Percutaneous direct endoscopic pancreatic necrosectomy.

Approximately 10%-20% of the cases of acute pancreatitis have acute necrotizing pancreatitis. The infection of pancreatic necrosis is typically associated with a prolonged course and poor prognosis. The multidisciplinary, minimally invasive "step-up" approach is the cornerstone of the management of infected pancreatic necrosis (IPN). Endosonography-guided transmural drainage and debridement is the preferred and minimally invasive technique for those with IPN. However, it is technically not feasible in patients with early pancreatic/peripancreatic fluid collections (PFC) (< 2-4 wk) where the wall has not formed; in PFC in paracolic gutters/pelvis; or in walled off pancreatic necrosis (WOPN) distant from the stomach/duodenum. Percutaneous drainage of these infected PFC or WOPN provides rapid infection control and patient stabilization. In a subset of patients where sepsis persists and necrosectomy is needed, the sinus drain tract between WOPN and skin-established after percutaneous drainage or surgical necrosectomy drain, can be used for percutaneous direct endoscopic necrosectomy (PDEN). There have been technical advances in PDEN over the last two decades. An esophageal fully covered self-expandable metal stent, like the lumen-apposing metal stent used in transmural direct endoscopic necrosectomy, keeps the drainage tract patent and allows easy and multiple passes of the flexible endoscope while performing PDEN. There are several advantages to the PDEN procedure. In expert hands, PDEN appears to be an effective, safe, and minimally invasive adjunct to the management of IPN and may particularly be considered when a conventional drain is in situ by virtue of previous percutaneous or surgical intervention. In this current review, we summarize the indications, techniques, advantages, and disadvantages of PDEN. In addition, we describe two cases of PDEN in distinct clinical situations, followed by a review of the most recent literature.

Gastric glomus tumor: A rare etiology of upper gastrointestinal bleed.

The glomus tumor of stomach is an unusual submucosal mesenchymal tumor of the gastrointestinal tract. We describe a 42-year-old female who presented with chronic anemia and an episode of painless hematemesis. A preoperative diagnosis of the probable gastric gastrointestinal stromal tumor was made. Post-surgical histopathological examination of the specimen demonstrated a glomus tumor of the stomach confirmed on immunohistochemistry. The present case highlights the importance of morphology and immunohistochemistry in differentiating the subepithelial tumors of the stomach and one must consider glomus tumor in differential diagnosis of these gastric lesions.

Ectopic pancreas at the ampulla of Vater diagnosed with endoscopic snare papillectomy: A case report and review of literature.

BACKGROUND: Ectopic pancreas is a rare developmental anomaly that results in a variety of clinical presentations. Patients with ectopic pancreas are mostly asymptomatic, and if symptomatic, symptoms are usually nonspecific and determined by the location of the lesion and the various complications arising from it. Ectopic pancreas at the ampulla of Vater (EPAV) is rare and typically diagnosed after highly morbid surgical procedures such as pancreaticoduodenectomy or ampullectomy. To our knowledge, we report the first case of confirmed EPAV with a minimally invasive intervention. CASE SUMMARY: A 71-year-old male with coronary artery disease, presented to us with new-onset dyspepsia with imaging studies revealing a 'double duct sign' secondary to a small subepithelial ampullary lesion. His hematological and biochemical investigations were normal. His age, comorbidity, poor diagnostic accuracy of endoscopy, biopsies and imaging techniques for subepithelial ampullary lesions, and suspicion of malignancy made us acquire histological diagnosis before morbid surgical intervention. We performed balloon-catheter-assisted endoscopic snare papillectomy which aided us to achieve en bloc resection of the ampulla for histopathological diagnosis and staging. The patient's post-procedure recovery was uneventful. The en bloc resected specimen revealed ectopic pancreatic tissue in the ampullary region. Thus, the benign histopathology avoided morbid surgical intervention in our patient. At 15 mo follow-up, the patient is asymptomatic. CONCLUSION: EPAV is rare and remains challenging to diagnose. This rare entity should be included in the differential diagnosis of subepithelial ampullary lesions. Endoscopic en bloc resection of the papilla may play a vital role as a diagnostic and therapeutic option for preoperative histological diagnosis and staging to avoid morbid surgical procedures.

A comparative observational study of early versus delayed feeding after percutaneous endoscopic gastrostomy.

BACKGROUND: Percutaneous endoscopic gastrostomy (PEG) is the procedure of choice for long-term enteral feeding. OBJECTIVE: This prospective observational study was carried out to compare the safety of commencing feeding 3 h compared to 16-24 h after PEG tube placement. METHODS: One hundred and ten patients with oropharyngeal malignancies who had consented for PEG were enrolled. Trial-specific consent and IRB approval were not obtained because at the time when this study was done, this was not mandatory for observational studies which involved standard procedures. Alternate patients were started on early feeding within 3 h (group I) or after overnight observation of 16 to 24 h (group II). Five hundred milliliters of Ringer's lactate was infused over 4 h initially, followed 2 h later by 200 mL of formula feed. The patients were advised to take bolus feeds of 200 mL every 2 h and oral feeds ad libitum from the next day. All patients were evaluated on days 1, 2, 7, and 30. RESULTS: There were 55 patients (47 males) in group I and 54 patients (38 males) in group II who were matched for age (mean age 46.1 and 46.1 years, respectively). Complications included PEG site infection (1), peristomal leak (3), and displacement of the PEG tube (1) in group I. PEG site infection was seen in five patients in group II. All the complications were managed conservatively on an ambulatory basis. CONCLUSION: Initiation of tube feeding 3 h after an uncomplicated PEG was safe, well tolerated, and helped to reduce the hospital stay.