No abstract available.

No abstract available.

No abstract available.

Pancreatic intraepithelial neoplasia (PanIN) is a precancerous lesion. A 72-year old man was admitted to our hospital because of abdominal pain, and he had an elevated serum level of pancreatic amylase. ERCP showed a focal stricture of the main pancreatic duct without upstream dilatation in the body of the pancreas. Cytologic evaluation with an endoscopic brush at the stricture suggested the presence of adenocarcinoma. After subtotal pancreatectomy, the features of PanIN were observed in the branch pancreatic duct. ERCP with brush cytology seems to be a useful method for detecting PanIN at the precancerous stage. We report here on a case of PanIN associated with a stricture of the main pancreatic duct.
Abdominal Pain ; Adenocarcinoma ; Amylases ; Cholangiopancreatography, Endoscopic Retrograde ; Constriction, Pathologic ; Dilatation ; Pancreas ; Pancreatectomy ; Pancreatic Ducts ; Pancreatitis

Capsule endoscopy (CE) is a valuable modality for directly examining the small bowel in a relatively noninvasive and safe manner. CE is being increasingly used for obscure gastrointestinal bleeding, Crohn's disease, drug induced ulcer and small bowel tumor. Although capsule retention is a relatively infrequent complication, small bowel obstruction and strictures have been considered contraindications to CE. But some authors have reported that capsule endoscopy can be safely used to help identify the etiology and site of small bowel obstruction, and the retention of the capsule indicates the presence of a lesion requiring surgery. We report here on a case of small bowel obstruction and capsule retention by a small bowel ulcer, and the small bowel ulcer was not found when performing capsule endoscopy.
Capsule Endoscopy ; Constriction, Pathologic ; Crohn Disease ; Endoscopy ; Hemorrhage ; Retention (Psychology) ; Ulcer

Anticoagulant ileus is a rare complication that is caused by an intramural hematoma, and the hematoma is due to excessive anticoagulant therapy. The features of anticoagulant ileus vary from slight abdominal pain to vomiting, severe abdominal pain and abdominal rebound tenderness that are due to intestinal obstruction. Anticoagulant ileus is sometimes accompanied by gastrointestinal bleeding, peritoneal bleeding and panperitonitis due to intestinal perforation. The diagnosis of anticoagulant ileus has been made using such radiographic methods as enhanced abdominal computed tomography and small bowel follow-through. We were able to confirm a case of anticoagulant ileus with bleeding by performing double balloon enteroscopy. We report on this case and we review the relevant literature.
Abdominal Pain ; Double-Balloon Enteroscopy ; Hematoma ; Hemorrhage ; Ileus ; Intestinal Obstruction ; Intestinal Perforation ; Vomiting

Malignant rhabdoid tumors were first described in 1978 by Beckwith and Palmer as a rare variant of Wilms' tumors with a "rhabdomyosarcomatoid" pattern and a particularly poor prognosis. Week reclassified this disease as a distinct disease in 1989 and thereafter, there have been several reports about malignant rhabdoid tumor that occurred in various organs, including the colon. The histologic characteristics of rhabdoid tumor are noncohesive or loosely cohesive cells with high cellularity, an eccentric large nucleus and eosinophilic cytoplasm, and the cytoplasm is usually positive for vimentin and it contain hyaline inclusions. On immunohistochemical staining, the cells are usually positive for vimentin and cytokeratin and they are negative for desmin. This tumor progresses rapidly and it has a very poor prognosis, but survival is better if there is no lymphatic or distant metastasis. We experienced a patient who suffered with undifferentiated adenocarcinoma with rhabdoid features in the ascending colon.
Adenocarcinoma ; Colon ; Colon, Ascending ; Colonic Neoplasms ; Cytoplasm ; Desmin ; Eosinophils ; Humans ; Hyalin ; Keratins ; Neoplasm Metastasis ; Prognosis ; Rhabdoid Tumor ; Vimentin ; Wilms Tumor

Dieulafoy's lesion is a rare cause of repetitive and massive gastrointestinal bleeding, and this is characterized by an isolated arteriole protruding through a small mucosal defect. Dieulafoy's lesion is generally found in the stomach within 6 cm of the gastroesophageal junction, and usually on the lesser curvature, but many lesions have been reported in extragastric locations, including the esophagus, small bowel and rectum. A Dieulafoy's lesion in the ampulla of Vater is extremely rare, and only one such case has been reported in the Korean population. We experienced a rare case of Dieulafoy's lesion in the ampulla of Vater with massive pulsatile bleeding, and this was successfully treated by transparent cap-assisted endoscopic hemoclipping. We report here on this case with a review of the relevant literature.
Ampulla of Vater ; Arterioles ; Esophagogastric Junction ; Esophagus ; Hemorrhage ; Rectum ; Stomach

Gastrointestinal angiodysplasia is one of the causes of acute and chronic gastrointestinal bleeding, and gastrointestinal angiodysplasia makes up 2~6% of all the cases of upper gastrointestinal bleeding. Bleeding from the ampulla of Vater is very rare. We report here on an unusual case of bleeding from angiodysplasia at the ampulla of Vater in a 58-aged woman with end stage renal failure. This lesion was successfully treated with endoscopic argon plasma coagulation.
Ampulla of Vater ; Angiodysplasia ; Argon Plasma Coagulation ; Female ; Hemorrhage ; Humans ; Kidney Failure, Chronic ; Renal Insufficiency

Duodenal carcinoid tumors are rare, and they represent only 2.0~8.9% of all gastrointestinal carcinoid tumors in the western countries. Duodenal carcinoid tumors have previously been treated by surgical resection. The recently recommended treatment for a carcinoid tumor smaller than 1 cm in diameter is endoscopic resection. We experienced a case of a duodenal carcinoid tumor in a 56 year-old man who presented with upper abdominal pain. On the endoscopic examination, a 6 mm sized polypoid lesion with a central depression was noticed on the duodenal bulb. The biopsy confirmed the diagnosis of carcinoid tumor. The endoscopic ultrasound probe showed a hypoechoic tumor that was confined to the submocosal layer. The tumor was completely resected by an endoscopic mucosal resection technique and using a transparent cap.
Abdominal Pain ; Biopsy ; Carcinoid Tumor ; Depression