Faculty Profiles - IWAMURO Masaya

Papers - IWAMURO Masaya

Division display 401 - 406 of about 406 ／ All the affair displays >>

Eosinophilic Cholangitis with Initial Clinical Features Indistinguishable from IgG4-Related Cholangitis Reviewed

Masaya Iwamuro, Kazuhide Yamamoto, Hirofumi Kawamoto, Ryo Terada, Tsuneyoshi Ogawa, Soichiro Nose

INTERNAL MEDICINE 48 ( 13 ) 1143 - 1147 2009

Language：English Publishing type：Research paper (scientific journal) Publisher：JAPAN SOC INTERNAL MEDICINE

A 66-year-old woman presented with jaundice, elevated liver enzymes, peripheral eosinophilia and increased levels of immunoglobulin (Ig) G4. The image findings of the biliary tree revealed multifocal strictures mimicking primary sclerosing cholangitis. A biopsy specimen of the liver demonstrated an infiltration of inflammatory cells consisting of several eosinophils and IgG4-positive plasma cells. The liver enzymes and eosinophil count were normalized immediately after the administration of an oral steroid. Finally, the patient was diagnosed with eosinophilic cholangitis based on the clinical manifestations, although she had features of both eosinophilic cholangitis and IgG4-related cholangitis. This case indicates that the two entities may show similar manifestations and thus they should be discriminated carefully.

DOI： 10.2169/internalmedicine.48.1892

Web of Science

researchmap

A case of mixed duct-islet cell tumor of the pancreas

IWAMURO Masaya, KUBOTA Junichi, SAITO Shunsuke, GOUBARU Motohiro, OHTA Takeyuki, OGATA Masatoshi, TAKUMA Yoshitaka, TANAKA Shouichi, MAKINO Yasuhiro, MURAKAMI Ichiro

Nippon Shokakibyo Gakkai Zasshi 104 ( 6 ) 829 - 836 2007.6

Language：Japanese Publisher：The Japanese Society of Gastroenterology

A 30-year-old woman was referred to us because of hypoglycemic attack. The tumor on the pancreatic body of 22 mm size was revealed by close inspection, and was diagnosed as insulinoma. Surgical resection was performed, but curative resection was impossible because the component of adenocarcinoma infiltrating into surrounding tissue coexisted with insulinoma. Postoperatively, we make a diagnosis of combined tumor of the pancreas, i.e. mixed duct-islet cell carcinoma. In this paper, we discuss this rare disorder and summarizie 33 cases reported in the Japanese literature.<br>

DOI： 10.11405/nisshoshi.104.829

CiNii Article

CiNii Books

researchmap

Other Link： http://search.jamas.or.jp/link/ui/2007273459

Gastric ulcer after prophylactic balloon-occluded retrograde transvenous obliteration. Reviewed

Takuma Y, Nouso K, Takayama H, Makino Y, Saito S, Tanaka S, Ogata M, Ohta T, Kubota J, Iwamuro M

Journal of gastroenterology 42 ( 3 ) 257 - 260 2007.3

Polypoid colonic hamartomatous inverted polyp Reviewed

Shouichi Tanaka, Masaya Iwamuro, Junichi Kubota, Motohiro Goubaru, Takeyuki Ohta, Masatoshi Ogata, Ichiro Murakam

DIGESTIVE ENDOSCOPY 19 ( 1 ) 40 - 42 2007.1

Language：English Publishing type：Research paper (scientific journal) Publisher：BLACKWELL PUBLISHING

We herein present a unique polyp diagnosed as polypoid colonic hamartomatous inverted polyp. Colonoscopic examination revealed a clover-like submucosal tumor about 30 mm in size with a long stalk at the mid-transverse colon. The polyp consisted of elongated crypts with cystic dilatation located in the submucosal layer. To the best of our knowledge, there have been no previous reports of the same type of pedunculated colonic polyp, similar in appearance to inflammatory myoglandular polyps but covered with a layer of normal mucosa possessing the muscularis mucosae at the uppermost surface of the polyp.

DOI： 10.1111/j.1443-1661.2007.00674.x

Web of Science

researchmap

Duodenal duplication cyst of the ampulla of Vater Reviewed

Shouichi Tanaka, Motohiro Goubaru, Atsuyuki Ohnishi, Hideaki Takahashi, Hiroki Takayama, Teruya Nagahara, Masaya Iwamuro, Shigeru Horiguchi, Takeyuki Ohta, Ichiro Murakami

INTERNAL MEDICINE 46 ( 24 ) 1979 - 1982 2007

Language：English Publishing type：Research paper (scientific journal) Publisher：JAPAN SOC INTERNAL MEDICINE

A 35-year-old man presented with the complaint of epigastric discomfort. Gastrointestinal endoscopy and endoscopic ultrasonography revealed a cystic lesion 20 mm in size at the ampulla of Vater. Endoscopic retrograde cholangiopancreatography (ERCP) revealed that the cystic lesion communicated with both the common bile duct and pancreatic duct via the common channel. Choledochocele was ruled out by close examination of the ERCP findings. The cystic lesion was surgically resected. Since histological findings revealed that the mucosa inside the lesion was duodenum-like and contained a layer of smooth muscle, the lesion was diagnosed as a congenital duplication cyst of the duodenum.

DOI： 10.2169/internalmedicine.46.0451

Web of Science

researchmap

A case of acute hepatitis E virus infection with clinical features indistinguishable from drug-induced liver injury Reviewed

Masaya Iwamuro, Mitsuhiko Kawaguchi, Ryo Terada, Toshiya Onsawa, Kazuhide Yamamoto, Tatsuya Itoshima, Kazuaki Takahashi

Acta Hepatologica Japonica 46 ( 8 ) 512 - 515 2005

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Hepatology

We experienced a case of acute hepatitis E virus (HEV) infection with clinical features indistinguishable from drug-induced liver injury. A 71-year old female was admitted to the hospital because of an elevation of serum trasnaminase levels. Kampo medicines had been administered four weeks before, and lymphocyte stimulation tests for Kampo medicines were positive. In consequence, we assumed that drug-induced reaction was the cause of her liver injury. Afterward, however, both immunoglobulin M antibodies against HEV and HEV RNA turned out to be positive. Finally, we diagnosed as acute HEV infection. The patient had no history of a travel abroad, ingestion of a wild boar, deer or goat. She had eaten a pig liver one month before, which was presumed as a source of infection.

DOI： 10.2957/kanzo.46.512

Scopus

researchmap

　 PREV - NEXT 　

< IWAMURO Masaya >

Papers - IWAMURO Masaya