1.A Case of Mediastinal Cavernous Hemangioma
Yasushi KAWAHARADA ; Yoshihiko KIMURA ; Tsukasa TAKAHASHI
Journal of the Japanese Association of Rural Medicine 2025;73(5):449-452
		                        		
		                        			
		                        			A man in his 60s was found to have a tumor shadow in the anterior mediastinum on computed tomography (CT) performed for examination of other diseases. The tumor had poor contrast enhancement with some calcification and was considered benign. Therefore, the decision was made to observe the tumor. Six months later, CT showed enlargement of the lesion, and malignancy could not be ruled out, so mediastinal tumor removal was performed. Histopathological examination revealed a diagnosis of cavernous hemangioma. Mediastinal hemangioma is a rare disease, and it has been reported that there is a possibility of recurrence after surgery even in the absence of malignant findings, so complete surgical resection and follow-up observation are considered necessary. This report includes a literature review.
		                        		
		                        		
		                        		
		                        	
2.Usefulness of Endoscopic Imaging to Visualize Regional Alterations in Acid Secretion of Noncancerous Gastric Mucosa after Helicobacter pylori Eradication.
Kaname UNO ; Katsunori IIJIMA ; Yasuhiko ABE ; Tomoyuki KOIKE ; Yasushi TAKAHASHI ; Nobuyuki ARA ; Tooru SHIMOSEGAWA
Journal of Gastric Cancer 2016;16(3):152-160
		                        		
		                        			
		                        			PURPOSE: Endoscopic diagnosis of gastric cancer (GC) that emerges after eradication of Helicobacter pylori may be affected by unique morphological changes. Using comprehensive endoscopic imaging, which can reveal biological alterations in gastric mucosa after eradication, previous studies demonstrated that Congo red chromoendoscopy (CRE) might clearly show an acid non-secretory area (ANA) with malignant potential, while autofluorescence imaging (AFI) without drug injection or dyeing may achieve early detection or prediction of GC. We aimed to determine whether AFI might be an alternative to CRE for identification of high-risk areas of gastric carcinogenesis after eradication. MATERIALS AND METHODS: We included 27 sequential patients with metachronous GC detected during endoscopic surveillance for a mean of 82.8 months after curative endoscopic resection for primary GC and eradication. After their H. pylori infection status was evaluated by clinical interviews and ¹³C-urea breath tests, the consistency in the extension of corpus atrophy (e.g., open-type or closed-type atrophy) between AFI and CRE was investigated as a primary endpoint. RESULTS: Inconsistencies in atrophic extension between AFI and CRE were observed in 6 of 27 patients, although CRE revealed all GC cases in the ANA. Interobserver and intraobserver agreements in the evaluation of atrophic extension by AFI were significantly less than those for CRE. CONCLUSIONS: We demonstrated that AFI findings might be less reliable for the evaluation of gastric mucosa with malignant potential after eradication than CRE findings. Therefore, special attention should be paid when we clinically evaluate AFI findings of background gastric mucosa after eradication (University Hospital Medical Information Network Center registration number: UMIN000020849).
		                        		
		                        		
		                        		
		                        			Atrophy
		                        			;
		                        		
		                        			Breath Tests
		                        			;
		                        		
		                        			Carcinogenesis
		                        			;
		                        		
		                        			Congo Red
		                        			;
		                        		
		                        			Diagnosis
		                        			;
		                        		
		                        			Digestive System
		                        			;
		                        		
		                        			Endoscopy
		                        			;
		                        		
		                        			Gastric Mucosa*
		                        			;
		                        		
		                        			Helicobacter pylori*
		                        			;
		                        		
		                        			Helicobacter*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Information Services
		                        			;
		                        		
		                        			Optical Imaging
		                        			;
		                        		
		                        			Stomach Neoplasms
		                        			
		                        		
		                        	
3.Time-series relationship to achieve performance on rebound drop jump
Takuya Yoshida ; Soichiro Naka ; Yasushi Kariyama ; Ryohei Hayashi ; Kazutaka Takahashi ; Amane Zushi ; Koji Zushi
Japanese Journal of Physical Fitness and Sports Medicine 2016;65(5):479-489
The aim of this study was to demonstrate a time-series relationship in drop jump (DJ) from a pre-set state with improved performance. Twelve male college athletes performed a DJ from a height of 0.60 m. DJ performance was assessed with a DJ-index (jump height/contact time). Short-interval intracortical inhibition (SICI) was assessed as intracortical inhibitory circuit excitability in a pre-set state, calculated by using paired-pulse transcranial magnetic stimulation for the medial gastrocnemius muscle (MG). The H-reflex of the left MG and the ankle joint torque were calculated in the early phase of take-off. A significant correlation was shown between ⊿SICI during the pre-set state and the DJ index. Thus, we examined the relationships between phases, focusing on time-series relationships throughout the jump period. The results showed a significant correlation between ⊿SICI during the pre-set state and %H-reflex during the early phase of take-off, and peak ankle joint torque during take-off was also significantly correlated with %H-reflex during the early phase of take-off. A significant correlation was also demonstrated between ankle joint torque during take-off and the DJ-index. In conclusion, we observed a time-series relationship between DJ from a pre-set state and improved performance. A decrease of intracortical inhibitory circuit excitability in the pre-set state affects stretch-reflex facilitation during the early phase of take-off; stretch-reflex facilitation results in the development of a large force in the ankle joint during take-off, and this force develops ankle joint torque. These findings may be used to improve jump performance.
4.Ongoing increase in measles cases following importations, Japan, March 2014: times of challenge and opportunity
Takuri Takahashi ; Yuzo Arima ; Hitomi Kinoshita ; Kazuhiko Kanou ; Takehito Saitoh ; Tomimasa Sunagawa ; Hiroaki Ito ; Atsuhiro Kanayama ; AyakoTabuchi ; Kazutoshi Nakashima ; Yuichiro Yahata ; Takuya Yamagishi ; Tamie Sugawara ; Yasushi Ohkusa ; Tamano Matsui ; Satoru Arai ; Hiroshi Satoh ; Keiko Tanaka-Taya ; Katsuhiro Komase ; Makoto Takeda ; Kazunori Oishi
Western Pacific Surveillance and Response 2014;5(2):31-33
Since late 2013 through March 2014, Japan experienced a rapid rise in measles cases. Here, we briefly report on the ongoing situation and share preliminarily findings, concerns and challenges and the public health actions needed over the coming months and years.
Measles is a notifiable disease in Japan based on nationwide case-based surveillance legally requiring physicians to report all clinically diagnosed and laboratory-confirmed cases within seven days, but preferably within 24 hours. After a large outbreak in 2007–2008 (more than 11 000 cases reported in 2008 alone) and a goal of elimination by April 2015, a catch-up programme using the bivalent measles-rubella (MR) vaccine was offered for grades seven and 12 (ages 12–13 and 17–18 years) from April 2008 through March 2013. During this period, there was an estimated 97% decline in measles notifications, and the cumulative number of reported cases has been steadily declining over the last five years (732 cases in 2009, 447 cases in 2010, 439 cases in 2011, 293 cases in 2012 and 232 cases in 2013). However, since late 2013 through March 2014, the country experienced a resurgence only a year after a large rubella outbreak.
		                        		
		                        		
		                        		
		                        	
5.A Case of Hypertrophic Cardiomyopathy with Two Times Thromboembolism and Intraventricular Thrombus
Keitarou Koushi ; Yasushi Tutumi ; Osamu Monta ; Yosuke Takahashi ; Kimitoshi Kitani ; Tomohiko Sakamoto ; Hirokazu Ohashi
Japanese Journal of Cardiovascular Surgery 2010;39(3):137-140
		                        		
		                        			
		                        			We present a rare case of a 59-year-old-man with a diagnosis of hypertrophic cardiomyopathy (HCM) complicated with left ventricular thrombus. He was admitted to our hospital because of acute re-occlusion of the right brachial artery. Thrombectomy was performed and reperfusion was obtained. Anti-coagulation therapy was started from that day. Four days after surgery, echocardiography revealed mobile thrombus in left ventricular apical aneurysm that was not detected on admission. An emergency thrombectomy and left ventriculoplasty was performed. The patient was discharged 22 days after surgery in good condition.
		                        		
		                        		
		                        		
		                        	
6.Two Successful Proximal Reoperation Cases after Acute Type A Dissection Repair
Tomohiko Sakamoto ; Yasushi Tsutsumi ; Osamu Monta ; Keitaro Koshi ; Yousuke Takahashi ; Kimitoshi Kitani ; Hirokazu Ohashi
Japanese Journal of Cardiovascular Surgery 2010;39(6):355-358
		                        		
		                        			
		                        			We report 2 cases of successful proximal reoperations after acute type A dissection. Case 1 : A 53-year-old man underwent ascending aorta and aortic arch replacement and aortic valve re-suspension for acute type A dissection with aortic valve regurgitation in 1992. Thirteen years after the first operation, computed tomography demonstrated a Valsalva aneurysm (74 mm) and Doppler echocardiography showed moderate aortic valve regurgitation. Therefore, we performed an operation. We could not locate the dissection in the Valsalva sinus, and the aortic valve cusps had organic change. A David procedure was performed. The postoperative course was uneventful and he was discharged on the 19th postoperative day. Case 2 : A 65-year-old woman underwent ascending aorta replacement and aortic valve resuspension for acute type A dissection with aortic valve regurgitation in 1997, but 11 years after the first operation, computed tomography demonstrated a Valsalva aneurysm (55 mm) and arch aneurysm (65 mm) with stenosis of the innominate vein and she had facial and left arm edema. Doppler echocardiography showed moderate aortic valve regurgitation. We could not find the location of dissection in the Valsalva sinus or aortic arch, and aortic valve cusps had no organic change. A Bentall procedure and total arch replacement were performed and her postoperative course was uneventful.
		                        		
		                        		
		                        		
		                        	
7.Intracellular lipid accumulation and insulin resistance in skeletal muscle and liver
Yoshifumi Tamura ; Yasushi Tanaka ; Fumihiko Sato ; Jong Bock Choi ; Hirotaka Watada ; Masataka Niwa ; Junichiro Kinoshita ; Aiko Ooka ; Naoki Kumashiro ; Yasuhiro Igarashi ; Shinsuke Kyogoku ; Tadayuki Maehara ; Masahiko Kawasumi ; Takahisa Hirose ; Kouhei Takahashi ; Susumu Doi ; Shizuo Katamoto ; Ryuzo Kawamori
Japanese Journal of Physical Fitness and Sports Medicine 2007;56(1):34-34
		                        		
		                        		
		                        		
		                        	
8.A Case of Aortic Stenosis Secondary to Bicuspid Aortic Valve Associated with Klippel-Feil Syndrome Treated by Aortic Valve Replacement.
Shigeru Ohki ; Susumu Ishikawa ; Akio Ohtaki ; Toru Takahashi ; Yasushi Satoh ; Tetsuya Koyano ; Toshiharu Yamagishi ; Takashi Ogino ; Satoshi Ohki ; Yasuo Morishita
Japanese Journal of Cardiovascular Surgery 1997;26(3):200-203
		                        		
		                        			
		                        			A 52-year-old male was diagnosed as having aortic stenosis secondary to a bicuspid aortic valve associated with Klippel-Feil syndrome. Aortic valve replacement was successfully performed without any problems in the surgical or anesthesiological management. Only five such cases including ours, who underwent cardiac surgery have been reported. It is possible to perform cardiac surgery for patients with Klippel-Feil syndrome of their cardiac function can be well preserved.
		                        		
		                        		
		                        		
		                        	
9.Preoperative Pulmonary Arterial Pressure and Surgical Treatment of Secundum Atrial Septal Defect in Patients over 50 Years of Age.
Yutaka Hasegawa ; Susumu Ishikawa ; Akio Ohtaki ; Toru Takahashi ; Hideaki Ichikawa ; Yasushi Sato ; Tetsuya Koyano ; Masao Suzuki ; Masaaki Takao ; Yasuo Morishita
Japanese Journal of Cardiovascular Surgery 1996;25(5):285-289
		                        		
		                        			
		                        			The preoperative pulmonary arterial pressure of 38 patients aged over 50 undergoing surgical closure of a secundum atrial septal defect was studied. They were divided into three groups according to systolic pulmonary arterial pressure (PAP): Group A (PAP<30mmHg, n=14), Group B (30≤PAP<50mmHg, n=16), and Group C (PAP≥50mmHg, n=8). The mean age of group C patients was older than that of group A patients. With higher PAP, the Pp/Ps, Rp/Rs and cardiothoracic ratios increased, atrial fibrillation and heart failure (NYHA≥2) were more frequent, and PaO2 levels declined. There were no differences in left to right shunt ratio and Qp/Qs among the three groups. The PAP and Rp/Rs were under 70mmHg and 0.30, respectively in all patients. High pulmonary blood flow seems to be the cause of pulmonary hypertension in most elderly patients because PAP and Rp/Rs decreased after surgery in all groups. Findings of cardiomegaly and heart failure also improved after surgery. Surgical intervention is recommended even in elderly patients with a ASD.
		                        		
		                        		
		                        		
		                        	
10.A Case of Coronary Ostial Stenosis with Aortic Regurgitation Due to Syphilitic Aortitis.
Yasushi Sato ; Susumu Ishikawa ; Akio Ohtaki ; Kazuhiro Sakata ; Yoshimi Otani ; Toru Takahashi ; Ichiro Yoshida ; Yasuo Morishita
Japanese Journal of Cardiovascular Surgery 1995;24(3):175-177
		                        		
		                        			
		                        			A 50-year-old man was diagnosed as having aortic valve insufficiency, complete occlusion of the right coronary artery and 75% stenosis of the left main trunk due to syphilitic aortitis. Aortic valve replacement and coronary artery bypass grafting to three vessels were successfully performed. The selection of surgical procedures for the coronary lesion with syphilitic aortitis should be made carefully, since the progression of aortic root inflammation in the acute phase and the development of atherosclerotic changes are not preventable in the future. It is most important to select effective and safe surgical interventions, especially for patients with such a low cardiac function as our patient.
		                        		
		                        		
		                        		
		                        	
            

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