A Case of Retrograde Jejunogastric Intussusception Following Subtotal Gastrectomy / 대한소화기내시경학회지

Retrograde jejunogastric intussusception is a rare complication following Billroth ll gastric surgery. It is a segmental invagination of a jejunal loop into the stomach through stoma. Clinical manifestations are epigastric pain, vomiting with bile or blood, and a palpable mass in the epigastrium. Gastroscopy and a upper GI (UGI) series are very helpful in the diagnosis of this disease. Although the management of this disease is usually surgical, when endoscopic reduction has failed, surgery should be immediately done because of the high mortality. We present here a case of jejunogastric intussusception that was diagnosed by gastroscopy in a patient with a history of Billroth ll surgery that had been done 6 years prior due to gastric cancer.

A Case of Duodenal Wall Abscess Caused by a Foreign Body / 대한소화기내시경학회지

Duodenal abscess is a form of phlegmonous enterocolitis and is a rarely reported disease throughout the entire world. Duodenal abscess mostly develops from complications of duodenal ulcer perforation, and may result in a clinically fatal course because it is difficult to differentiate from some diseases such as gastric ulcer, gastric cancer, hepatobiliary disorders etc.. The therapeutic gold standard is surgical intervention including abscess removal and drainage. We experienced a case of duodenal abscess that expressed non-specific symptoms, weight loss and epigastric pain, and diagnosed by gastrointestinal endoscopy, abdominal computed tomography. We successfully treated it through surgical intervention with intravenous antibiotics.

A case of improved Menetrier's disease after the eradication of Helicobacter pylori and treatment with a proton pump inhibitor / 대한내과학회지

Menetrier's disease is a protein-losing hypertrophic gastropathy characterized by diffuse tremendous thickening of the gastric wall caused by excessive proliferation of the mucosa. Although the cause of Menetrier's disease is unknown, an association with Helicobacter pylori has been reported. A 42-year-old man was hospitalized for the evaluation of progressive body weight loss and indigestion for 6 months, with recently aggravated epigastric discomfort. Gastroscopy revealed prominent mucosal folds in the body and fundus. The histological findings revealed gastritis with erosions and foveolar hyperplasia. After eradicating the Helicobacter pylori and treatment with a proton pump inhibitor, clinical and endoscopic resolution ensued.

Influence of Tightening Torque on Implant-Abutment Screw Joint Stability / 대한치과보철학회지

STATEMENT OF PROBLEM: Within the elastic limit of the screw, the greater the preload, the tighter and more secure the screw joint. However, additional tensile forces can incur plastic deformation of the abutment screw when functional loads are superimposed on preload stresses, and they can elicit the loosening or fracture of the abutment screw. Therefore, it is necessary to find the optimum preload that will maximize fatigue life and simultaneously offer a reasonable degree of protection against loosening. Another critical factor in addition to the applied torque which can affect the amount of preload is the joint connection type between implant and abutment. PURPOSE: The purpose of this study was to evaluate the influence of tightening torque on the implant-abutment screw joint stability. MATERIAL AND METHODS: Respectively, three different amount of tightening torque (20, 30, and 40 Ncm) were applied to implant systems with three different joint connections, one external butt joint and two internal cones. The initial removal torque value and the postload (cyclic loading up to 100,000 cycles) removal torque value of the abutment screw were measured with digital torque gauge. Then rate of the initial and the postload removal torque loss were calculated for the comparison of the effect of tightening torques and joint connection types between implant and abutment on the joint stability. Results and CONCLUSION: 1. Increase in tightening torque value resulted in significant increase in initial and postload removal torque value in all implant systems (P .05), however GS II and US II systems exhibited significantly lower loss rates with 40 Ncm torque value than with 20 Ncm (P .05).

Influence of tungsten carbide/carbon coating of implant-abutment screw on screw loosening / 대한치과보철학회지

STATEMENT OF PROBLEM: Dental implant procedure has been recognized as a very effective treatment to rehabilitate fully or partially edentulous patients. However, mechanical failures such as screw loosening, screw fracture have been still reported frequently. PURPOSE: The purpose of this study was to evaluate the influence of tungsten carbide/carbon coating, which has superior hardness and frictional wear resistance, on implant-abutment screw loosening of three different joint connections after one million cyclic loading. MATERIAL AND METHODS: The values of detorque before and after loading were measured in three different joint connections (Osstem Implant, Korea), one external butt joint, US II implant system and two internal cones, SS II and GS II system. The values of detorque before loading was analyzed by one-way ANOVA, and two-way ANOVA and Scheffe'test were performed for the value of detorque after loading. RESULTS: 1. The values of initial detorque of tungsten carbide/carbon coated Ti alloy screw were smaller those of Ti alloy screw (P.05). 2. In comparison of loss rate of detorque value after cyclic loading, US II system was greater than SS II and GS II system but there was no difference between SS II and GS II system (P.05). CONCLUSION: Tungsten carbide/carbon coating to increase preload with reduction of friction resistance was a effective way to decrease screw loosening by functional loading.

A Case of a Gastric Gastrointestinal Stromal Tumor with a Fistula and Gastrointestinal Bleeding / 대한소화기내시경학회지

There has been much debate on the origin, differentiation and prognosis of gastrointestinal stromal tumors (GIST). Based on recent studies, we consider Cajal interstitial cell as the origin of a GIST. The common symptoms of a GIST are abdominal pain, hemorrhage, and the presence of a mass. However, there are few reported cases of a GIST with abscess pockets that communicate with the lumen of the stomach via a fistula. We report a case of a GIST of the stomach presenting with an abscess and a fistula communicating with the lumen of the stomach. An 84-year-old man presented with continuous fever and general weakness. We were able to diagnose the disease by an endoscopic examination, CT scan, biopsy and by cellular immunohistochemical staining.

A case of clopidogrel induced neutropenia / 대한내과학회지

Clopidogrel is an oral agent that blocks ADP receptor-mediated platelet aggregation. Clopidogrel along with aspirin was shown by the CURE trial to result in a 20% relative reduction of cardiovascular death, myocardial infarction or stroke. Ticlopidine has been shown to reduce the incidence of stent thrombosis compared with warfarin, but it may cause serious hematological side effects. However, the reported neutropenia has been similar to clopidogrel and aspirin treatment groups (0.01 vs 0.17%, respectively) with corresponding rates (0.05 vs 0.04%, respectively) of severe neutropenia. We treated a 72-year-old female patient with severe neutropenia who underwent percutaneous coronary intervention with drug-eluting stent placement and had no neutrophils in the peripheral blood at 11 days after clopidogrel use. Therefore, clinicians should be alerted to the possibility of severe neutropenia with clopidogrel treatment.

A Case of Huge Anal Fibroepithelial Polyp with HemorrhoidsMisdiagnosed as Anal Cancer / 대한소화기내시경학회지

The anal fibroepithelial polyps are well-known polypoid conditions histologically consisting of connective tissue response resulting from local irritation, which is closely associated with hemorrhoids. As previously reported, the size of the polyps ranged from 3 to 19 mm, average 9 mm. A 60-year-old women was admitted complaining of anal bleeding and constipation. Colonoscopy revealed a 3.0 2.5 cm sized, subpedunculated polyp on the dendate line. We removed the polyp by per anal local excision due to its hard stalk after failure of colonoscopic removal. The histologic examination was showed mature stratified squamous epithelium with hyalinized vascular changes. We report a case of huge and hard anal fibroepithelial polyp with hemorroids misdignosed as cancer.

A Case of Esophageal Tuberculous Abscess / 대한소화기내시경학회지

Primary esophageal involvement by tuberculosis is rare. Clinical symptoms are variable and nonspecific in which dysphagia is the most common presenting symptom. Endoscopic findings are also diverse and nonspecific and ulcerative form is a common manifestation. For a definite diagnosis, Endoscopic biopsies are useful but typical granuloma is seen in approximately 50% of cases and acid-fast bacilli are demonstrated in less than 25% of patients. Fine needle aspiration cytology and polymerase chain reaction are helpful for diagnosis. A 54-year-old man was presented with throat discomport. Endoscopy demonstrated hematoma like lesion with pus discharge from ulceration in the proximal esophagus. Esophageal tuberculosis was confirmed based on the biopsy and culture results, and he was treated with antituberculous medications. At the follow-up endoscopy, 6 months later, previous lesion was completely healed to scar.

A Case of Hepatic Angiosarcoma Presenting as Submucosal Tumor Resulting from Gastric Invasion / 대한소화기내시경학회지

Angiosarcoma accounts for 1% of all soft tissue sarcoma. Common sites of occurrence include the skin, breast, soft tissue, and liver. It metastasizes to the lungs, bone, and spleen. The cause of hepatic angiosarcoma in the 60% of cases is unknown, although specific risk factors such as vinyl chloride, arsenic, thorotrast and external-beam irradiation have been identified. Since 1986, about eight cases of hepatic angiosarcoma have been reported in Korea, but it had not been reported in which the hepatic angiosarcoma invaded to the stomach, yet. So we report a case of histopathologically confirmed primary hepatic angiosarcoma with gastric involvement. In this case, a sixtythree-year-old female was presented with indigestion and epigastric soreness for 1 year. Endoscopic examination of the stomach revealed a submucosal tumor-like protruding mass from the antrum to angle. The mucosal surface showed severe hyperemia and shallow ulcerative change was seen. Endoscopic biopsy and percutaneous liver biopsy confirmed the diagnosis of hepatic angiosarcoma invading the gastric wall.

A Case of Boerhaave's Syndrome after Bowel Preparation with Polyethylene Glycol / 대한소화기내시경학회지

Polyethylene glycol (Colyte(R)) electrolyte lavage solution is widely used for bowel preparataion before colonoscopy and surgery. The minor complications associated with PEG solution, i.e., nausea and bloating have been reported on. However, major complications such as PEG electrolyte lavage solution-induced Mallory-Weiss tear, esophageal rupture, asystole and aspiration have rarely been reported on. Spontaneous rupture of the esophagus (Boerhaave's syndrome) is a very rare disease and it is often diagnosed late or it is misdiagnosed because of the atypical clinical symptoms. Its mortality increases proportionally to the time between esophageal rupture and treatment. It can cause a fatal outcome unless it is treated early. We authors report here on a case of spontaneous esophageal rupture after bowel preparation with polyethylene glycol.

Immune hemolytic anemia secondary to ABO minor incompatibility in renal recipients / 대한내과학회지

BACKGROUND: Immune hemolysis secondary to ABO minor incompatibility is a rare graft versus host disease in renal recipients, secondary to anti-ABO antibody produced by lymphocytes of donor origin that reacts against recipient RBCs. METHODS: To investigate the incidence and clinical features of immune hemolysis secondary to ABO minor incompatibility in renal allograft recipients, clinical records of 358 renal transplantation performed in Maryknoll Hospital since 1991 were analyzed retrospectively. RESULTS: Fifty four (15%) of 358 renal transplants were ABO minor incompatible. Immune hemolysis secondary to anti-ABO antibody developed in 5 (9.2%) of 54 ABO minor incompatible renal transplant recipients. Immune hemolysis occurred in 3 (13.6%) patients among 22 allografts from blood type O donor to A recipients and 2 (10%) patients among 20 from blood type O donor to B recipients. All 5 patients received cyclosporin with prednisolone, and MMF was administered to one patient additionally. Immune hemolysis developed on 14+/-3 days after renal transplantation and lasted for about 10+/-3 days. The maximum reduction of hemoglobin was 3.3+/-1.0 g/dL. All patients required donor type (blood type O) washed RBCs transfusion (5.0+/-2.6 units per patient) and plasmapheresis were performed in 3 patients (4.0+/-1.0 per patient). All patients recovered without deterioration of graft function. Age, number of HLA mismatch, creatinine at 1 year after transplantation, frequency of acute rejection and serum cyclosporin level during first 2 weeks were not significantly different between hemolysis group (N=5) and non-hemolysis group (N=49). Living unrelated transplantation is associated with increased incidence of immune hemolysis compared with living related transplantation (p<0.01). CONCLUSION: Although immune hemolysis secondary to ABO minor incompatibility is uncommon, we experienced cases with marked reduction of hemoglobin that required a large amount of transfusion. Therefore, this type of immune hemolysis needs to be considered as a differential diagnosis of posttransplant hemolysis. As our center routinely performs donor specific transfusion (DST), the incidence may be higher than that of other centers where DST is not usually given.

Role of Endoscopic Ultrasonography in the Diagnosis of Gastrointestinal Stromal Tumors in the Stomach

PURPOSE: Endoscopic ultrasonography (EUS) is a useful imaging procedure for the diagnosis of submucosal tumors in the stomach. The present study investigated the EUS features of benign and malignant gastrointestinal stromal tumors (GISTs) and assessed differences between the two groups. MATERIALS AND METHODS: Thirty patients with a GIST in the stomach were included in the study (23 benign and 7 malignant GISTs). We compared characteristic EUS findings (tumor size, location of tumor, regularity of the outer margin, echo-heterogeneity, presence of cystic spaces, echogenic foci and mucosal ulceration) between benign and malignant GISTs. RESULTS: Tumor sizes over 40 mm were observed in 85.7% of the malignant and 8.7% of the benign tumors (P=0.000). Intralesional cystic spaces were noted in 71.4% of the malignant and 8.7% of the benign tumors (P=0.003). The outer margin was irregular in 71.4% of the malignant and 8.7% of the benign tumors (P=0.014). 85.7% of the malignant and 13.0% of the benign tumors had an echo-heterogeneity in the tumor (P=0.001). The locations of tumor and the presence of echogenic foci or mucosal ulcerations were not different between the two groups. CONCLUSION: Tumor sizes over 40 mm, intralesional cystic spaces, irregular outer margins, and echo-heterogeneity in the tumor were significantly more frequent in malignant GISTs. EUS can provide informations in differentiating benign from malignant GISTs.

Role of Endoscopic Ultrasonography in the Diagnosis of Gastrointestinal Stromal Tumors in the Stomach

PURPOSE: Endoscopic ultrasonography (EUS) is a useful imaging procedure for the diagnosis of submucosal tumors in the stomach. The present study investigated the EUS features of benign and malignant gastrointestinal stromal tumors (GISTs) and assessed differences between the two groups. MATERIALS AND METHODS: Thirty patients with a GIST in the stomach were included in the study (23 benign and 7 malignant GISTs). We compared characteristic EUS findings (tumor size, location of tumor, regularity of the outer margin, echo-heterogeneity, presence of cystic spaces, echogenic foci and mucosal ulceration) between benign and malignant GISTs. RESULTS: Tumor sizes over 40 mm were observed in 85.7% of the malignant and 8.7% of the benign tumors (P=0.000). Intralesional cystic spaces were noted in 71.4% of the malignant and 8.7% of the benign tumors (P=0.003). The outer margin was irregular in 71.4% of the malignant and 8.7% of the benign tumors (P=0.014). 85.7% of the malignant and 13.0% of the benign tumors had an echo-heterogeneity in the tumor (P=0.001). The locations of tumor and the presence of echogenic foci or mucosal ulcerations were not different between the two groups. CONCLUSION: Tumor sizes over 40 mm, intralesional cystic spaces, irregular outer margins, and echo-heterogeneity in the tumor were significantly more frequent in malignant GISTs. EUS can provide informations in differentiating benign from malignant GISTs.

A Case of Giant Mesenteric Hemangioma with involvement of the mucosa of duodenum and pancreatic parenchyme / 대한내과학회지

A giant mesenteric hemangioma with small intestinal involvement was rarely found as the cause of recurrent gastrointestinal bleeding. Enteric hemangiomas account for 7~10% of all benign tumors of the small intestine and the jejunum is the most common location. A 52-year-old man was admitted with recurrent melena for 4 years. Submucosal tumor like elevated lesion was found at just distal Ampulla of Vater. This lesion was seen woozing type bleeding. For evaluation of bleeding focus, mesenteric angiogram was done. A mesenteric angiogram revealed normal gastro-duodenal, superior and inferior mesenteric arteries. Whole abdominal computed tomography revealed low- density lesion at distal to duodenal 2nd portion. To prevent further recurrent bleeding, Whipple's operation was done. The histologic diagnosis of the lesion was a giant mesenteric hemangioma of mesentery with involvement of the mucosa of duodenum and pancreatic parenchyme.