Hironori Ryota

Pancreaticogastrostomy following distal pancreatectomy prevents pancreatic fistula‐related complications

The most common postoperative complication after distal pancreatectomy (DP) is still postoperative pancreatic fistula (POPF), which is closely associated with other major complications and remains an unsolved problem.

Less morbidity after introduction of a new departmental policy for patients who undergo open distal pancreatectomy

The aim of this study was to retrospectively compare morbidity and mortality before and after introduction of a new departmental policy for patients who undergo distal pancreatectomy.

Do pancrelipase delayed-release capsules have a protective role against nonalcoholic fatty liver disease after pancreatoduodenectomy in patients with pancreatic cancer? A randomized controlled trial.

The aim of this randomized controlled trial (RCT) was to investigate whether pancrelipase protects against nonalcoholic fatty liver disease (NAFLD) development after pancreatoduodenectomy in patients with pancreatic cancer better than conventional pancreatic enzyme supplementation.

Alleviating Effect of Active Hexose Correlated Compound (AHCC) on Chemotherapy-Related Adverse Events in Patients with Unresectable Pancreatic Ductal Adenocarcinoma.

ABSTRACT The present study was conducted to determine whether active hexose correlated compound (AHCC), a functional food extracted from cultured basidiomycetes, possesses the potential to attenuate adverse events in unresectable pancreas ductal adenocarcinoma (PDAC) patients receiving chemotherapy. Unresectable PDAC patients receiving gemcitabine treatment (GEM) as the first-line chemotherapy were prospectively divided into 2 groups according to AHCC intake (AHCC group, n = 35) or not (control group, n = 40). The patients in the AHCC group ingested 6.0 g of AHCC for 2 mo. Hematological and nonhematological toxicity was compared between the AHCC and control groups. The C-reactive protein (CRP) elevation and albumin decline of the AHCC group were significantly suppressed as compared to the control group during the GEM administration (P = 0.0012, P = 0.0007). Patients in the AHCC group had less frequency of taste disorder caused by GEM (17% vs. 56%, P = 0.0007). Frequency of grade 3 in the modified Glasgow Prognostic Score (mGPS) during chemotherapy was found significantly less in the AHCC group (14%) than the control group (53%, P = 0.0005). AHCC intake can be effective in reducing the adverse events associated with chemotherapy and may contribute to maintaining the QOL of patients with PDAC during GEM administration.

Low-grade mucinous neoplasia in a cecal diverticulum: A case report

Highlights • There are no previous reports of mucocele disease in a colonic diverticulum worldwide.• Laparoscopic ileocecal resection was chosen because of its minimal invasiveness and the patient had no evidence of recurrence 12 months postoperatively.• The possibility of a mucocele in a colonic diverticulum should be considered in patients with a colonic SMT.

Cytological features of hepatoid adenocarcinoma of the gallbladder: A case report with immunocytochemical analyzes

Hepatoid adenocarcinoma is defined as an extrahepatic malignant neoplasm showing morphological and immunohistochemical resemblance of hepatocellular carcinoma. The occurrence of this type of tumor in the gallbladder is extremely rare. In this study, we report the first cytological case of hepatoid adenocarcinoma of the gallbladder. An 80‐year‐old Japanese female was found to have a tumorous lesion in the gallbladder. Papanicolaou smear of the ascites demonstrated a few epithelial cell clusters composed of round to oval neoplastic cells with distinct cell border and large centrally‐located nuclei. Tumor touch smear of the resected tumor revealed the presence of two distinct neoplastic components. The first component was composed of clusters or sheets of epithelial cells with distinct cell border, relatively rich clear cytoplasm, and centrally‐located nuclei, as seen in the ascites specimen. The other component was composed of tall columnar cells with large basally‐oriented nuclei, and glandular formation was noted as well. Immunocytochemical analyzes of the touch smear material demonstrated that the former component was positive for HepPar1, thus it was considered as a hepatoid adenocarcinoma, and the latter component deemed as a typical adenocarcinoma. Histopathological and immunohistochemical examination of the resected gallbladder tumor confirmed a diagnosis of hepatoid adenocarcinoma. The characteristic cytological features of hepatoid adenocarcinoma are the presence of sheets or clusters of neoplastic cells with distinct cell border and centrally‐located nuclei. Immunocytochemical analysis for HepPar1 may help its diagnosis. Demonstration of hepatoid adenocarcinoma is important in the cytological specimen because this type of tumor shows an aggressive clinical course.

Clinical impact of developing better practices at the institutional level on surgical outcomes after distal pancreatectomy in 1515 patients: Domestic audit of the Japanese Society of Pancreatic Surgery

Institutional standardization in the perioperative management of distal pancreatectomy (DP) has not been evaluated in a multicenter setting. The aim of the present study was to assess the influence of institutional standardization on the development of postoperative complications after DP.