Pancreatic pseudocyst localized in the gastric wall after EUS-guided FNA of type 1 autoimmune pancreatitis

Recurrent gastric intramural pseudocyst: A case report and comprehensive literature review of reported cases

Intramural gastric pseudocysts are extremely rare and are often associated with pancreatitis and pancreatic pseudocysts; they can lead to complex clinical presentations requiring careful diagnosis and management. We present a case of a 57-year-old man with a history of pancreatitis and pancreatic pseudocysts who was diagnosed with intramural gastric pseudocysts. The patient was diagnosed with multiple gastric intramural pseudocysts at different locations during separate admissions and imaging studies. This indicates a recurrence of gastric intramural pseudocysts. In these cases, studies rarely discuss recurrence and its underlying causes. This highlights a significant gap in the existing literature. To provide a broader understanding, we reviewed the literature by searching major databases (PubMed, Scopus, and Web of Science) and then extracted and analyzed data from 18 articles, reaching 24 similar cases. Of the 25 patients studied (including our case), 92% were male and 8% were female. Cases had a mean age of 47.68 ± 14.82 years. Additionally, 84% of the patients had a history of alcohol consumption, and 88% had a positive history of pancreatitis. Common symptoms were abdominal pain (especially in the epigastric region), vomiting, nausea, and weight loss. In conclusion, results showed that intramural gastric pseudocysts generally occur in middle-aged men with a history of chronic or heavy alcohol consumption and pancreatitis.

Needle tract seeding and abscess associated with pancreatic fistula after endoscopic ultrasound-guided fine-needle aspiration

We present the first report of needle tract seeding with simultaneous abscess associated with pancreatic fistula occurring after endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) for pancreatic ductal adenocarcinoma (PDA). A 72-year-old woman complained of fever 18 days after EUS-FNA for PDA of the pancreatic tail with a retention cyst. An abscess associated with pancreatic fistula containing necrotic debris formed in the EUS-FNA needle tract was successfully treated with endoscopic drainage and antibiotics. Distal pancreatectomy with partial gastrectomy was performed after neoadjuvant chemotherapy. Complete resection was achieved but peritoneal lavage cytology was positive for cancer. Pathology of the resected specimen revealed cancer cells invading the gastric submucosa at the EUS-FNA puncture site from the serosal side. The lining of the retention cyst was free of cancer cells. Liver metastases and peritoneal carcinomatosis were seen 3 months after surgery. While needle tract seeding has recently received attention as a complication of EUS-FNA, endoscopists should also be alerted to the possibility of abscess associated with pancreatic fistula after EUS-FNA for PDA.