Publications by authors named "Kentaro Kishi"

Article Synopsis
  • The study aimed to compare the effects of growth hormone (GH) treatment on height in children with short stature born small for gestational age (SGA-SS) versus those with growth hormone deficiency (GHD).
  • Researchers analyzed data from children treated at Tanaka Growth Clinic, looking at height changes, GH dosages, and other clinical metrics between the two groups.
  • Results showed that while SGA-SS children had better height velocity during treatment due to younger age and higher GH doses, their expected adult height might not reach the standards seen in GHD patients treated in Western countries.
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Background: Conversion surgery (CS) is a highly anticipated strategy for stage IV advanced gastric cancer (AGC) with a good response to chemotherapy. However, prognostic factors limiting R0 resection remain unclear. In this multi-institutional study, we investigated the clinical outcomes of CS for stage IV AGC and the prognostic factors of CS-limiting R0 resection and analyzed them according to metastatic patterns.

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Purpose: In Japan, gastrectomy with D2 lymph node dissection and postoperative adjuvant chemotherapy are the standard treatments for locally advanced gastric cancer. Neoadjuvant chemotherapy (NAC) is not affected by postgastrectomy syndromes or postoperative complications. This multicenter retrospective study investigated the prognostic factors and significance of postoperative adjuvant chemotherapy in patients with advanced gastric cancer who underwent NAC followed by gastrectomy.

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Article Synopsis
  • A patient in his seventies was diagnosed with pancreatic cancer after imaging revealed a 2 cm mass, leading to a pancreaticoduodenectomy following neoadjuvant chemotherapy.
  • During surgery, complications arose with weak arterial pulsation, prompting further investigation that revealed celiac artery stenosis, necessitating urgent ligament release.
  • Post-surgery, the patient's liver enzymes improved and he experienced a mild pancreatic leak, but he was discharged after 49 days and has shown no signs of cancer recurrence 9 months later while on adjuvant chemotherapy.
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Background: No reliable marker has been identified to predict postoperative recurrence of gastric cancer. We designed a clinical trial to investigate the utility of serum NY-ESO-1 antibody responses as a predictive marker for postoperative recurrence in gastric cancer.

Methods: A multicenter prospective study was conducted between 2012 and 2021.

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  • A study assessed the impact of a daily elemental diet (ED) on skeletal muscle mass loss in gastric cancer patients after surgery, following previous findings that it reduced body weight loss postoperatively.
  • The analysis utilized data from patients undergoing total or distal gastrectomy and compared changes in skeletal muscle mass index (%SMI) between those on the ED and control groups one year later.
  • Results showed that while the ED group had a lower median %SMI loss than the control group, the difference was not statistically significant, indicating no clear benefit of the diet in preventing muscle loss post-gastrectomy.
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Introduction: Contour maps enable risk classification of GIST recurrence in individual patients within 10 postoperative years. Although contour maps have been referred to in Japanese guidelines, their usefulness and role in determining indications for adjuvant therapy is still unclear in Japanese patients. The aims of this study are to investigate the validity of contour maps in Japanese patients with GIST and explore the new strategy for adjuvant therapy.

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Background: Application of laparoscopic gastrectomy (LG) to advanced gastric cancer is still controversial due to lack of sufficient surgical and oncological outcomes. The purpose of this study was to elucidate the feasibility of LG for advanced gastric cancer by multicenter prospective cohort study.

Methods: A total of 98 patients with clinical stage II or III gastric cancer from 8 institutes were analyzed in this study.

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Article Synopsis
  • - The case discusses a 68-year-old man with pancreatic cancer that affected the common hepatic artery and had an unusual right hepatic artery structure, emphasizing the need for careful evaluation of blood flow for surgical decisions.
  • - After experiencing abdominal discomfort and being diagnosed with locally advanced pancreatic cancer, the patient received chemoradiotherapy to shrink the tumor.
  • - Following treatment, he underwent a specialized surgery called distal pancreatectomy with celiac axis resection (DP-CAR), which involved removing parts of connected arteries, and although he had some recovery issues, he was discharged on day 36 after surgery.
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A 54-year-old woman visited to a doctor nearby medical clinic complaining of loss of appetite. She was diagnosed with right hydronephrosis on abdominal ultrasonography, and referred to our hospital for further examination. Contrast abdominal computed tomography(CT)revealed that a 6.

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A 79-year-old man visited the hospital because of constipation. Colonoscopy showed a transverse colon carcinoma. Dynamic CT showed a renal neoplastic lesion and 2 lesions in the liver with early staining and late wash out, and the liver lesions showed ring enhancement on EOB-MRI.

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Purpose: Osteoporosis leads to fragility fractures and is a major public health problem. We conducted this study to analyze the prevalence of and risk factors for osteoporosis after gastrectomy in older patients.

Methods: This multicenter prospective trial comprised older patients without recurrence of gastric cancer for > 3 years after curative surgery.

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Article Synopsis
  • There is limited real-world data on the effectiveness of third- or later-line (3L +) treatments for HER2-positive gastric cancer in Japan, which this study aimed to address by evaluating nivolumab, irinotecan, and trifluridine/tipiracil (FTD/TPI) as monotherapy options.
  • The study included 117 patients, with nivolumab being the most frequently used treatment, and found median overall survival (OS) of 6.2 months and low objective response rates (ORR) of 9%.
  • Results indicated that certain factors like higher neutrophil-lymphocyte ratio and performance status significantly affected OS, suggesting that the effectiveness of these therapies may be limited
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Background: Despite having once been extensively used for cosmetics or pain reduction, the use of single-incision laparoscopic cholecystectomy (SILC) has declined in recent years due to technical difficulties and a reported increase in complications. Since the introduction of SILC in 2009, our hospital has been actively involved with this technique. Our experience suggests that SILC is not a difficult procedure and can be safe and useful, with particularly excellent cosmetic outcomes.

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In cases where carcinomatous meningitis leads to hydrocephalus and increases intracranial pressure, patients present with exacerbated pain and several neurological symptoms. It is reported that multidisciplinary therapy, including radiation therapy, drug therapy, and surgery, is performed for patients with carcinomatous meningitis; however, it is rarely successful. Ventriculoperitoneal shunting(V-P shunt)is a surgical intervention that might relieve the pain temporarily and improve the quality of life.

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With the advancement of endoscopic resection(ER)of colorectal cancer, surgical resection after ER has been increasing. This study evaluated the effects of initial ER on short- and long-term outcomes in T1b colorectal cancer. This retrospective cohort study enrolled patients with pathological T1b colorectal cancer who underwent colorectal surgical resection between 2008 and 2018.

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A 67-year-old man with a history of appendectomy 40 years ago underwent single-incision laparoscopic surgery for total extraperitoneal inguinal hernia repair. Postoperatively, the pararectal incisional scar obtained from the appendectomy was infected; thus, antibiotic therapy and drainage were performed. However, the infection persisted.

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Aim: Osteoporosis in patients after gastrectomy is increasing with the aging of gastric cancer patients. Bisphosphonates are effective treatments for osteoporosis; however, their safety or efficacy in postgastrectomy patients has not been established. The purpose of this multicenter prospective intervention study was to investigate the impact of monthly minodronate on osteoporosis after gastrectomy.

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We investigated whether growth hormone (GH) treatment could accelerate the onset of puberty in patients with isolated GH deficiency (GHD). Of the 135 boys and 89 girls who started GH treatment before the onset of puberty and were followed up at Tanaka Growth Clinic, 83 boys and 51 girls who started GH treatment sufficiently earlier than the average age at onset of puberty of GHD patients (<10 years vs. 11.

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Article Synopsis
  • About twice as many boys as girls receive growth hormone therapy for growth hormone deficiency (GHD), but this may be due to a selection bias rather than actual prevalence.
  • A study involving 3,902 children at 17 short stature clinics found no significant difference in the percentage of boys (45.7%) and girls (49.8%) undergoing GH stimulation tests, nor in the diagnosis rates of GHD (22.0% for boys vs. 20.1% for girls).
  • The observed boy-to-girl ratio in both short stature and GHD diagnoses was similar (1.58:1 and 1.59:1 respectively), suggesting that more boys seek treatment due to parental concerns about boys' height
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Gastrointestinal cancer (GIC) is a common disease and is considered to be the leading cause of cancer-related death worldwide; thus, new diagnostic and therapeutic strategies for GIC are urgently required. Noncoding RNAs (ncRNAs) are functional RNAs that are transcribed from the genome but do not encode proteins. MicroRNAs (miRNAs) are short ncRNAs that are reported to function as both oncogenes and tumor suppressors.

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Background: Long-term outcomes of single-incision laparoscopic colectomy (SILC) for colon cancer (CC), as practiced in real-world settings, especially in relation to disease stage, have not been established. We examined, retrospectively, both short- and long-term outcomes of SILC versus those of multiport laparoscopic colectomy (MPLC) performed for CC in a propensity-score-matched cohort.

Methods: The study involved 263 patient pairs matched 1:1 from among 691 patients who, between January 2008 and May 2014, underwent either SILC or MPLC for a primary solitary CC at our hospital.

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Background/aim: The rate of lymph node metastasis (LNM) of colorectal carcinoma (CRC) with a submucosal (SM) invasion depth of 1000 µm or more can reach 12.5%, which is the most common reason for additional resection in daily practice. Other studies have reported that the rate of LNM is less than 2%, regardless of the depth of invasion, if the lesions show good histology, lymphovascular infiltration is negative, and tumor budding is limited.

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Aim: We previously reported in a randomized controlled trial that Billroth I and Roux-en-Y reconstructions were generally equivalent regarding body weight change and nutritional status 1 year after distal gastrectomy for gastric cancer. We describe the long-term follow-up data 5 years after distal gastrectomy.

Methods: We analyzed consecutive gastric cancer patients who were randomly assigned to undergo Billroth I or Roux-en-Y reconstruction after distal gastrectomy.

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An 83-year-old woman was given a diagnosis of gastric cancer and received distal gastrectomy 9 years ago. Three years later, CT revealed a tumor measuring 13 mm in diameter in hepatic segment 7. She was followed for 5 years, and the size of the tumor did not change.

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