Usefulness of the Forrest Classification to Predict Artificial Ulcer Rebleeding during Second-Look Endoscopy after Endoscopic Submucosal Dissection

BACKGROUND/AIMS: Delayed post-endoscopic submucosal dissection (ESD) bleeding (DPEB) is difficult to predict and there is controversy regarding the usefulness of prophylactic hemostasis during second-look endoscopy. This study evaluated the risk factors related to DPEB, the relationship between clinical outcomes and the Forrest classification, and the results of prophylactic hemostasis during second-look endoscopy. METHODS: Second-look endoscopy was performed on the day after ESD to check for recent hemorrhage or potential bleeding and the presence of artificial ulcers in all patients. RESULTS: DPEB occurred in 42 of 581 patients (7.2%). Multivariate analysis determined that a specimen size ≥40 mm (odds ratio [OR], 3.03; p=0.003), and a high-risk Forrest classification (Forrest Ib+IIa+IIb; OR, 6.88; p<0.001) were risk factors for DPEB. DPEB was significantly more likely in patients classified with Forrest Ib (OR, 24.35; p<0.001), IIa (OR, 12.91; p<0.001), or IIb (OR, 8.31; p<0.001) ulcers compared with Forrest III ulcers. There was no statistically significant difference between the prophylactic hemostasis and non-hemostasis groups (Forrest Ib, p=0.938; IIa, p=0.438; IIb, p=0.397; IIc, p=0.773) during second-look endoscopy. CONCLUSIONS: The Forrest classification of artificial gastric ulcers during second-look endoscopy seems to be a useful tool for predicting delayed bleeding. However, routine prophylactic hemostasis during second-look endoscopy seemed to not be useful for preventing DPEB.

Diagnostic Accuracy of Brush Cytology with Direct Smear and Cell-block Techniques according to Preparation Order and Tumor Characteristics in Biliary Strictures / 대한소화기학회지

BACKGROUND/AIMS: There are few data supporting the diagnostic yield of brush cytology depending on the order of cytologic preparation method or the location or shape of tumors in biliary strictures. We investigated diagnostic yields and variations in brush cytology with direct smear and cell-block preparations according to sampling preparation sequence and tumor location and shape in biliary strictures. METHODS: Patients who had undergone ERCP with tissue sampling between August 2009 and April 2013 were analyzed retrospectively. Group A was examined using brush cytology with direct smear followed by cell-block with or without biopsy, while the reverse order was performed for group B. RESULTS: Among 138 enrolled patients, 92 patients (A: 36, B: 56) underwent both brush cytology with direct smear and cell-block preparations. No differences in sensitivity, specificity, or accuracy were observed according to the sampling preparation method and the location or shape of tumors in biliary strictures. The cellularity observed from brush cytology with direct smear was better than that from cell-block according to the location of the tumor (p<0.01). The diagnostic yield was increased in both groups with addition of an endobiliary biopsy. CONCLUSIONS: No difference in diagnostic accuracy was observed between the sequences of preparation for brush cytology with direct smear and cell-block techniques. Brush cytology showed better cellularity for diagnosis.

A Rare Case of Ogilvie Syndrome Associated with Herpes Zoster

Acute colonic pseudo-obstruction (Ogilvie syndrome) associated with herpes zoster is extremely rare, and few cases have been reported. An 81-year-old woman diagnosed with herpes zoster was referred for accompanying colonic ileus. The diameter of the cecum was 7 cm and a computed tomographic scan showed no definite obstructive cause. Because the patient showed minimal improvement with conservative treatment, endoscopic colonic decompression was performed successfully. Previous studies revealed that the treatment of Ogilvie syndrome associated with herpes zoster does not differ from that of other conditions, and the role of the varicella-zoster virus in this syndrome is unclear. Here, we present the first case of Ogilvie syndrome associated with herpes zoster in Korea, which was improved by endoscopic colonic decompression.

Insulin Autoimmune Syndrome with Diabetic Ketoacidosis / 임상당뇨병

Insulin autoimmune syndrome is characterized by spontaneous hypoglycemia, elevated insulin level and a high level of insulin autoantibodies without previous insulin exposure. Among the clinical manifestations of insulin autoimmune syndrome, diabetic ketoacidosis is extremely rare. A 72-year-old diabetic woman was hospitalized with diabetic ketoacidosis. She suffered repeated fasting hypoglycemia after treatment of the diabetic ketoacidosis. Here we describe this case of insulin autoimmune syndrome manifested as diabetic ketoacidosis followed by recurrent hypoglycemia with a review of the relevant literature.

A Case of Transient Small Intestinal Intussusceptions in an Adult / 대한소화기내시경학회지

Intussusception occurs when a segment of the bowel invaginates into the lumen of an adjacent distal segment. Intussusception in adults is a rare disease, accounting for only 5% of all cases. Asymptomatic small bowel intussusception in adults without a lead point is usually transient. When the length of the intussusception is less than 3.5 cm, it can be managed conservatively. This case was an asymptomatic small bowel intussusception without a lead point, which was discovered incidentally during an abdominal computed tomography scan. Spontaneous reduction in the intussusception was observed without any complications while maintaining conservative treatment only.