2.Autogenic Rib Graft for Atlantoaxial and Occipitocervical Fixation in Pediatric Patients
Akira MATSUMURA ; Takashi NAMIKAWA ; Minori KATO ; Yusuke HORI ; Masayoshi IWAMAE ; Noriaki HIDAKA ; Sadahiko KONISHI ; Hiroaki NAKAMURA
Asian Spine Journal 2019;13(5):713-720
STUDY DESIGN: Retrospective case series. PURPOSE: To evaluate surgical outcomes and effectiveness of an autogenic rib graft for upper cervical fixation in pediatric patients. OVERVIEW OF LITERATURE: Autogenic bone grafts have long been considered the ‘gold standard’ bone source for posterior cervical fusion in pediatric patients. However, there are some unsolved problems associated with donor-site morbidity and amount of bone grafting. METHODS: We studied five consecutive pediatric patients who underwent atlantoaxial fixation or occipitocervical fixation (OCF) using an autogenic rib graft with at least 2 years of follow-up (mean age, 9.8 years; mean follow-up period, 73.0 months). Two patients underwent OCF without screw-rod constructs and three patients with screw-rod constructs. Autogenic rib grafts were used in all patients. We evaluated the surgical outcomes including radiographic parameter, bony union, and perioperative complications. RESULTS: The atlantoaxial interval (ADI) was corrected from 11.6 to 6.0 mm, and the C1–2 angle was corrected −14.8° to 7.8°. The C2–7 angle was reduced from 31° to 9° spontaneously. Two patients with OCF required revision surgery due to loss of correction. Patients did not experience any complication associated with the donor sites (rib bone grafts). Six months postoperation X-rays clearly showed regeneration of the rib at the donor sites. Bony fusion was achieved in all patients; however, bony fusion occurred more slowly in patients without screw-rod constructs compared with patients with screw-rod constructs. Bone regeneration of the rib was observed in all patients with no complications at the donor site. CONCLUSIONS: Autogenic rib grafts have advantages of potential bone regeneration, high fusion rate, and low donor-site morbidity. In addition, a screw-rod construct provides better bony fusion in pediatric patients with OCF and atlantoaxial fixation.
3.Preoperative serum microRNAs as potential prognostic biomarkers in ovarian clear cell carcinoma
Kazuhiro SUZUKI ; Akira YOKOI ; Kosuke YOSHIDA ; Tomoyasu KATO ; Takahiro OCHIYA ; Yusuke YAMAMOTO ; Hiroaki KAJIYAMA
Journal of Gynecologic Oncology 2023;34(3):e34-
Objective:
Ovarian clear cell carcinoma (OCCC) is a subtype of epithelial ovarian carcinoma with poor prognosis. However, no effective biomarkers have been established for predicting unfavorable events, including recurrence and poor prognoses. Serum microRNAs (miRNAs) have been increasingly reported to be useful in predicting a patient’s condition and have been recognized as a potentially less-invasive source for liquid biopsy in cancer. Therefore, this study aimed to evaluate serum miRNA profiles from patients with OCCC and to establish biomarker for predicting the prognoses.
Methods:
The GSE106817, which included preoperative serum miRNA profiles of patients with ovarian tumors, was used, and clinical information was investigated. In all, 66 patients with OCCC were included, excluding those with other histological subtypes or insufficient prognostic information. Moreover, miRNA profiles of OCCC tissues were also examined.
Results:
The median follow-up period was 64.3 (8.0–153.3) months. Based on multivariable Cox regression analyses and the expression of miRNAs in OCCC tissues, miR-150-3p, miR-3195, and miR-7704 were selected as miRNA candidates associated with both progression-free survival (PFS) and overall survival (OS). Then, the prognostic index was calculated based on expression values of 3 serum miRNAs. Kaplan-Meier survival analysis indicated that the prognostic index was significantly predictive of PFS and OS (p=0.004 and p=0.012, respectively).
Conclusion
Preoperative serum miRNA profiles of miR-150-3p, miR-3195, and miR-7704 can be used to potentially predict the prognosis of patients with OCCC.
4.Surgical Outcomes of Multilevel Posterior Lumbar Interbody Fusion versus Lateral Lumbar Interbody Fusion for the Correction of Adult Spinal Deformity: A Comparative Clinical Study
Masayoshi IWAMAE ; Akira MATSUMURA ; Takashi NAMIKAWA ; Minori KATO ; Yusuke HORI ; Akito YABU ; Yuta SAWADA ; Noriaki HIDAKA ; Hiroaki NAKAMURA
Asian Spine Journal 2020;14(4):421-429
Methods:
We retrospectively reviewed 31 ASD patients who underwent multilevel LIF combined with PCO (LIF group, n=14) or multilevel PLIF (PLIF group, n=17) and with a minimum 2-year follow-up. In the comparison between LIF and PLIF groups, their mean age at surgery was 69.4 vs. 61.8 years while the mean follow-up period was 29.2 vs. 59.3 months. We evaluated the transition of pelvic incidence–lumbar lordosis (PI–LL) and disc angle (DA) in the LIF group, in fulcrum backward bending (FBB), after LIF and after posterior spinal fusion (PSF) with PCO. The spinopelvic radiographic parameters were compared between LIF and PLIF groups.
Results:
Compared with the PLIF group, the LIF group had less blood loss and comparable surgical outcomes with respect to radiographic data, health-related quality of life scores and surgical time. In the LIF group, the mean DA and PI–LL were unchanged after LIF (DA, 5.8°; PI–LL, 15°) compared with the values using FBB (DA, 4.3°; PI–LL, 15°) and improved significantly after PSF with PCO (DA, 8.1°; PI–LL, 0°).
Conclusions
In the surgical treatment of ASD, multilevel LIF is less invasive than multilevel PLIF and combination of LIF and PCO would be necessary for optimal sagittal correction in patients with rigid deformity.
5.The Current Strategy for Managing Pancreatic Neuroendocrine Tumors in Multiple Endocrine Neoplasia Type 1.
Yusuke NIINA ; Nao FUJIMORI ; Taichi NAKAMURA ; Hisato IGARASHI ; Takamasa OONO ; Kazuhiko NAKAMURA ; Masaki KATO ; Robert T JENSEN ; Tetsuhide ITO ; Ryoichi TAKAYANAGI
Gut and Liver 2012;6(3):287-294
Multiple endocrine neoplasia type 1 (MEN1) is an inherited autosomal dominant disease presenting with pancreatic neuroendocrine tumors (pNETs), parathyroid tumors, or pituitary tumors. Using the PubMed database, we reviewed the literature on information regarding the proper diagnosis and treatment of MEN1-associated pNET. Many cases of MEN1-associated pNET are functioning pNETs. Gastrinomas and insulinomas tend to occur frequently in the duodenum and pancreas, respectively. In addition to diagnostic imaging, the selective arterial secretagogue injection test (SASI test) is useful for localizing functioning pNET. The standard treatment is surgical resection. However, in the case of a functioning pNET, the tumor should first be accurately located using the SASI test before an appropriate surgical method is selected. In cases of a MEN1-associated non-functioning pNET that exceeds 2 cm in diameter, the incidence of distant metastasis is significantly increased, and surgery is recommended. In cases of unresectable pNET, a somatostatin analog has been shown to demonstrate antitumor effects and is considered to be a promising treatment. In addition, molecular-targeted drugs have recently been found to be effective in phase III clinical trials.
Diagnostic Imaging
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Duodenum
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Gastrinoma
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Incidence
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Insulinoma
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Multiple Endocrine Neoplasia
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Multiple Endocrine Neoplasia Type 1
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Neoplasm Metastasis
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Neuroectodermal Tumors, Primitive
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Neuroendocrine Tumors
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Pancreas
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Pituitary Neoplasms
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Somatostatin
6.Management of Chronic Expanding Haematoma Using Triamcinolone after Latissimus Dorsi Flap Harvesting.
Mariko HAMADA ; Yusuke SHIMIZU ; Noriko ARAMAKI-HATTORI ; Tatsuya KATO ; Keiko TAKADA ; Marie AOKI ; Kazuo KISHI ; Tomohisa NAGASAO
Archives of Plastic Surgery 2015;42(2):218-222
Chronic expanding haematoma (CEH) is a rare type of haematoma that enlarges slowly and continuously without coagulation. It can occur following surgery because of shear stress-induced bleeding in the scar tissue between the subcutaneous fat and fascia. We present three cases of large chronic CEH that were successfully treated with triamcinolone injections. Three female patients developed large chronic CEH at 9 months, 5 years, and 6 years, respectively, after latissimus dorsi flap harvesting for breast reconstruction. Although the condition did not improve after multiple sessions of haematoma aspiration in the first two patients, it resolved following a single 40-mg triamcinolone injection along with appropriate compression dressing for several weeks. In the third patient, triamcinolone was injected immediately after the initial aspiration of the haematoma, and the condition improved considerably. There were no side effects in any of the patients. To the best of our knowledge, this is the first report of successful treatment of large CEH using triamcinolone. Therefore, we suggest that triamcinolone injections be considered for the treatment of CEH.
Bandages
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Cicatrix
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Fascia
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Female
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Free Tissue Flaps
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Hemorrhage
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Humans
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Mammaplasty
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Seroma
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Subcutaneous Fat
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Superficial Back Muscles*
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Triamcinolone*
7.An Approach to Delivering Prophylactic Rehabilitation Interventions to Individuals in a Rural Area
Yusuke KATO ; Manabu HORI ; Nobuyuki HAYASHI ; Hideto TSUKAMOTO
Journal of the Japanese Association of Rural Medicine 2020;68(5):623-
We started a prophylactic rehabilitation class from fiscal year 2016 and 1 year later we identified 4 problems, namely, a small number of participants (mean, 4.6), a small male population (ratio of 1 male to 9 females), no follow up because only 1 session was given per area, and a low home exercise rate (42.5%). For the class in fiscal year 2017, discussions were held with the comprehensive regional support center. Accordingly, relevant information was disseminated via public relations magazines, neighborhood circulars, and the local government to address the problems with the number of participants and sex ratio, and a series of 4 sessions were held per area to address the problems with the lack of follow-up and continuation of home exercise. Objective assessments (grip strength, one-leg standing, and knee extension strength) were included in the physical assessment. Through these measures, based on questionnaire results, we found that there was an increase in the number of participants and that more participants continued the exercise at home after the class was increased.
8.A simple technique for repositioning of the mandible by a surgical guide prepared using a three-dimensional model after segmental mandibulectomy.
Akinori FUNAYAMA ; Taku KOJIMA ; Michiko YOSHIZAWA ; Toshihiko MIKAMI ; Shohei KANEMARU ; Kanae NIIMI ; Yohei ODA ; Yusuke KATO ; Tadaharu KOBAYASHI
Maxillofacial Plastic and Reconstructive Surgery 2017;39(6):16-
BACKGROUND: Mandibular reconstruction is performed after segmental mandibulectomy, and precise repositioning of the condylar head in the temporomandibular fossa is essential for maintaining preoperative occlusion. METHODS: In cases without involvement of soft tissue around the mandibular bone, the autopolymer resin in a soft state is pressed against the lower border of the mandible and buccal and lingual sides of the 3D model on the excised side. After hardening, it is shaved with a carbide bar to make the proximal and distal parts parallel to the resected surface in order to determine the direction of mandibular resection. On the other hand, in cases that require resection of soft tissue around the mandible such as cases of a malignant tumor, right and left mandibular rami of the 3D model are connected with the autopolymer resin to keep the preoperative position between proximal and distal segments before surgical simulation. The device is made to fit the lower border of the anterior mandible and the posterior border of the mandibular ramus. The device has a U-shaped handle so that adaptation of the device will not interfere with the soft tissue to be removed and has holes to be fixed on the mandible with screws. RESULTS: We successfully performed the planned accurate segmental mandibulectomy and the precise repositioning of the condylar head by the device. CONCLUSIONS: The present technique and device that we developed proved to be simple and useful for restoring the preoperative condylar head positioning in the temporomandibular fossa and the precise resection of the mandible.
Hand
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Head
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Mandible*
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Mandibular Osteotomy*
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Mandibular Reconstruction
9.Change of Gastric Emptying With Chewing Gum: Evaluation Using a Continuous Real-Time 13C Breath Test (BreathID System).
Yasunari SAKAMOTO ; Shingo KATO ; Yusuke SEKINO ; Eiji SAKAI ; Takashi UCHIYAMA ; Hiroshi IIDA ; Kunihiro HOSONO ; Hiroki ENDO ; Koji FUJITA ; Tomoko KOIDE ; Hirokazu TAKAHASHI ; Masato YONEDA ; Chikako TOKORO ; Ayumu GOTO ; Yasunobu ABE ; Noritoshi KOBAYASHI ; Kensuke KUBOTA ; Shin MAEDA ; Atsushi NAKAJIMA ; Masahiko INAMORI
Journal of Neurogastroenterology and Motility 2011;17(2):174-179
BACKGROUND/AIMS: There are few reports on the correlation between chewing gum and the gastrointestinal functions. But previous report showed use of chewing gum to be an effective method for controlling gastrointestinal symptoms. The aim of this study was to determine the correlation between chewing gum and gastric emptying using the continuous real time 13C breath test (BreathID system). METHODS: Ten healthy male volunteers participated in this randomized, 2-way crossover study. The subjects fasted overnight and were randomly assigned to chewing gum (Xylish, 2-3/1 tablet) for an hour following intake of a test meal (200 kcal/200 mL) or intake of the test meal alone. Gastric emptying was monitored for 4 hours after administration of the test meal by the 13C-acetic acid breath test performed continually using the BreathID system. RESULTS: No significant differences in the calculated parameters, namely, T1/2 (median, 111.82 vs 109.26 minutes; P = 0.575), Tlag (median, 53.28 vs 56.53 minutes; P = 0.333), gastric emptying coefficient (median, 3.58 vs 3.65; P = 0.285), regression-estimated constant beta (median, 1.85 vs 1.80; P = 0.575) and regression-estimated constant kappa (median, 0.61 vs 0.62; P = 0.959) were observed between the test meal alone group and the test meal and chewing gum group. CONCLUSIONS: This study showed that chewing gum had no effect on the rate of gastric emptying. Therefore, since chewing gum did not enhance the speed of gastric emptying, it may ameliorate gastrointestinal symptoms through other mechanisms, such as saliva and autonomic nervous system.
Autonomic Nervous System
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Breath Tests
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Chewing Gum
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Cross-Over Studies
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Gastric Emptying
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Humans
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Male
;
Mastication
;
Meals
;
Saliva
10.A Case of Mitral Mechanical Valve Thrombosis after Switching to Edoxaban
Yasuyuki KANNO ; Yasuyuki KATO ; Hidetaka YAMAUCHI ; Taiyo JINNO ; Yusuke DATE ; Kenichi SASAKI ; Atsushi SHIMIZU ; Hiroshi KIYAMA
Japanese Journal of Cardiovascular Surgery 2020;49(5):288-290
A 65-year-old man who had been taking warfarin for a mitral mechanical valve, was transported to our hospital for acute heart failure 3 months after switching to edoxaban. The fluoroscopy revealed restriction of the mechanical valve opening, and the catheterization showed an increased pressure gradient of the mechanical valve. The patient was diagnosed with valve thrombosis, and emergency redo mitral valve replacement was performed. The patient recovered well without complication. In cases with mechanical heart valves, sufficient explanation and education about warfarin administration is mandatory for patients' home doctors as well as patients and their families.