A case report of duodenal arteriovenous malformation: usefulness of intraoperative indocyanine green angiography for precise identification of the lesion

Background Arteriovenous malformation (AVM) of the gastrointestinal (GI) tract can cause bleeding. The treatment choice for GI tract AVM is surgical resection of the involved bowel segment with complete resection of the nidus. The AVM formed in the duodenum or pancreatic head could also cause gastrointestinal bleeding, and there are several reports of pancreaticoduodenectomy as its treatment. However, if the area of AVM can be accurately identified during surgery, it may be possible to completely resect the AVM while preserving the organ. We report a case of duodenal AVM in a patient successfully treated with a subtotal stomach-preserving duodenal bulb resection using intraoperative indocyanine green (ICG) angiography technique. Case presentation An 18-year-old man was diagnosed with duodenal AVM after several examinations for anemia and was referred to our hospital for further treatment. Preoperative imaging studies showed that the inflow vessels of this duodenal AVM were the inferior pyloric artery and the superior duodenal artery, and the AVM was localized to the duodenal bulb. Thereafter, stomach-preserving duodenal bulb resection preceded by ligation of the inflow vessels was performed. During the surgery, ICG angiography clearly demonstrated the area, where the nidus was distributed, and a duodenal bulb resection with complete resection of the AVM was successfully performed. There was no recurrence at the 6-month follow-up. Conclusions Intraoperative ICG angiography was a useful procedure for precise identification of the AVM of the GI tract.

Duodenal stenosis associated with an ectopic opening of the common bile duct into the duodenal bulb: a case report

Background Ectopic opening of the common bile duct is a rare congenital biliary anomaly. Herein, we present a case of duodenal stenosis with ectopic opening of the common bile duct into the duodenal bulb. Case presentation A 54-year-old man was referred with fever, nausea, and vomiting. He had experienced epigastric pain several times over the past 30 years. Endoscopy showed a post-bulbar ulcer, a submucosal tumor of the duodenum, and a small opening with bile secretion. Contrast duodenography revealed duodenal stenosis and bile reflux with a common bile duct deformity. Pancreatoduodenectomy was performed because of the clinical suspicion of a biliary neoplasm or groove pancreatitis. The resected specimen showed an ectopic opening of the common bile duct into the duodenal bulb and no tumor. Conclusions Ectopic opening of the common bile duct into the duodenal bulb is complicated by a duodenal ulcer, deformity, and stenosis mimicking groove pancreatitis or pancreatic tumors. Although rare, we should be aware of this anomaly for an accurate diagnosis.

Renal cell carcinoma with unusual metachronous metastasis up to 22 years after nephrectomy: two case reports

Introduction Renal cell carcinoma is the third most common malignant tumor in the urogenital tract. An estimated 25% of renal cell carcinomas are in stage IV when diagnosed. The 5-year-survival with stage IV is about 20%. Late metastases are found after an extended disease-free interval up to 20 years after primary nephrectomy. Case presentation Here, we present two cases with late-onset metastasis of renal cell carcinoma with different clinical presentations. The first patient, an 88-year-old Caucasian man, presented with bleeding of the upper gastrointestinal tract. Biopsies taken from the duodenal bulb showed a tumor compatible with a solitary metastasis from renal cell carcinoma 22 years ago. The second patient, a 79-year-old Caucasian man, consulted our gastroenterological department with results of an outpatient computed tomography scan with multiple suspected tumor areas in the liver, omentum, thyroid, and mediastinum. A computed tomography-guided liver biopsy was performed that showed a clear-cell tumor consistent with a metastasis of the renal cell carcinoma 17 years ago. Conclusion Both cases show that patients with a history of renal cell carcinoma should be followed up for a longer time than patients with other malignant tumors.

EP.WE.718An audit of the photographic documentation of upper gastrointestinal endoscopy at Cork University Hospital

Introduction A joint statement by the British Society of Gastroenterology and the Association of Upper Gastrointestinal Surgeons in 2017 recommended that photographic documentation of relevant anatomical landmarks should be a Key Performance Indicator of oesophagogastroduodenoscopy (OGD). The aim of this study was to assess this photodocumentation standard among surgeons and gastroenterologists in a tertiary referral centre. Methods Cork University Hospital endoscopy unit records were examined for a 2-month period from 01/10/20-27/11/20. OGDs were performed by 3 consultant colorectal surgeons and 4 consultant gastroenterologists over the time period. Demographic data and photodoumentation information were obtained from the Endoraad GI reporting tool. Surgeons and gastroenterologists performances was compared using the chi-squared test. Results 104 OGDs were analysed. Fifty-three (51%) OGDs were performed in women and 51(49%) OGDs were performed by surgeons. The documentation for each site was; gastro-oesophageal junction- 68% (69/102), fundus on retroflexion- 71% (72/102), gastric body- 32% (33/102), antrum- 61% (62/102), and duodenal bulb- 35% (36/102), without significant differences (p > 0.05) for these sites between surgeons and gastroenterologists. There was more documentation of the upper oesophagus by surgeons (31% vs.12%, p = 0.030) and there was more documentation of the distal duodenum by gastroenterologists (90% vs.47%, p < 0.01). Pictures were unable to be saved in two patients due to technical failure. Discussion Photodocumentation is increasingly important from a medico-legal viewpoint. There is room for improvement in our centre, but these rates are comparable to other published series. An educational session is being planned and following this adherence to photodocumentation standards will be re-examined.

Resección endoscópica de hamartoma gigante de glándulas de Brunner. Reporte de un caso

Brunner's gland hamartoma or hyperplasia is a rare benign neoplasm of the small intestine, usually small, that is discovered incidentally on an upper digestive endoscopy or imaging tests. When it reaches a large size, it can cause digestive bleeding or intestinal obstruction. The pathogenesis is unknown. The endoscopic presentation can be nodular, polypoid or a diffuse glandular proliferation with thickening of the duodenal wall, and may be mistaken for a malignant neoplasm. Endoscopic resections of large Brunner's gland hamartomas in the duodenum is little reported in literature, due to its low incidence and diagnostic difficulty. The surgical approach is associated to greater morbidity compared to an endoscopic approach. The case of a 62-year-old patient is reported, who presented melena and symptomatic anemia, secondary to a giant polyp in the duodenal bulb. The polyp was successfully resected endoscopically without complications, which made it possible to avoid a more extensive surgical procedure. Histopathological examination of the whole specimen showed a Brunner's gland hamartoma. Conclusion: Brunner's gland hyperplasia or hamartoma is a benign neoplasm that rarely produces symptoms. Large lesions can become symptomatic and a high clinical-endoscopic suspicion and an evaluation of the extension are necessary before applying any therapeutic procedure, in order to avoid complex surgeries and favor a complete and safe endoscopic resection.

Outcomes of Endoscopic Ultrasound-Guided Biliary Drainage in a General Hospital for Patients with Endoscopic Retrograde Cholangiopancreatography-Difficult Transpapillary Biliary Drainage

Endoscopic ultrasound-guided biliary drainage (EUS-BD) has been developed as an alternative treatment for percutaneous transhepatic biliary drainage for patients with bile duct stenosis. At specialized hospitals, the high success rate and effectiveness of EUS-BD as primary drainage has been reported. However, the procedure is highly technical and difficult, and it has not been generally performed. In this study, we retrospectively examined the effectiveness of EUS-BD in ERCP-difficult patients with distal bile duct stenosis. We retrospectively examined 24 consecutive cases in which EUS-BD was performed at our hospital for distal bile duct stenosis from October 2018 to December 2020. EUS-guided choledochoduodenostomy (EUS-CDS) was selected for cases that could be approached from the duodenal bulb, and EUS-HGS was selected for other cases. In the EUS-CDS and EUS-HGS groups, the technical success rates were 83.3% (10/12] and 91.7% (11/12], respectively. An adverse event occurred in one case in the EUS-CDS group, which developed severe biliary peritonitis. The stent patency period was 91 and 101 days in the EUS-CDS and EUS-HGS groups, respectively. EUS-BD for ERCP-difficult patients with distal bile duct stenosis is considered to be an effective alternative for biliary drainage that can be performed not only in specialized hospitals but also in general hospitals.

A Quantitative Assessment of Mucosal Eosinophils in the Gastrointestinal Tract of Children Without Detectable Organic Disease

Background Accurate measurements of mucosal eosinophil concentrations in gastrointestinal tracts of healthy children are necessary to differentiate health and disease states in general, and better define eosinophilic gastrointestinal diseases. Study We retrospectively reviewed gastrointestinal biopsies from children with macroscopically normal endoscopies, who, after a minimal follow-up of one year, were not diagnosed with any organic disease. Peak eosinophil concentrations and distributions were assessed from each segment of the gastrointestinal tract. Results Three centers (Italy, United Kingdom, and Israel) contributed 202 patients (median age 13 years IQR 9.5–15.5, range 1–18 years). Median (IQR, range) eosinophil concentrations (eos/mm2) were: esophagus 0 (0–0, 0–84), stomach 0 (0–4, 0–84), duodenal bulb 20 (13–30, 7–67), second part of duodenum 20 (13–29, 0–105), terminal ileum 29 (14–51, 0–247), cecum 53 (37–89, 10–232), ascending colon 55 (25–84, 0–236), transverse colon 38 (21–67, 4–181), descending colon 29 (17–59, 0–114), sigmoid colon 25 (13–40, 0–215) and rectum 13 (4–28, 0–152). Significant geographical variance was present, however, no differences in eosinophil concentrations were identified between children with resolving symptoms vs. those with functional diagnoses, nor across age groups. Conclusions Standardized eosinophil concentrations from the gastrointestinal tracts of children without organic disease will serve to better define both health and disease states. No differences were found between resolved symptoms vs. functional diagnoses nor between age groups in this pediatric cohort.