1.Benefits and risks of diverting stoma creation during rectal cancer surgery
Masaya KAWAI ; Kazuhiro SAKAMOTO ; Kumpei HONJO ; Yu OKAZAWA ; Rina TAKAHASHI ; Shingo KAWANO ; Shinya MUNAKATA ; Kiichi SUGIMOTO ; Shun ISHIYAMA ; Makoto TAKAHASHI ; Yutaka KOJIMA ; Yuichi TOMIKI
Annals of Coloproctology 2024;40(5):467-473
Purpose:
A consensus has been reached regarding diverting stoma (DS) construction in rectal cancer surgery to avoid reoperation related to anastomotic leakage. However, the incidence of stoma-related complications (SRCs) remains high. In this study, we examined the perioperative outcomes of DS construction in patients who underwent sphincter-preserving surgery for rectal cancer.
Methods:
We included 400 participants who underwent radical sphincter-preserving surgery for rectal cancer between 2005 and 2017. These participants were divided into the DS (+) and DS (–) groups, and the outcomes, including postoperative complications, were compared.
Results:
The incidence of ileus was higher in the DS (+) group than in the DS (–) group (P<0.01); however, no patients in the DS (+) group showed grade 3 anastomotic leakage. Furthermore, early SRCs were observed in 33 patients (21.6%) and bowel obstruction-related stoma outlet syndrome occurred in 19 patients (12.4%). There was no significant intergroup difference in the incidence of grade 3b postoperative complications. However, the most common reason for reoperation was different in the 2 groups: anastomotic leakage in 91.7% of patients with grade 3b postoperative complications in the DS (–) group, and SRCs in 85.7% of patients with grade 3b postoperative complications in the DS (+) group.
Conclusion
Patients with DS showed higher incidence rates of overall postoperative complications, severe postoperative complications (grade 3), and bowel obstruction, including stoma outlet syndrome, than patients without DS. Therefore, it is important to construct an appropriate DS to avoid SRCs and to be more selective in assigning patients for DS construction.
2.Potential Applicability of Local Resection With Prophylactic Left Gastric Artery Basin Dissection for Early-Stage Gastric Cancer in the Upper Third of the Stomach
Yoshimasa AKASHI ; Koichi OGAWA ; Katsuji HISAKURA ; Tsuyoshi ENOMOTO ; Yusuke OHARA ; Yohei OWADA ; Shinji HASHIMOTO ; Kazuhiro TAKAHASHI ; Osamu SHIMOMURA ; Manami DOI ; Yoshihiro MIYAZAKI ; Kinji FURUYA ; Shoko MOUE ; Tatsuya ODA
Journal of Gastric Cancer 2022;22(3):184-196
Purpose:
Total or proximal gastrectomy of the upper-third early gastric cancer (u-EGC) often causes severe post-gastrectomy syndrome, suggesting that these procedures are extremely invasive for patients without pathologically positive lymph node (LN) metastasis. This study aimed to evaluate the clinical applicability of a stomach function-preserving surgery, local resection (LR), with prophylactic left gastric artery (LGA)-basin dissection (LGA-BD).
Materials and Methods:
The data of patients with u-EGC (pathologically diagnosed as T1) were retrospectively analyzed. Total gastrectomy was performed in 30 patients, proximal gastrectomy in 45, and subtotal gastrectomy in 6; the LN status was evaluated assuming that the patients had already underwent LR + LGA-BD. This procedure was considered feasible in patients without LN metastases or in patients with cancer in the LGA basin. The reproducibility of the results was also evaluated using an external validation dataset.
Results:
Of the 82 eligible patients, 79 (96.3%) were cured after undergoing LR + LGA-BD, 74 (90.2%) were pathologically negative for LN metastases, and 5 (6.1%) had LN metastases, but these findings were only observed in the LGA basin. Similarly, of the 406 eligible tumors in the validation dataset, 396 (97.5%) were potentially curative. Tumors in the lesser curvature, post-endoscopic resection status, and small tumors (<20 mm) were considered to be stronger indicators of LR + LGA-BD as all subpopulation cases met our feasibility criteria.
Conclusions
More than 95% of the patients with u-EGC might be eligible for LR + LGA-BD.This function-preserving procedure may contribute to the development of u-EGC without pathological LN metastases, especially for tumors located at the lesser curvature.
3.Effectiveness of Endoscopic Sclerotherapy with Aluminum Potassium Sulfate and Tannic Acid as a Non-Surgical Treatment for Internal Hemorrhoids
Yuichi TOMIKI ; Jun AOKI ; Shunsuke MOTEGI ; Rina TAKAHASHI ; Toshiaki HAGIWARA ; Yu OKAZAWA ; Kosuke MIZUKOSHI ; Masaya KAWAI ; Shinya MUNAKATA ; Shun ISHIYAMA ; Kiichi SUGIMOTO ; Kazuhiro SAKAMOTO
Clinical Endoscopy 2019;52(6):581-587
BACKGROUND/AIMS: Sclerotherapy with aluminum potassium sulfate and tannic acid (ALTA) has a potent effect on internal hemorrhoids. In this retrospective study, we compared the effects of endoscopic ALTA therapy and standard ALTA therapy.METHODS: We investigated patients who underwent treatment for internal hemorrhoids at our institution between 2014 and 2016. They were divided into a standard ALTA group (n=33, treated using proctoscopy) and an endoscopic ALTA group (n=48). We compared the clinical findings between the 2 groups.RESULTS: There were no intergroup differences in background factors. The mean ALTA dose was 21.9±7.2 mL and 17.8±3.4 mL in the standard and endoscopic ALTA groups, respectively (p<0.01). Adverse events occurred in 4 patients (12.1%) from the standard ALTA group and 6 patients (12.5%) from the endoscopic ALTA group. In both groups, the patients reported good satisfaction with the therapeutic effect at 1 month after the procedure. Hemorrhoids recurred in 2 patients (6.3%) from the standard ALTA group and 4 patients (8.3%) from the endoscopic ALTA group.CONCLUSIONS: Endoscopic ALTA sclerotherapy is equivalent to standard ALTA therapy in terms of efficacy, adverse events, and recurrence. Therefore, it is a useful non-surgical option for patients with internal hemorrhoids who prefer a less invasive treatment.
Aluminum
;
Endoscopy
;
Hemorrhoids
;
Humans
;
Potassium
;
Recurrence
;
Retrospective Studies
;
Sclerotherapy
;
Tannins
4.En Bloc Spondylectomy for Spinal Metastases: Detailed Oncological Outcomes at a Minimum of 2 Years after Surgery
Masayuki OHASHI ; Toru HIRANO ; Kei WATANABE ; Kazuhiro HASEGAWA ; Takui ITO ; Keiichi KATSUMI ; Hirokazu SHOJI ; Tatsuki MIZOUCHI ; Ikuko TAKAHASHI ; Takao HOMMA ; Naoto ENDO
Asian Spine Journal 2019;13(2):296-304
STUDY DESIGN: Retrospective case series. PURPOSE: To investigate the oncological outcomes, including distant relapse, after en bloc spondylectomy (EBS) for spinal metastases in patients with a minimum of 2-year follow-up. OVERVIEW OF LITERATURE: Although EBS has been reported to be locally curative and extend survival in select patients with spinal metastases, detailed reports regarding the control of distant relapse after EBS are lacking. METHODS: We conducted a retrospective review of 18 consecutive patients (median age at EBS, 62 years; range, 40–77 years) who underwent EBS for spinal metastases between 1991 and 2015. The primary cancer sites included the kidney (n=7), thyroid (n=4), liver (n=3), and other locations (n=4). Survival rates were estimated using the Kaplan–Meier method, and groups were compared using the log-rank method. RESULTS: The median operative time and intraoperative blood loss were 767.5 minutes and 2,375 g, respectively. Twelve patients (66.7%) experienced perioperative complications. Five patients (27.8%) experienced local recurrence of the tumor at a median of 12.5 months after EBS, four of which had a positive resection margin status. Thirteen patients (72.2%) experienced distant relapse at a median of 21 months after EBS. The estimated median survival period after distant relapse was 20 months (95% confidence interval, 0.71–39.29 months). No association was found between resection margin status and distant relapse. Overall, the 2-year, 5-year, and 10-year survival rates after EBS were 72.2%, 48.8%, and 27.1%, respectively. Importantly, the era in which EBS was performed did not impact the oncological outcomes. CONCLUSIONS: Our results suggest that EBS by itself, even if margin-free, cannot prevent further dissemination, which occurred in >70% of patients at a median of 21 months after EBS. These results should be considered and conveyed to patients for clinical decision-making.
Clinical Decision-Making
;
Follow-Up Studies
;
Humans
;
Kidney
;
Liver
;
Methods
;
Neoplasm Metastasis
;
Operative Time
;
Recurrence
;
Retrospective Studies
;
Spine
;
Survival Rate
;
Thyroid Gland
5.The Association between Continuation of Home Medical Care and Utilization of Other Home Care Services for Older People with Long-term Care Insurance in Japan
Kazuhiro ABE ; Yasuki KOBAYASHI ; Akira KAWAMURA ; Haruko NOGUCHI ; Hideto TAKAHASHI ; Nanako TAMIYA
An Official Journal of the Japan Primary Care Association 2018;41(1):2-7
Background: We investigated how individual home care services by nurses, care workers, and therapists at patients' homes are related with the continuation of home medical care service provided by medical doctors.Methods: This research retrospectively analyzed primary insured patients registered with the Japanese long-term care insurance system who had newly started using home medical care service, and whose care level was between 1 and 5 according to national long-term care insurance system claims data. We performed multivariable logistic regression analysis to evaluate patients who used home medical care continuously for >3 months and the utilization of each home care service adjusted for patient age, gender, and care level.Results: A total of 26,590 patients were analyzed. Multivariable analysis revealed that the following home care services were associated with longer continuation of home medical care service compared with home medical care alone: day service (OR, 2.10; 95% CI, 1.98-2.23), home help service (1.91; 1.81-2.01), day care including rehabilitation (1.88; 1.69-2.10), home-visit rehabilitation (1.49; 1.31-1.69), and home-visit nursing (1.23; 1.16-1.31).Conclusions: Our results demonstrated a correlation between utilization of home care services and longer continuation of home medical care from the start. These findings may help medical doctors who provide home medical care service collaborate with other home care services by nurses, care workers, and in-home care therapists.
6.Use of One-step Nucleic Acid Amplification® and ultrasonography to predict metastasis in non-sentinel lymph node in breast cancer
Taeko KANAMORI ; Satoru FURUTA ; Youko SANADA ; Sho YAGI ; Kazuhiro ISHIHARA ; Harumi TAKAHASHI ; Atsuko YAMADA ; Hidenori TANAKA ; Satoru YAMAMOTO
Journal of the Japanese Association of Rural Medicine 2016;64(6):1049-1053
Although axillary lymph node dissection (ALND) is conventionally indicated for metastasis in the sentinel lymph node (SLN), the omission of ALND is being discussed more often in recent years. However, because of the lack of specific guidelines, it is unclear which cases should be treated without ALND. In this study, we performed one-step nucleic acid amplification of the SLN with metastasis to determine the total tumor load (TTL), that is, the number of cytokeratin (CK) 19 mRNA copies. After ultrasonography (US) of ALN, the ultrasonographic findings were combined with TTL to rate SLN metastasis. In the rating, a total score was obtained by assigning 1 point each for (a) TTL of ≥15000 copies/μL, (b) US findings of a long-to-short LN diameter ratio of ≤2, and (c) US findings of no echogenic hilus. We then investigated the association between the total score and metastasis in the non-SLN. Results showed that while 87.5% (5/6) of patients with positive non-SLN scored ≥2 points, only 3.1% (1/34) of patients with negative non-SLN did so, suggesting that a total copy number of CK19 mRNA, US findings of a long-to-short LN diameter ratio, and the presence/absence of echogenic hilus are important predictors for non-SLN metastasis. This novel scoring system is expected to help determine which patients need ALND or what postoperative therapy is necessary.
7.CAD/CAM splint based on soft tissue 3D simulation for treatment of facial asymmetry.
Kazuhiro TOMINAGA ; Manabu HABU ; Hiroki TSURUSHIMA ; Osamu TAKAHASHI ; Izumi YOSHIOKA
Maxillofacial Plastic and Reconstructive Surgery 2016;38(1):4-
BACKGROUND: Most cases of facial asymmetry involve yaw deformity, and determination of the yaw correction level is very difficult. METHODS: We use three-dimensional soft tissue simulation to determine the yaw correction level. This three-dimensional simulation is based on the addition of cephalometric prediction to gradual yaw correction. Optimal yaw correction is determined visually, and an intermediate splint is fabricated with computer-aided design and computer-aided manufacturing. Application of positioning devices and the performance of horseshoe osteotomy are advisable. RESULTS: With this procedure, accurate repositioning of jaws was confirmed and patients obtained fairly good facial contour. CONCLUSIONS: This procedure is a promising method for a widespread, predictable treatment of facial asymmetry.
Computer-Aided Design
;
Congenital Abnormalities
;
Facial Asymmetry*
;
Humans
;
Jaw
;
Methods
;
Orthognathic Surgery
;
Osteotomy
;
Splints*
8.Association between number of teeth present and mandibular cortical erosion in Japanese men and women aged 40 years and older: A cross-sectional study.
Mizuna TAKAHASHI ; Keiichi UCHIDA ; Shinichiro YAMADA ; Noriyuki SUGINO ; Yukihito HIGASHI ; Kazuhiro YAMADA ; Akira TAGUCHI
Osteoporosis and Sarcopenia 2016;2(4):250-255
Mandibular cortical erosion detected on dental panoramic radiographs is associated with increased risk of osteoporosis in older adults. Additionally, many reports have demonstrated an association between decreased number of teeth present and osteoporosis. However, whether mandibular cortical erosion is associated with a decreased number of teeth remains unclear. The purpose of this study, therefore, was to clarify the association between mandibular cortical erosion and number of teeth present in Japanese men and women aged 40 years and older. Among patients who visited our university hospital and underwent dental panoramic radiography for the diagnosis of dental diseases, 839 patients (293 men and 546 women) aged 40–89 years (mean [SD], 63.7 [10.6] years) participated in this study. Multiple regression analysis revealed that mildly to moderately eroded cortex (p = 0.007) and severe eroded cortex (p < 0.001) were significantly associated with a decreased number of teeth present. Analysis of covariance adjusted for covariates revealed a significant association between mandibular cortical erosion category and number of teeth present (p < 0.001). Subjects with a severely eroded cortex had significantly fewer teeth present than those with a normal cortex (mean [SE], 20.7 [0.5] vs. 23.4 [0.3], p < 0.001) or mildly to moderately eroded cortex (22.2 [0.4], p = 0.04). Subjects with a mildly to moderately eroded cortex had significantly fewer teeth present than those with a normal cortex (p = 0.033). Our results suggest the significant association between mandibular cortical erosion and number of teeth present in Japanese men and women aged 40 years and older.
Adult
;
Asian Continental Ancestry Group*
;
Cross-Sectional Studies*
;
Cytochrome P-450 CYP1A1
;
Diagnosis
;
Female
;
Humans
;
Male
;
Mandible
;
Osteoporosis
;
Radiography, Panoramic
;
Stomatognathic Diseases
;
Tooth*
9.A Case of Sigmoid Colon Cancer with Solitary Metastasis to the Abdominal Wall
Kazuhiro ISHIHARA ; Chika TAKAO ; Hidenori TANAKA ; Harumi TAKAHASHI ; Satoru YAMAMOTO
Journal of the Japanese Association of Rural Medicine 2015;64(2):166-171
The patient is a women in her 60s. After medical examinations, she was told that the result of fecal occult blood reaction testing was positive. Moreover, colonoscopy found type 2 cancer in her sigmoid colon. The patient underwent sigmoidectomy. The 3D dissection of lymph node and colorectal side-to-end anastomosis were performed. Pathologically, the case was diagnosed as moderately differentiated adenocarcinoma (stage II). Adjuvant chemotherapy was not given. During follow-up observation, the tumor marker levels were elevated above normal. A work-up revealed a recurrence of the cancer on the abdominal wall. The lesion was surgically removed with a margin of about 2 cm from the tumor secured. Pathological diagnosis of this recurrent case was not inconsistent with the previous diagnosis of sigmoid colon cancer. As the relapse was thought to be due to the implantation of cancer cells in the abdominal wall, we need to follow the surgical procedure with scrupulous care and exercise the utmost precaution to protect incision wound on the abdominal wall.
10.Food and Drug Interactions: Effect of Acanthopanax senticosus Harms on CYP3A4 and CYP2C9 Activities (Part 3)
Tsunehisa TAKAHASHI ; Masaki IGARASHI ; Takashi SATOH ; Kazuhiro WATANABE
Japanese Journal of Complementary and Alternative Medicine 2014;11(1):17-24
Objective: By using human liver microsomes (HLM), we analyzed the effects of 14 known components of A.senticosus Harms on the activities of CYP2C9 and CYP3A4.
Methods and Results: Sesamin and quercetin inhibited both enzyme activities, whereas quercitrin strongly inhibited CYP3A4 activity. The 50% inhibitory concentrations (IC50s) of sesamin and quercetin on CYP2C9 activity were approximately 124- and 59-fold higher and the IC50s of sesamin, quercetin, and quercitrin on CYP3A4 activity were approximately 427-, 135-, and 22-fold higher than that of A. senticosus Harms extract (ASE), respectively. All these components inhibited both CYP3A4 and CYP2C9 in a non-competitive manner. However, these components are present in small amounts in ASE.
Conclusion: Therefore, the food-drug interactions caused by A. senticosus Harms are presumed to be due to the additive or synergistic interaction of these components or the other existing components, including their metabolites.


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