Endoscopic Ultrasound-guided Fine-needle Aspiration Biopsy of a Renal Mass

Traditionally, tissue biopsies of kidney lesions are usually performed with CT or percutaneous ultrasound guidance, but biopsies using EUS have rarely been reported. In this report, we describe a case of renal cell carcinoma (RCC) diagnosed using EUS-guided fine-needle aspiration biopsy. A 75-year-old woman taking aspirin due to stable angina continued to exhibit weight loss and anemia and visited the gastroenterology department. No bleeding was observed on upper and lower gastrointestinal endoscopy. A contrast-enhanced mass was observed in the left kidney, accompanied by 8.9×10.8 cm-sized necrosis suggesting RCC on abdominal CT. Chest CT showed masses in both lungs. We planned to administer targeted therapy after pathological confirmation using EUS. Aspirin was continued, and we performed fine-needle biopsy using a 22-gauge needle three times. No adverse events were observed after the procedure. Pathological examination confirmed RCC, clear cell type, and the patient is currently undergoing treatment with sunitinib. EUS-guided fine-needle aspiration biopsy is safe for liver, pancreatic, or other tumors accessible from the upper gastrointestinal tract. This technique shows fewer adverse events. To the best of our knowledge, there have been no other reports on EUS-guided fine-needle aspiration biopsy to identify RCC in Korea.

Gastric Angiolipoma Resected with Endoscopic Submucosal Dissection

Angiolipoma is a benign fatty neoplasm that has components of proliferating blood vessels. These types of lesions commonly occur in the subcutaneous tissue of the limbs and trunk. Angiolipoma in the gastrointestinal tract is extremely rare, and the final diagnosis generally depends on histological examination of the excised biopsy. In most previously reported cases, the lesions were diagnosed and treated with surgical management. In this study, we report a case of gastric angiolipoma of approximately 4 cm in size that was diagnosed and treated with endoscopic submucosal dissection.

Endoscopic Ultrasound-guided Fine-needle Aspiration Biopsy of a Renal Mass

Traditionally, tissue biopsies of kidney lesions are usually performed with CT or percutaneous ultrasound guidance, but biopsies using EUS have rarely been reported. In this report, we describe a case of renal cell carcinoma (RCC) diagnosed using EUS-guided fine-needle aspiration biopsy. A 75-year-old woman taking aspirin due to stable angina continued to exhibit weight loss and anemia and visited the gastroenterology department. No bleeding was observed on upper and lower gastrointestinal endoscopy. A contrast-enhanced mass was observed in the left kidney, accompanied by 8.9×10.8 cm-sized necrosis suggesting RCC on abdominal CT. Chest CT showed masses in both lungs. We planned to administer targeted therapy after pathological confirmation using EUS. Aspirin was continued, and we performed fine-needle biopsy using a 22-gauge needle three times. No adverse events were observed after the procedure. Pathological examination confirmed RCC, clear cell type, and the patient is currently undergoing treatment with sunitinib. EUS-guided fine-needle aspiration biopsy is safe for liver, pancreatic, or other tumors accessible from the upper gastrointestinal tract. This technique shows fewer adverse events. To the best of our knowledge, there have been no other reports on EUS-guided fine-needle aspiration biopsy to identify RCC in Korea.

Gastric Angiolipoma Resected with Endoscopic Submucosal Dissection

Angiolipoma is a benign fatty neoplasm that has components of proliferating blood vessels. These types of lesions commonly occur in the subcutaneous tissue of the limbs and trunk. Angiolipoma in the gastrointestinal tract is extremely rare, and the final diagnosis generally depends on histological examination of the excised biopsy. In most previously reported cases, the lesions were diagnosed and treated with surgical management. In this study, we report a case of gastric angiolipoma of approximately 4 cm in size that was diagnosed and treated with endoscopic submucosal dissection.

Azathioprine-Induced Non-Cirrhotic Portal Hypertension in a Patient with Crohn’s Disease / 대한내과학회지

Thiopurine-based drugs such as azathioprine and 6-MP are among the most common immunosuppressants used to treat inflammatory bowel disease, autoimmune hepatitis, various autoimmune diseases, and patients undergoing organ transplantation. The drugs are associated with various complications, of which one of the most serious is hepatotoxicity that may trigger non-cirrhotic portal hypertension. We report a case with this side-effect in a patient taking azathioprine to treat Crohn’s disease.

Local Recurrence and Its Risk Factor after Incomplete Resection of Colorectal Advanced Adenomas: A Single Center, Retrospective Study / 대한소화기학회지

BACKGROUND/AIMS: Colonoscopy can detect precancerous lesions, which can subsequently be removed and reduce incidences of and mortality from colorectal cancer (CRC). However, recently published data have highlighted a significant rate of CRC in patients who previously underwent colonoscopy. Among many reasons, incomplete resection has been considered as a significant contributor. However, to date, there have only been a few studies regarding incompletely resected polyps, especially advanced colorectal adenoma (ACA). Hence, we aimed to evaluate the prognosis of incompletely resected ACA. METHODS: We retrospectively reviewed the medical records of patients with ACA who had underwent endoscopic treatment with incomplete resection. The primary outcomes were (1) the incomplete resection rate of ACA, as determined by a histopathologic examination and (2) the recurrence rate of incompletely resected ACA. We also investigated the probable contributing factors that may have led to a relapse of incompletely resected ACA. RESULTS: A total of 7,105 patients had their colorectal polyps resected by endoscopic treatment, and 2,233 of these were considered as ACA. Of these, 354 polyps (15.8%) were resected incompletely, and only 163 patients were followed-up. Of those followed-up, 31 patients (19.0%) experienced local recurrence. The risk factors for recurrence after incomplete resection were evaluated; age, morphology of adenoma, and use of rescue therapy, such as argon plasma coagulation, were found to be associated with adenoma recurrence. CONCLUSIONS: Incompletely resected ACA in older patients or in patients with sessile-type adenomas should be monitored strictly, and if incomplete resection is suspected, rescue therapy must be considered.

A wide variation of the quality of colonoscopy reporting system in the real clinical practice in southeastern area of Korea

BACKGROUND/AIMS: Establishment of a colonoscopy reporting system is a prerequisite to determining and improving quality. This study aimed to investigate colonoscopists' opinions and the actual situation of a colonoscopy reporting system in a clinical practice in southeastern area of Korea and to assess the factors predictive of an inadequate reporting system. METHODS: Physicians who performed colonoscopies in the Daegu-Gyeongbuk province of Korea and were registered with the Korean Society of Gastrointestinal Endoscopy (KSGE) were interviewed via mail about colonoscopy reporting systems using a standardized questionnaire. RESULTS: Of 181 endoscopists invited to participate, 125 responded to the questionnaires (response rate, 69%). Most responders were internists (105/125, 84%) and worked in primary clinics (88/125, 70.4%). Seventy-one specialists (56.8%) held board certifications for endoscopy from the KSGE. A median of 20 colonoscopies (interquartile range, 10–47) was performed per month. Although 88.8% of responders agreed that a colonoscopy reporting system is necessary, only 18.4% (23/125) had achieved the optimal reporting system level recommended by the Quality Assurance Task Group of the National Colorectal Cancer Roundtable. One-third of endoscopists replied that they did not use a reporting document for the main reasons of "too busy" and "inconvenience." Non-endoscopy specialists and primary care centers were independent predictive factors for failure to use a colonoscopy reporting system. CONCLUSIONS: The quality of colonoscopy reporting systems varies widely and is considerably suboptimal in actual clinical practice settings in southeastern Korea, indicating considerable room for quality improvements in this field.

A wide variation of the quality of colonoscopy reporting system in the real clinical practice in southeastern area of Korea

BACKGROUND/AIMS: Establishment of a colonoscopy reporting system is a prerequisite to determining and improving quality. This study aimed to investigate colonoscopists' opinions and the actual situation of a colonoscopy reporting system in a clinical practice in southeastern area of Korea and to assess the factors predictive of an inadequate reporting system. METHODS: Physicians who performed colonoscopies in the Daegu-Gyeongbuk province of Korea and were registered with the Korean Society of Gastrointestinal Endoscopy (KSGE) were interviewed via mail about colonoscopy reporting systems using a standardized questionnaire. RESULTS: Of 181 endoscopists invited to participate, 125 responded to the questionnaires (response rate, 69%). Most responders were internists (105/125, 84%) and worked in primary clinics (88/125, 70.4%). Seventy-one specialists (56.8%) held board certifications for endoscopy from the KSGE. A median of 20 colonoscopies (interquartile range, 10–47) was performed per month. Although 88.8% of responders agreed that a colonoscopy reporting system is necessary, only 18.4% (23/125) had achieved the optimal reporting system level recommended by the Quality Assurance Task Group of the National Colorectal Cancer Roundtable. One-third of endoscopists replied that they did not use a reporting document for the main reasons of "too busy" and "inconvenience." Non-endoscopy specialists and primary care centers were independent predictive factors for failure to use a colonoscopy reporting system. CONCLUSIONS: The quality of colonoscopy reporting systems varies widely and is considerably suboptimal in actual clinical practice settings in southeastern Korea, indicating considerable room for quality improvements in this field.

Clinical Outcomes of the Endoscopic Submucosal Dissection of Early Gastric Cancer Are Comparable between Absolute and New Expanded Criteria

BACKGROUND/AIMS: Advances in endoscopic submucosal dissection (ESD) techniques have led to the development of expanded criteria for endoscopic resection of early gastric cancer (EGC). The aim of this study was to evaluate the short- and long-term outcomes for ESD using indication criteria. METHODS: A total of 1,105 patients underwent ESD for EGC at six medical centers. The patients were classified into the following two groups based on the lesion size, presence of ulceration and pathological review: an absolute criteria group (n=517) and an expanded criteria group (n=588). RESULTS: The curative resection rates (91.1% vs 91.3%, p=0.896) were similar in the absolute criteria group and the expanded criteria group. The en bloc resection rates (93.4% and 92.3%, respectively; p=0.488) and complete resection rates (98.3% and 97.4%, respectively; p=0.357) did not differ between the groups. The cumulative disease-free survival rates and the overall survival rates were similar between the groups (p=0.778 and p=0.654, respectively). Independent factors for the curative resection of EGC included tumor location (upper vs middle and lower, 2.632 [1.128-6.144] vs 3.497 [1.560-7.842], respectively) and en bloc resection rate 12.576 [7.442-21.250]. CONCLUSIONS: The expanded criteria for ESD in cases of EGC is comparable with the widely accepted pre-existing criteria.

Clinical Outcomes of the Endoscopic Submucosal Dissection of Early Gastric Cancer Are Comparable between Absolute and New Expanded Criteria

BACKGROUND/AIMS: Advances in endoscopic submucosal dissection (ESD) techniques have led to the development of expanded criteria for endoscopic resection of early gastric cancer (EGC). The aim of this study was to evaluate the short- and long-term outcomes for ESD using indication criteria. METHODS: A total of 1,105 patients underwent ESD for EGC at six medical centers. The patients were classified into the following two groups based on the lesion size, presence of ulceration and pathological review: an absolute criteria group (n=517) and an expanded criteria group (n=588). RESULTS: The curative resection rates (91.1% vs 91.3%, p=0.896) were similar in the absolute criteria group and the expanded criteria group. The en bloc resection rates (93.4% and 92.3%, respectively; p=0.488) and complete resection rates (98.3% and 97.4%, respectively; p=0.357) did not differ between the groups. The cumulative disease-free survival rates and the overall survival rates were similar between the groups (p=0.778 and p=0.654, respectively). Independent factors for the curative resection of EGC included tumor location (upper vs middle and lower, 2.632 [1.128-6.144] vs 3.497 [1.560-7.842], respectively) and en bloc resection rate 12.576 [7.442-21.250]. CONCLUSIONS: The expanded criteria for ESD in cases of EGC is comparable with the widely accepted pre-existing criteria.

A Case of Cholecysto-gastro-colonic Fistula with Upper Gastrointestinal Bleeding / 대한소화기학회지

Biliary enteric fistula is an abnormal pathway often caused by biliary disease. It is difficult to diagnose the disease because patients have nonspecific symptoms. A 67-year-old woman presented with hematemesis and melena. She was diagnosed with Dieulafoy lesion on the gastric antrum and underwent endoscopic hemostasis using hemoclips. Follow-up upper gastrointestinal endoscopy revealed an abnormal opening on a previous treated site that was suggestive of biliary enteric fistula. Abdomen simple X-ray and abdominal dynamic CT scan showed pneumobilia and cholecysto-gastric fistula. The patient had cholecystectomy and wedge resection of the gastric antrum, followed by right extended hemicolectomy because of severe adhesive lesion between the gallbladder and colon. She was diagnosed with cholecysto-gastro-colic fistula postoperatively. We report on this case and give a brief review of the literatures.

Microscopic colitis in a single center study: clinical feature & characteristics / 대한내과학회지

BACKGROUND/AIMS: Collagenous colitis (CC) and lymphocytic colitis (LC) are characterized by chronic diarrhea and normal radiologic and endoscopic findings. These are currently not uncommon entities whose incidence in increasing as more clinicians take biopsies from macroscopically normal colons. The purpose of this study was to examine the clinical features and characteristics in microscopic colitis. METHODS: From January 2003 to December 2006, medical records were reviewed from 80 patients with chronic diarrhea, who had normal colonoscopic findings but underwent biopsy. Patients with microscopic colitis were identified by reviewing the pathology databases and by reviewing biopsies. RESULTS: Microscopic colitis was diagnosed in 12 patients (15%). Six patients with CC (Male:Female=2:4, mean age 54+/-20.1 years) and 6 patients with LC (Male:Female=5:1, mean age 51.2+/-21.4 years) were identified. Autoimmune disease was diagnosed in 4 patients (33%). Drug-induced disease was suspected in 3 patients (25%). The inciting drugs were NSAIDs, ticlopidine, ranitidine, and acarbose. Complete or partial resolution of diarrhea was achieved in all patients, including spontaneous resolution in 2 patients. Antidiarrheal drugs, mesalazine, and cholestylamine were highly effective in both diseases. Recurrence of symptoms occurred in 2 patients (17%). They are taking medicine at present. CONCLUSIONS: Microscopic colitis is a relatively common cause of chronic diarrhea that appears to be increasing in incidence. We reported clinical features, characteristics, treatment, and response of microscopic colitis in our experience.

A Case of an Intraluminal Duodenal Diverticulum Managed with Endoscopic Incision and Ligation using Needle-knife and Detachable Snare / 대한소화기학회지

An intraluminal duodenal diverticulum (IDD) is a rare congenital anomaly consisted of a sac-like mucosal projection within the second portion of the duodenum. Even though most of cases are asymptomatic, patients may develop recurrent abdominal pain, pancreatitis, and gastrointestinal bleeding. We report a case of symptomatic IDD which presented as acute pancreatitis and obscure gastrointestinal bleeding. Diagnosis was made by typical findings of upper GI series and coronal reformatted CT images. Although surgical resection is the treatment of choice, endoscopic incision and ligation with detachable snare was performed which led to a good result.

Prevalence and risk factors of gallstones in a general health screened population / 대한내과학회지

BACKGROUND: Gallstone is the most common disease of the biliary system. Most cases of gallstone are asymptomatic and we incidentally found gallstones during a community health survey. Our study was designed to determine the prevalence and risk factors for gallstone in a population who underwent health screening. METHODS: We enrolled a total of 36,314 persons who visited the health promotion center in Kyungpook National University Hospital in Korea from 1998 to 2004. They had their gallbladder or biliary system examined with using ultrasonography. The body mass index and biochemical parameters from liver function tests, the lipid profiles and the fasting blood sugar were all measured. All the subjects were divided into several groups and the particular prevalence for gallstone disease for each group was calculated. Chi-square tests and logistic regression analysis assessed the risk factors for gallstone disease. RESULTS: Among 36,314 persons, (19,345 males (53.3%) and 16,969 females (46.7%)), gallstone was found in 735 persons (2.0%). On univariate analysis, the risk factors for gallstone disease were age, body mass index, fasting blood sugar, total cholesterol, LDL-cholesterol, triglyceride and serum aspartate aminotransferase. On multivariate logistic regression analysis, the the risk factors were high body mass index, older age and high fasting blood sugar. CONCLUSIONS: The risk factors seem to show a common pathogenesis for gallstone disease. Although the relation between gallstone disease and metabolic syndrome has not been established, it appears to be associated with metabolic syndrome, but further study on a general population is required.

A case of an aortoesophageal fistula presenting as a Dieulafoy-like lesion / 대한내과학회지

A 68-year-old woman visited our emergency center because of hematemesis. An emergency endoscopy showed an exposed vessel with blood flowing into the upper esophagus. Angiography revealed the presence of extravasation of contrast at the level of the aortic arch and a tortuous fistula between the aortic arch and esophagus. Chest computerized tomography demonstrated the presence of an aortoesophageal fistula and air bubbles inside the fistula. The patient had emergency surgery and the intraoperative findings revealed an aortoesophageal fistula and necrotic materials with a foul odor at the upper esophagus. Primary closure and wrapping of the aorta were performed, but primary closure of the esophagus was impossible because of necrosis. An aortoesophageal fistula is a rare but life-threatening disease. As shown for this patient, an exposed vessel without ulceration at the upper esophagus should raise suspicion of an aortoesophageal fistula and a CT scan or angiography should be performed before endoscopic intervention.

Comparison of the clinical outcomes between intestinal Behcet's disease and simple ulcer / 대한내과학회지

BACKGROUND: This study was performed to compare the clinical outcomes of intestinal Behcet's disease with a simple ulcer. METHODS: We analyzed the medical records of 52 patients that were suspected as having intestinal Behcet's disease. Of these patients, 27 patients (Group 1) met both the criteria of the International Study Group for Behcet's Disease and the Behcet's Disease Research Committee of Japan. Thirteen patients (Group 2) met only the latter criteria and the other patients (Group 3) did not meet any criteria. The efficacy of medical treatment was assessed by the presence of gastrointestinal symptoms and follow-up colonoscopic findings. RESULTS: The mean age for patients with a diagnosis of an intestinal lesion was 38.6+/-12.2 years. The sex ratio was 1.08:1 (M:F) and the mean follow-up duration was 35.2+/-39.5 months. A single, smaller than 5 mm, round and shallow ulcer with an erythematous margin that was located at the leocecal area showed most typical colonoscopic features for intestinal Behcet's disease. No significant differences were found in the clinical manifestations and colonoscopic findings among the three groups of patients. Nineteen (44%) patients achieved complere remission from a sumptomatic point of view and 10 (39%) patients were proved to be complete remission according to follow up colonoscopy after medical treatment. Eleven patients (21.2%) underwent surgery. The overall cumulative rates of a first surgery and re-surgery were 40.5% and 71.9% at 10 years. No statistical relationship was found in the response of medical treatment and the cumulative rate of surgery among the groups. CONCLUSIONS: The clinical course and outcomes of an intestinal simple ulcer are not different from that for intestinal Behcet's disease.

A Case of Cholestatic Hepatitis Induced by Epstein-Barr Virus Infection / 대한간학회지

Acute viral hepatitis in human can be caused by a large number of viruses with a wide range of clinical manifestations and laboratory findings. EBV is a rare causative agent of an acute hepatitis, during the course of infectious mononucleosis. Hepatic manifestations of EBV are usually mild and resolve without serious complications. EBV is rather uncommonly confirmed as an etiologic agent in acute viral hepatitis of adults and it rarely causes cholestatic hepatitis. We report a case of EBV hepatitis with cholestatic feature that was verified through serum viral marker and liver biopsy.

The Factors Related to the Prognosis of Solitary Hepatocellular Carcinoma after Radiofrequency Ablation / 대한간학회지

BACKGROUND/AIMS: Several risk factors, such as size and location, are related to local recurrence after radiofrequency ablation (RFA) in the treatment of hepatocellular carcinoma (HCC). The objectives of this study were to clarify factors related to prognosis. METHODS: From October 1999 to December 2002, we performed RFA for 107 consecutive patients with solitary HCC. We evaluated spiral computed tomography and serum alpha-fetoprotein level every 3 months after RFA. Seven possible factors for prognosis were analyzed using the Cox proportional hazards regression model: tumor size, tumor location, age, sex, etiology, platelet count, and Child-Pugh classification. Overall survival and disease free survival rate were estimated using the Kaplan- Meier method, and differences between two groups were compared using the log rank test. RESULTS: The Kaplan-Meier estimates of overall survival after radiofrequency ablation were 90.5% at 12 months, 67.4% at 24 months and 46.4% at 36 months and disease free survival were 71.4%, 46.7% and 20.9%, respectively. Using the Cox proportional hazards regression model, it was shown that with regard to overall survival and disease free survival, Child-Pugh classification (P=0.001, P=0.026) and platelet count (P<0.001, P=0.002) were statistically significant factors. The other factors did not have a statistically significant relationship to overall survival and disease free survival. CONCLUSIONS: The size and location known as local recurrence factors were not statistically significant with regard to survival and disease free survival. The Child-Pugh classification and platelet count, that reflect the liver function at the time of RFA, were significant factors for prognosis.