020 to March 31, 2022, were included. All patients underwent colonoscopy. SUDD was defined as the presence of recurrent abdominal symptoms, particularly pain in the lower right or left quadrant lasting > 24 hours in patients with diverticulosis at the site of pain. The 36-item short-form health survey was used to assess QOL. 
		                        		
		                        			Results:
		                        			Diverticula were identified in 108 of 361 patients. Among these 108 patients, 31% had SUDD, which was right-sided in 39% of cases.Of the 50 patients with right-sided diverticula, 36% had SUDD, as did 15 of 35 patients with left-sided diverticula (43%). Among the 33 patients with SUDD, diverticula were right-sided, left-sided, and bilateral in 39%, 45%, and 15% of patients, respectively. Diarrhea was more frequent in the SUDD group than in the non-SUDD group. Patients with SUDD had significantly lower physical, mental, and role/social component scores than those without SUDD. 
		                        		
		                        			Conclusions
		                        			It is important to recognize that patients with SUDD account for as high as 31% of outpatients with unexplained abdominal symptoms; these patients have diarrhea and a low QOL. The presence of right-sided SUDD was characteristic of Asian patients. 
		                        		
		                        		
		                        		
		                        	
2.Natural History of Chronic Intestinal Pseudo-obstruction and Need for Palliative Care
Kosuke TANAKA ; Hidenori OHKUBO ; Atsushi YAMAMOTO ; Kota TAKAHASHI ; Yuki KASAI ; Anna OZAKI ; Michihiro IWAKI ; Takashi KOBAYASHI ; Tsutomu YOSHIHARA ; Noboru MISAWA ; Akiko FUYUKI ; Shingo KATO ; Takuma HIGURASHI ; Kunihiro HOSONO ; Masato YONEDA ; Takeo KURIHASHI ; Masataka TAGURI ; Atsushi NAKAJIMA ; Kok-Ann GWEE ; Takaomi KESSOKU
Journal of Neurogastroenterology and Motility 2023;29(3):378-387
		                        		
		                        			 Background/Aims:
		                        			Natural history of chronic intestinal pseudo-obstruction (CIPO), a rare disease characterized by episodes of non-mechanical obstruction, is unclear in adults. This study evaluates the clinical course of CIPO and palliative care needs of patients. 
		                        		
		                        			Methods:
		                        			From October 2010 to September 2021, 74 patients who underwent cine MRI and had a definitive diagnosis of CIPO were prospectively included. We investigated disease etiology and outcomes, age at onset, nutritional status at consultation (body mass index and serum albumin), hydrogen breath test results, and total parenteral nutrition (TPN) during the disease course. 
		                        		
		                        			Results:
		                        			Forty-seven patients (64%) were women, with a mean age of 44 years at onset and 49 years at diagnosis. Primary CIPO was observed in 48 patients (65%). Secondary CIPO was observed in 26 cases (35%), of whom 18 (69%) had scleroderma. The mean body mass index, serum albumin level, and hydrogen breath test positivity rate were 17 kg/m2 , 3.8 mg/dL, and 60%, respectively. TPN and invasive decompression therapy were required by 23 (31%) and 18 (24%) patients, respectively. Intestinal sterilization was performed in 51 (69%) patients and was effective in 33 (65%); of these, 28 (85%) were taking metronidazole. Seven (9%) patients used opioids. There were 9 deaths (12%), including 5 (56%) from infection and 2 (22%) from suicide. Of the deaths, 6 (67%) and 4 (44%) underwent TPN management and decompression therapy, respectively. Fifty-one patients (69%) wanted palliative care. 
		                        		
		                        			Conclusion
		                        			CIPO is a rare, severe, and under-recognized disease. Standardization of treatment strategies, including palliative care and psychiatric interventions, is desired. 
		                        		
		                        		
		                        		
		                        	
3.Outcomes of Endoscopic Ultrasound-Guided Biliary Drainage in Patients Undergoing Antithrombotic Therapy
Nozomi OKUNO ; Kazuo HARA ; Nobumasa MIZUNO ; Shin HABA ; Takamichi KUWAHARA ; Hiroki KODA ; Masahiro TAJIKA ; Tsutomu TANAKA ; Sachiyo ONISHI ; Keisaku YAMADA ; Akira MIYANO ; Daiki FUMIHARA ; Moaz ELSHAIR
Clinical Endoscopy 2021;54(4):596-602
		                        		
		                        			Background/Aims:
		                        			The Japan Gastroenterological Endoscopy Society (JGES) has published guidelines for gastroenterological endoscopy in patients undergoing antithrombotic treatment. These guidelines classify endoscopic ultrasound-guided biliary drainage (EUS-BD) as a high-risk procedure. Nevertheless, the bleeding risk of EUS-BD in patients undergoing antithrombotic therapy is uncertain. Therefore, this study aimed to assess the bleeding risk in patients undergoing antithrombotic therapy. 
		                        		
		                        			Methods:
		                        			This single-center retrospective study included 220 consecutive patients who underwent EUS-BD between January 2013 and December 2018. We managed the withdrawal and continuation of antithrombotic agents according to the JGES guidelines. We compared the bleeding event rates among patients who received and those who did not receive antithrombotic agents. 
		                        		
		                        			Results:
		                        			A total of 18 patients (8.1%) received antithrombotic agents and 202 patients (91.8%) did not. Three patients experienced bleeding events, with an overall bleeding event rate of 1.3% (3/220): one patient was in the antithrombotic group (5.5%) and two patients were in the non-antithrombotic group (0.9%) (p=0.10). All cases were moderate. The sole thromboembolic event (0.4%) was a cerebral infarction in a patient in the non-antithrombotic group. 
		                        		
		                        			Conclusions
		                        			The rate of EUS-BD-related bleeding events was low. Even in patients receiving antithrombotic therapy, the bleeding event rates were not significantly different from those in patients not receiving antithrombotic therapy.
		                        		
		                        		
		                        		
		                        	
4.Outcomes of Endoscopic Ultrasound-Guided Biliary Drainage in Patients Undergoing Antithrombotic Therapy
Nozomi OKUNO ; Kazuo HARA ; Nobumasa MIZUNO ; Shin HABA ; Takamichi KUWAHARA ; Hiroki KODA ; Masahiro TAJIKA ; Tsutomu TANAKA ; Sachiyo ONISHI ; Keisaku YAMADA ; Akira MIYANO ; Daiki FUMIHARA ; Moaz ELSHAIR
Clinical Endoscopy 2021;54(4):596-602
		                        		
		                        			Background/Aims:
		                        			The Japan Gastroenterological Endoscopy Society (JGES) has published guidelines for gastroenterological endoscopy in patients undergoing antithrombotic treatment. These guidelines classify endoscopic ultrasound-guided biliary drainage (EUS-BD) as a high-risk procedure. Nevertheless, the bleeding risk of EUS-BD in patients undergoing antithrombotic therapy is uncertain. Therefore, this study aimed to assess the bleeding risk in patients undergoing antithrombotic therapy. 
		                        		
		                        			Methods:
		                        			This single-center retrospective study included 220 consecutive patients who underwent EUS-BD between January 2013 and December 2018. We managed the withdrawal and continuation of antithrombotic agents according to the JGES guidelines. We compared the bleeding event rates among patients who received and those who did not receive antithrombotic agents. 
		                        		
		                        			Results:
		                        			A total of 18 patients (8.1%) received antithrombotic agents and 202 patients (91.8%) did not. Three patients experienced bleeding events, with an overall bleeding event rate of 1.3% (3/220): one patient was in the antithrombotic group (5.5%) and two patients were in the non-antithrombotic group (0.9%) (p=0.10). All cases were moderate. The sole thromboembolic event (0.4%) was a cerebral infarction in a patient in the non-antithrombotic group. 
		                        		
		                        			Conclusions
		                        			The rate of EUS-BD-related bleeding events was low. Even in patients receiving antithrombotic therapy, the bleeding event rates were not significantly different from those in patients not receiving antithrombotic therapy.
		                        		
		                        		
		                        		
		                        	
5.Infectious peritonitis after endoscopic ultrasound-guided biliary drainage in a patient with ascites
Nozomi OKUNO ; Kazuo HARA ; Nobumasa MIZUNO ; Takamichi KUWAHARA ; Hiromichi IWAYA ; Masahiro TAJIKA ; Tsutomu TANAKA ; Makoto ISHIHARA ; Yutaka HIRAYAMA ; Sachiyo ONISHI ; Kazuhiro TORIYAMA ; Ayako ITO ; Naosuke KURAOKA ; Shimpei MATSUMOTO ; Masahiro OBATA ; Muneji YASUDA ; Yusuke KURITA ; Hiroki TANAKA ; Yasumasa NIWA
Gastrointestinal Intervention 2018;7(1):40-43
		                        		
		                        			
		                        			SUMMARY OF EVENT: Bacterial, mycotic peritonitis and Candida fungemia developed in a patient with moderate ascites who had undergone endoscopic ultrasound-guided biliary drainage (EUS-BD). Antibiotics and antifungal agent were administered and ascites drainage was performed. Although the infection improved, the patient's general condition gradually deteriorated due to aggravation of the primary cancer and he died. TEACHING POINT: This is the first report to describe infectious peritonitis after EUS-BD. Ascites carries the potential risk of severe complications. As such, in patients with ascites, endoscopic retrograde cholangiopancreatography (ERCP) is typically preferred over EUS-BD or percutaneous drainage to prevent bile leakage. However, ERCP may not be possible in some patients with tumor invasion of the duodenum or with surgically altered anatomy. Thus, in patients with ascites who require EUS-BD, we recommend inserting the drainage tube percutaneously and draining the ascites before and after the intervention in order to prevent severe infection.
		                        		
		                        		
		                        		
		                        			Anti-Bacterial Agents
		                        			;
		                        		
		                        			Ascites
		                        			;
		                        		
		                        			Bile
		                        			;
		                        		
		                        			Candida
		                        			;
		                        		
		                        			Cholangiopancreatography, Endoscopic Retrograde
		                        			;
		                        		
		                        			Drainage
		                        			;
		                        		
		                        			Duodenum
		                        			;
		                        		
		                        			Endosonography
		                        			;
		                        		
		                        			Fungemia
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Peritonitis
		                        			
		                        		
		                        	
6.Computed Diffusion-Weighted Imaging in Prostate Cancer: Basics, Advantages, Cautions, and Future Prospects.
Yoshiko R UENO ; Tsutomu TAMADA ; Satoru TAKAHASHI ; Utaru TANAKA ; Keitaro SOFUE ; Tomonori KANDA ; Munenobu NOGAMI ; Yoshiharu OHNO ; Nobuyuki HINATA ; Masato FUJISAWA ; Takamichi MURAKAMI
Korean Journal of Radiology 2018;19(5):832-837
		                        		
		                        			
		                        			Computed diffusion-weighted MRI is a recently proposed post-processing technique that produces b-value images from diffusion-weighted imaging (DWI), acquired using at least two different b-values. This article presents an argument for computed DWI for prostate cancer by viewing four aspects of DWI: fundamentals, image quality and diagnostic performance, computing procedures, and future uses.
		                        		
		                        		
		                        		
		                        			Magnetic Resonance Imaging
		                        			;
		                        		
		                        			Prostate*
		                        			;
		                        		
		                        			Prostatic Neoplasms*
		                        			
		                        		
		                        	
7.Implantation of Bone Marrow Stromal Cell Sheets Derived from Old Donors Supports Bone Tissue Formation
Manabu AKAHANE ; Takamasa SHIMIZU ; Yusuke INAGAKI ; Tsutomu KIRA ; Takuya EGAWA ; Akinori OKUDA ; Tadanobu ONISHI ; Tomoaki IMAMURA ; Yasuhito TANAKA
Tissue Engineering and Regenerative Medicine 2018;15(1):89-100
		                        		
		                        			
		                        			The purpose of this study was to evaluate the osteogenesis ability of osteogenic matrix cell sheets (OMCS) derived from old donor cells. Bone marrow stromal cells (BMSC) were obtained from young (7-week-old) and old (1-year-old) Fischer344 rats donors and cultured with modified Eagle's medium (MEM group) alone or containing dexamethasone (Dex; 10 nM) and ascorbic acid phosphate (AscP; 0.28 mM) (Dex/AscP group). We prepared four in vitro experimental groups: (1) young MEM, (2) young Dex/AscP, (3) old MEM and (4) old Dex/AscP. Cell proliferation and osteogenic marker mRNA expression levels were evaluated in vitro. To assess bone formation in vivo, the cells of each group were combined with beta tricalcium phosphate (TCP) disks followed by implantation in recipient rats. The in vitro study showed significant differences in the mRNA expression of osteocalcin, ALP, and BMP2 between MEM and Dex/AscP groups. Bone formation following implantation was observed upon histological analyses of all groups. TCP combined with OMCS (OMCS/TCP group) resulted in enhanced bone formation compared to that following combination with BMSC (BMSC/TCP). The osteocalcin content of the OMCS/TCP group 4 weeks after implantation was significantly higher than that in the BMSC/TCP construct for both young and old donors. The present study clearly indicated that OMCS could be generated from BMSCs of old as well as young donors using a mechanical retrieval method. Thus, through its usage of OMCS, this method may represent a potentially effective therapeutic option for cell-based therapy in elderly patients.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Animals
		                        			;
		                        		
		                        			Ascorbic Acid
		                        			;
		                        		
		                        			Bone and Bones
		                        			;
		                        		
		                        			Bone Marrow
		                        			;
		                        		
		                        			Cell Proliferation
		                        			;
		                        		
		                        			Dexamethasone
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			In Vitro Techniques
		                        			;
		                        		
		                        			Mesenchymal Stromal Cells
		                        			;
		                        		
		                        			Methods
		                        			;
		                        		
		                        			Osteocalcin
		                        			;
		                        		
		                        			Osteogenesis
		                        			;
		                        		
		                        			Rats
		                        			;
		                        		
		                        			RNA, Messenger
		                        			;
		                        		
		                        			Tissue Donors
		                        			
		                        		
		                        	
8.Risks of transesophageal endoscopic ultrasonography-guided biliary drainage.
Nozomi OKUNO ; Kazuo HARA ; Nobumasa MIZUNO ; Susumu HIJIOKA ; Takamichi KUWAHARA ; Masahiro TAJIKA ; Tsutomu TANAKA ; Makoto ISHIHARA ; Yutaka HIRAYAMA ; Sachiyo ONISHI ; Yasumasa NIWA
Gastrointestinal Intervention 2017;6(1):82-84
		                        		
		                        			
		                        			SUMMARY OF EVENT: Pneumoderma, mediastinal emphysema, and bilateral pneumothorax were developed in the patient who had undergone transesophageal endoscopic ultrasonography-guided rendezvous technique. Chest drainage was performed immediately. TEACHING POINT: Transesophageal approach carries the potential risks of severe complications such as mediastinal emphysema, mediastinitis, and pneumothorax. To prevent puncturing through the esophagus, clipping the esophagogastric junction using a forward-viewing scope before procedure is very useful. In cases of inadvertent transesophageal puncture, devices other than the needle should not be passed through the site.
		                        		
		                        		
		                        		
		                        			Drainage*
		                        			;
		                        		
		                        			Endosonography
		                        			;
		                        		
		                        			Esophagogastric Junction
		                        			;
		                        		
		                        			Esophagus
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Mediastinal Emphysema
		                        			;
		                        		
		                        			Mediastinitis
		                        			;
		                        		
		                        			Needles
		                        			;
		                        		
		                        			Pneumothorax
		                        			;
		                        		
		                        			Punctures
		                        			;
		                        		
		                        			Thorax
		                        			
		                        		
		                        	
9.Current Terminal Care for Cancer Patients andSignificance of Palliative Care Units
Hiromu Tanaka ; Yuki Eguchi ; Akiko Matsumoto ; Kensuke Sugii ; Tomoka Sakaguchi ; Yukari Tango ; Tsutomu Maruhama ; Tsuneo Yabusako
Palliative Care Research 2016;11(4):248-253
In order to understand the current status of terminal care for cancer patients and to investigate the significance of palliative care units (PCUs), we reviewed 414 cancer patients who died at our hospital during the 2-year period since October 2013 (PCU: 219 patients, general wards: 195 patients) based on their history of anticancer therapy and use of palliative care. Compared with PCU patients, those in the general wards were older, the diagnosis was delayed, and disease progression was more rapid. It was suggested that these factors had a negative impact on the opportunity to receive standard anticancer therapy and palliative care. Among the patients who received chemotherapy, the median interval from the final treatment to death was 110 days for those in the PCU while it was significantly shorter (55 days) for those in the general wards. Chemotherapy was administered within 1 month before death to 2% of patients in the PCU versus 32% of patients in the general wards, so the rate was much higher among the latter patients. In order to provide appropriate terminal care for cancer patients, the PCU seems to be important. Irrespective of the timing of cancer diagnosis and progression, it is important to increase general social awareness of palliative care and advanced care planning in order to promote the use of palliative care strategies.
10.Effects of Incentive Spirometry on Respiratory Motion in Healthy Subjects Using Cine Breathing Magnetic Resonance Imaging.
Toshiaki KOTANI ; Tsutomu AKAZAWA ; Tsuyoshi SAKUMA ; Shigeyuki NAGAYA ; Masaru SONODA ; Yuji TANAKA ; Takehide KATOGI ; Tetsuharu NEMOTO ; Shohei MINAMI
Annals of Rehabilitation Medicine 2015;39(3):360-365
		                        		
		                        			
		                        			OBJECTIVE: To investigate the effectiveness of incentive spirometry on respiratory motion in healthy subjects using cine breathing magnetic resonance imaging (MRI). METHODS: Ten non-smoking healthy subjects without any history of respiratory disease were studied. Subjects were asked to perform pulmonary training using incentive spirometry every day for two weeks. To assess the effectiveness of this training, pulmonary function tests and cine breathing MRI were performed before starting pulmonary training and two weeks after its completion. RESULTS: After training, there were significant improvements in vital capacity (VC) from 3.58+/-0.8 L to 3.74+/-0.8 L and in %VC from 107.4+/-10.8 to 112.1+/-8.2. Significant changes were observed in the right diaphragm motion, right chest wall motion, and left chest wall motion, which were increased from 55.7+/-9.6 mm to 63.4+/-10.2 mm, from 15.6+/-6.1 mm to 23.4+/-10.4 mm, and from 16.3+/-7.6 mm to 22.0+/-9.8 mm, respectively. CONCLUSION: Two weeks of training using incentive spirometry provided improvements in pulmonary function and respiratory motion, which suggested that incentive spirometry may be a useful preoperative modality for improving pulmonary function during the perioperative period.
		                        		
		                        		
		                        		
		                        			Diaphragm
		                        			;
		                        		
		                        			Magnetic Resonance Imaging*
		                        			;
		                        		
		                        			Motivation*
		                        			;
		                        		
		                        			Perioperative Period
		                        			;
		                        		
		                        			Respiration*
		                        			;
		                        		
		                        			Respiratory Function Tests
		                        			;
		                        		
		                        			Spirometry*
		                        			;
		                        		
		                        			Thoracic Wall
		                        			;
		                        		
		                        			Vital Capacity
		                        			
		                        		
		                        	
            

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