Publications by authors named "Masanori Kon"

Foul smell and large amounts ofexudate, bleeding are the most common and serious symptoms with locally advanced breast cancer(LABC). Mohs' paste is made ofa mixture ofzinc chloride and used for treatment ofmalignant skin tumors. Recently some reports show that Mohs' paste is useful for treatment of malignant tumor including unresectable breast cancer and skin metastasis ofcancer.

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  • A study evaluated the effects of a 20-day very low-calorie diet on obese patients preparing for laparoscopic gastrectomy due to gastric cancer, highlighting the technical challenges of surgery linked to increased visceral fat.
  • Thirty-three patients participated, with an average weight loss of 4.5%, significant reductions in body fat mass, and a notable 16.8% decrease in visceral fat mass, while muscle mass remained stable.
  • The diet program was successful, with all surgeries performed as planned and only one case of severe postoperative complications reported, indicating the potential effectiveness of this preoperative strategy for obese patients.
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Aim: To provide a simple surrogate marker predictive of liver cirrhosis (LC).

Methods: Specimens from 302 patients who underwent resection for hepatocellular carcinoma between January 2006 and December 2012 were retrospectively analyzed. Based on pathologic findings, patients were divided into groups based on whether or not they had LC.

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We introduced stereotactic mammotome biopsy(ST-MMT)for the purpose of screening and other institutions. There are many benign cases to be diagnosed by pathological findings, so it is thought to be necessary to examine the adaptation of STMMT again. We examined the performance of ST-MMT in a case of a non-palpating calcification lesion.

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Background: Strut adjusted volume implant(SAVI)was approved by the Food and Drug Administration(FDA)for the treatment of breast cancer in 2006.

Material And Methods: The phase II study was conducted to investigate the activity and safety of SAVI in breast cancer patients. Criteria for SAVI treatments were N0, T<2 cm, and age≥40.

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The patient was a 71-year-old woman with ER(+), PgR(-), HER2(3+), and Ki-674 2% breast cancer. After surgery for left breast cancer(Bt+Ax), epirubicin, cyclophosphamide therapy was administered as postoperative adjuvant chemotherapy, and nabPTX plus trastuzumab therapy was started sequentially. The patient was hospitalized due to severe neutrope- nia(neutrophils 0/mm3)from nabPTX, but her condition stabilized after admission.

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  • A randomized phase II study evaluated a Wilms' tumor gene 1 (WT1) vaccine combined with gemcitabine (GEM) against GEM alone for advanced pancreatic ductal adenocarcinoma (PDAC).
  • Patients who received the WT1 vaccine showed prolonged progression-free survival (PFS) and a higher overall survival rate at 1 year compared to those on GEM alone, especially in metastatic cases.
  • The treatment was well tolerated and resulted in significant immune responses, indicating that the combination could be beneficial for managing advanced PDAC.
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  • Multimodality therapies are currently used to manage hepatocellular carcinoma (HCC), which remains incurable at advanced stages, and oncolytic virus therapy is emerging as a promising treatment.
  • The study focused on a third-generation oncolytic herpes simplex virus type 1 (HSV-1) called T-01, which selectively kills tumor cells while sparing normal tissue, and analyzed its effects on HCC in both cell lines and mouse models.
  • T-01 demonstrated significant cytotoxic effects on 13 out of 14 tested hepatoma cell lines and inhibited tumor growth in various mouse models, enhancing antitumor responses through T cell activation, suggesting it could be a novel treatment option for HCC patients.
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Objectives: We retrospectively investigated the operative outcomes of patients who underwent distal pancreatectomy (DP) for invasive pancreatic ductal adenocarcinoma (PDAC) located at the body and tail.

Methods: Data from 395 patients with PDAC who underwent DP with margin-negative resection (R0 or R1) were collected from seven high-volume centers in Japan from 2001 to 2012. Among them, 72 patients underwent DP with en-bloc celiac axis resection (DP-CAR).

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Natural antisense transcripts (asRNAs) that do not encode proteins are transcribed from rat, mouse, and human genes, encoding inducible nitric oxide synthase (iNOS), which catalyzes the production of the inflammatory mediator nitric oxide (NO). In septic shock, NO is excessively produced in hepatocytes and macrophages. The iNOS asRNA interacts with and stabilizes iNOS mRNA.

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Purpose: The safety and efficacy of reinforced staplers during distal pancreatectomy (DP) remain controversial because of the small sample size. This multicenter single-arm prospective study aims to evaluate the safety and efficacy of reinforced staplers with bioabsorbable material during DP.

Methods: Between October 2014 and August 2015, 121 patients scheduled for DP were enrolled in this study at 11 institutions in Japan.

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A 55-year-woman presented with abdominal fullness. An abdominal MRI disclosed ovarian and uterine tumors. Under the pathological diagnosis of Kruckenberg tumor, total hysterectomy and bilateral adenexectomy were performed.

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A 45-year-old man was admitted because of necrolytic migratory erythema. A computed tomographic scan of the abdomen revealed a 4.5cm mass in the tail of the pancreas.

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The patient was a 76-year-old woman who had noticed slight difficulty in swallowing in the 3 years prior to this presentation. Her dysphagia progressed while she was hospitalized following cervical cancer surgery. Esophagogastroduodenoscopy and an esophagram showed circumferential erosion and a stricture of the thoracic esophagus.

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Objective: The impact of age on survival after hepatic resection for hepatocellular carcinoma (HCC) has not been thoroughly examined. We reviewed the data of a nationwide follow-up survey to determine the outcomes of hepatectomy for HCC in elderly patients.

Background: Management of malignant diseases in elderly patients has become a global clinical issue because of the increased life expectancy worldwide.

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Introduction: Nonspecific small bowel ulcers are rare and there have been limited reports. We applied laparoscopic surgery successfully for the perforation caused by this disease of jejunum.

Presentation Of Case: A 70-year-old man visited to our hospital with complaint of abdominal pain and fever.

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Background: Primary hepatic neuroendocrine carcinomas are extremely rare. Because of the rarity of PHNEC, its clinical features and treatment outcomes are not well understood. A proper diagnosis and the correct therapeutic approach therefore remain clinically challenging.

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Background: The aim of the present study was to compare the prognostic impact of anatomic resection (AR) versus non-anatomic resection (NAR) on patient survival after resection of a single hepatocellular carcinoma (HCC).

Methods: To control for confounding variable distributions, a 1-to-1 propensity score match was applied to compare the outcomes of AR and NAR. Among 710 patients with a primary, solitary HCC of <5.

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The murine intestine, like that of other mammalians, continues to develop after birth until weaning; however, whether this occurs in response to an intrinsic developmental program or food intake remains unclear. Here, we report a novel system for the allotransplantation of small intestine and colon harvested from Lgr5 ; Rosa26 mice immediately after birth into the subrenal capsule of wild-type mice. By histological and immunohistochemical analysis, the developmental process of transplanted small intestine and colon was shown to be comparable with that of the native tissues: mature intestines equipped with all cell types were formed, indicating that these organs do not require food intake for development.

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Background: Anticancer agents and operating procedures have been developed for hepatocellular carcinoma (HCC) patients, but their prognosis remains poor. It is necessary to develop novel diagnostic and therapeutic strategies for HCC to improve its prognosis. Lactosome is a core-shell-type polymeric micelle, and enclosing labeling or anticancer agents into this micelle enables drug delivery.

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Background: The aim of the present study was to assess recent trends in pancreaticoduodenectomy (PD) and the role of institutional standardization on the development of postoperative complications in 3,378 patients who underwent PD in Japan.

Methods: Data were collected from 3,378 patients who underwent PD in 2006, 2010 and 2014 at 53 institutions. A standardized institution (SI) was defined as one that implements ≥7 of 13 quality initiatives according to departmental policy.

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Introduction: Intestinal malrotation is a congenital anomaly, and its occurrence in adults is rare. Colon cancer with intestinal malrotation is far more rare. We herein report two cases of colon cancer with intestinal malrotation treated with laparoscopic surgery and reviewed the literatures in Japan.

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Amino acids can exert protective effects on the liver either when administered as a medication or following an operation. In this study, we examined the protective effects of amino acids on the liver using in vitro and in vivo models by studying their influence on the induction of inducible nitric oxide synthase (iNOS) and nitric oxide production as a liver injury marker in cultured hepatocytes and liver-protective effects in d-galactosamine and lipopolysaccharide (GalN/LPS)-treated rats, respectively. Primary cultured rat hepatocytes were treated with interleukin (IL)-1β in the presence or absence of Elental® amino acid component (EleAA; 17 amino acids).

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Purpose: The influence of allogenic blood transfusion on the postoperative outcomes of hepatocellular carcinoma (HCC) surgery remains controversial. This study aims to clarify the clinical impacts of perioperative allogenic blood transfusion on liver resection outcome in HCC patients.

Methods: We analyzed data collected over 5 years for 642 patients who underwent hepatectomy for HCC at one of the five university hospitals.

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Article Synopsis
  • Post-operative pancreatic fistula (POPF) is a frequent complication after pancreaticoduodenectomy (PD) and can lead to high mortality rates.
  • A study involving 108 patients with a narrow main pancreatic duct examined the effects of a long-internal stent on preventing POPF, comparing 54 patients with stents to 54 without.
  • Results showed there was no significant reduction in POPF rates between the two groups, and factors like blood loss and soft pancreatic tissue were identified as key risks for developing POPF.
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