Hiroyuki Matsubayashi


Affiliation: Shizuoka Cancer Center
Country: Japan


  1. Matsubayashi H, Yamashita R, Sasaki K, Iwai T, Ishiwatari H, Imai K, et al. Retroperitoneal choriocarcinoma diagnosed by endoscopic ultrasonography-guided fine needle aspiration biopsy. Arab J Gastroenterol. 2018;19:130-133 pubmed publisher
    ..EUS-FNAB enabled a prompt diagnosis and suitable treatment for choriocarcinoma and was considered as an effective diagnostic tool for rare tumours with rapid progression. ..
  2. Matsubayashi H, Maeda A, Fukutomi A, Ono H. A case of choledocholithiasis treated by parallel cannulation along with PTGBD rendezvous. Clin J Gastroenterol. 2009;2:36-38 pubmed publisher
    ..Next, we extended a PTGBD tube into the duodenal lumen and stretched the lower bile duct straight. Then, the bile stone was successfully moved out through ampulla without any complication. ..
  3. Matsubayashi H, Matsunaga K, Uesaka K, Fukutomi A, Sasaki K, Furukawa H, et al. A case of pancreatic carcinoma with suspected autoimmune pancreatitis. Clin J Gastroenterol. 2009;2:59-63 pubmed publisher
    ..It is important to confirm diagnosis with histology in cases of suspicious autoimmune pancreatitis, even when the clinical images are compatible with AIP. ..
  4. Fujie S, Matsubayashi H, Ishiwatari H, Hazama H, Ito T, Sasaki K, et al. Intraductal Tubulopapillary Epithelial Proliferation Associated with Type 1 Autoimmune Pancreatitis. J Gastrointestin Liver Dis. 2018;27:83-87 pubmed publisher
    ..The current case indicates issues in the clinical diagnosis of rare variants of AIP, and raises questions about the relationship between AIP and pancreatic epithelial lesions. ..
  5. Shinjo K, Matsubayashi H, Matsui T, Kawata N, Uemura S, Yamamoto Y, et al. Biliary hemostasis using an endoscopic plastic stent placement for uncontrolled hemobilia caused by transpapillary forceps biopsy (with video). Clin J Gastroenterol. 2016;9:86-8 pubmed publisher
    ..The placement of both an endoscopic biliary plastic stent and a nasobiliary drainage catheter can be an alternative hemostatic tool to CSEMSs. ..
  6. Matsubayashi H, Aikawa Y, Sugiura T, Sasaki K, Hotta K, Ono H. Pancreatic Lymphoepithelial Cyst Showing Multiple Floating Ball-like Appearances. J Gastrointestin Liver Dis. 2016;25:239-42 pubmed publisher
    ..Keratin components of a pancreatic LEC can take a liquid, sludge, or solid form. Clinicians must be aware of the variations in imaging to facilitate the differentiation and management of pancreatic cystic lesions. ..
  7. Matsubayashi H, Kishida Y, Yoshida Y, Yoshida M, Tanaka Y, Igarashi K, et al. Autoimmune pancreatitis with colonic stenosis: an unusual complication and atypical pancreatographic finding. BMC Gastroenterol. 2014;14:173 pubmed publisher
    ..The present case is the first report of AIP developing colonic stenosis by the inflammatory infiltration. In this case, steroid therapy was effective for the diagnosis and treatment of pancreatic mass involving the descending colon. ..
  8. Shibata M, Matsubayashi H, Aramaki T, Uesaka K, Tsutsumi N, Sasaki K, et al. A case of IgG4-related hepatic inflammatory pseudotumor replaced by an abscess after steroid treatment. BMC Gastroenterol. 2016;16:89 pubmed publisher
    ..To differentiate it from a malignant tumor, histological examination is necessary. Although corticosteroids are recognized as the standard therapy, unexpected and critical complications can develop in cases of IgG4-related hepatic IPT. ..
  9. Matsubayashi H, Oka Y, Ito T, Uesaka K, Sasaki K, Ono H. A Case of Serous Cystadenoma Communicating with a Stenotic Santorini's Duct and a Dilated Main Pancreatic Duct. J Gastrointestin Liver Dis. 2016;25:551-554 pubmed publisher
    ..Branch-type intraductal papillary mucinous neoplasm, possibly invading to the MPD, was suspected and pancreatoduodenectomy was performed. Surprisingly, pathology of the resected pancreas showed mixed-type serous cystadenoma. ..

More Information


  1. Matsubayashi H, Ishiwatari H, Matsui T, Imai K, Hotta K, Ono H. Successful replacement of a metallic hepaticogastrostomy stent dislocated during endoscopic retrograde cholangiography. Arab J Gastroenterol. 2018;19:42-44 pubmed publisher
    ..Current case report alarms a risk of HGS stent dislocation when conducting endoscopic retrograde cholangiopancreatography (ERCP)-associated procedures after the placement of an HGS stent. ..
  2. Kishida Y, Matsubayashi H, Sasaki K, Honda S, Uemura S, Uesaka K, et al. A case of multicentric pancreatic mixed acinar-ductal carcinoma diagnosed by a yogurt-like cell clump flowing from the papilla of Vater. BMC Gastroenterol. 2017;17:20 pubmed publisher
    ..These neoplasms histologically resembled mixed acinar-ductal carcinoma. Current report presented a rare tumor with multicentric pancreatic lesions, preoperatively diagnosed by a biopsy of an uncommon substance. ..
  3. Matsubayashi H, Kawata N, Kakushima N, Tanaka M, Takizawa K, Kiyozumi Y, et al. A case of type 1 multiple endocrine neoplasia with esophageal stricture successfully treated with endoscopic balloon dilation and local steroid injection combined with surgical resection of gastrinomas. BMC Gastroenterol. 2017;17:37 pubmed publisher
    ..However, in refractory cases with repetitive and/or severe complications due to high acid secretion, surgical treatment could be considered as an option. ..
  4. Uemura S, Matsubayashi H, Kiyozumi Y, Uesaka K, Yamamoto Y, Sasaki K, et al. Pancreatic adenocarcinoma with a germline PTEN p.Arg234Gln mutation. Fam Cancer. 2018;17:255-259 pubmed publisher
    ..To our knowledge, this is the first report of PDAC associated with a germline PTEN mutation, particularly a rare variant (p.Arg234Gln) with cancer risks. ..