Publications by authors named "Yasumi Katayama"
Article Synopsis
- Esophageal cell tumors are uncommon, but a case study presented a 48-year-old woman with an elevated esophageal lesion and long-segment Barrett's esophagus identified through an endoscopy.
- Endoscopic ultrasonography revealed a 15 mm tumor that extended from the lamina propria mucosa to the submucosa, which was later diagnosed as a granular cell tumor based on biopsy results showing specific cell characteristics.
- This case marks the first documented instance of a granular cell tumor arising in the context of long-segment Barrett's esophagus, and the tumor was successfully removed via endoscopic submucosal dissection.
Article Synopsis
- The study explores the relationship between gastric cancer (GC) and the Kyoto classification score for gastritis, particularly how these scores change after the eradication of infection that can lead to GC.
- It involved evaluating 30 early GC patients and 30 chronic gastritis (GA) patients three years prior to GC onset through endoscopy and pathology assessments.
- Results showed that the Kyoto classification scores and modified atrophy scores were significantly higher in the GC group, indicating that monitoring these scores post-eradication is crucial for predicting GC onset in at-risk patients.
Article Synopsis
- Transcatheter arterial chemoembolization (TACE) for hepatocellular carcinoma can lead to complications like fever, abdominal pain, and liver dysfunction.
- In a 68-year-old male patient, persistent symptoms after TACE were linked to bile duct obstruction from necrotic tumor material.
- The case highlights the need to consider bile duct issues when evaluating post-TACE complications.
Article Synopsis
- A 66-year-old woman with chronic anorexia was hospitalized after not eating for three days, showing severe anemia (hemoglobin of 3.3 g/dL) and a large gastric ulcer discovered via esophagogastroduodenoscopy.
- A biopsy indicated irregular cell proliferation, raising concerns for possible liver-related issues, while CT scans did not show free air in the abdomen.
- Despite conservative treatment, her condition worsened, leading to surgery where a total gastrectomy and partial hepatectomy were performed, revealing non-malignant findings, highlighting the rarity of gastric ulcers invading the liver in current medical contexts.
Progress of ulcerative colitis patients during the COVID-19 pandemic.
World J Clin Cases
August 2023
Article Synopsis
- The study investigates the impact of chronic stress from the COVID-19 pandemic on ulcerative colitis (UC) patients, particularly after the initial wave of infections that exacerbated their condition.
- It evaluates 289 UC patients over three years (2020, 2021, and 2022), measuring disease activity through various indices and clinical scores.
- Results show that while UC symptoms worsened during the first wave in 2020, patients experienced significant recovery in 2021 and maintained stability in 2022, despite ongoing pandemic stress.
A case of eosinophilic pancreatitis in a patient with ulcerative colitis.
Oxf Med Case Reports
February 2023
Article Synopsis
- - Eosinophilic pancreatitis (EP) is a rare condition marked by a significant presence of eosinophils in the pancreas, which can lead to inflammation.
- - A 40-year-old man who had ulcerative colitis for many years developed acute pancreatitis after starting treatment with golimumab, prompting further medical investigation.
- - A biopsy revealed eosinophil infiltration in the pancreas, leading to a diagnosis of EP, for which he was treated with corticosteroids.
A 70-year-old Japanese man with a submucosal gastric mass that continued to increase in size underwent endoscopic submucosal dissection using the pocket creation method. Histologically, some epithelial cell nuclei were enlarged, but there was little atypia overall and no sign of malignancy, suggesting a diagnosis of submucosal heterotopic gastric gland (SHGG). SHGG that enlarges over time has been associated with gastric cancer, but a preoperative diagnosis is difficult.
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- Endoscopic-ultrasound-guided hepaticogastrostomy (EUS-HGS) can lead to significant complications, but using an ERCP contrast catheter during the procedure may help lower these risks.
- A study involving 22 cases showed that those who underwent bile aspiration during the procedure had significantly fewer adverse events compared to those who did not.
- The findings suggest that incorporating track dilation and bile aspiration with an ERCP contrast catheter could be beneficial in minimizing complications during EUS-HGS with plastic stent placement.
Article Synopsis
- A study was conducted to assess the effectiveness and safety of a duckbill-type anti-reflux self-expandable metal stent (D-ARMS) for treating distal malignant biliary obstruction associated with duodenal invasion.* -
- Ten patients were analyzed; results showed no instances of non-occlusion cholangitis, but 20% experienced recurrent biliary obstruction (RBO), primarily due to sludge and overgrowth.* -
- The D-ARMS demonstrated promise as a suitable option for this condition, with a median time to RBO of 382 days and only one adverse event reported (cholecystitis).*
Use of a twin-channel endoscope for removal of a lumen-apposing metal stent that migrated spontaneously after cystogastrostomy.
J Hepatobiliary Pancreat Sci
September 2022
Kobori and colleagues report a case of late-onset spontaneous internal migration of a lumen-apposing metal stent in a patient hospitalized with obstructive jaundice caused by a pancreatic fluid collection. Although difficult, it was possible to remove the migrated stent by grasping it with two forceps using a twin-channel endoscope.
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- - This study investigates how the expression of gastrin receptors (GR) in gastric cells relates to both the presence of fundic gland polyps (FGPs) and the effects of proton pump inhibitors (PPIs) on gastric mucosa.
- - Key findings show that gastrin receptor expression in parietal cells is influenced by PPI use, indicating that changes in cell compartmentalization could reflect certain pathological conditions in the stomach lining.
- - The research concludes that the distribution of GR expression could help assess the health of the gastric mucosa, especially in patients with a history of PPI medication and those with FGPs.
Background: In 2020, the world faced the unprecedented crisis of coronavirus disease 2019 (COVID-19). Besides the infection and its consequences, COVID-19 also resulted in anxiety and stress resulting from severe restrictions on economic and social activities, including for patients with ulcerative colitis (UC). Fresh acute stress exerts stronger influences than continuous stress on UC patients.
View Article and Find Full Text PDFTwo cases of gastric penetration by fish bones with differing courses.
Oxf Med Case Reports
July 2021
Most foreign bodies swallowed accidentally are naturally excreted. Gastric penetration by a fish bone is rare due to anatomical and physiological features such as the thick stomach wall, wide lumen and gastric acid. The most common penetration site is the antral region.
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- - The Kyoto classification of gastritis aims to simplify diagnostics by focusing on infection status and potential gastric cancer risk, and this study assessed its ability to predict future gastric cancer occurrences based on retrospective data.
- - Researchers analyzed records from 50 patients who underwent gastrointestinal endoscopy 2-3 years before being diagnosed with early gastric cancer, comparing their Kyoto gastritis risk scores with a control group.
- - The findings indicate that certain factors like atrophy and total risk scores were significantly higher in patients who later developed gastric cancer, suggesting that a high atrophy score, even post-eradication treatment, can signal a greater risk for the disease.
Article Synopsis
- A 43-year-old Japanese man with Cronkhite-Canada Syndrome (CCS) underwent surgery for gastric cancer that was not related to Helicobacter pylori infection.
- The tumor was identified as a low-grade, well-differentiated adenocarcinoma with specific cell markers indicating gastric origins.
- The case suggests that H. pylori infection isn't necessary for developing gastric cancer in patients with CCS, highlighting a need for further research on the cancer risks associated with CCS independent of H. pylori.
Article Synopsis
- - The article discusses gastric epithelial neoplasms that show chief cell differentiation, specifically focusing on a type called "gastric adenocarcinoma of fundic gland mucosa type" (GA-FGM), which may be more aggressive than others.
- - A five-year case study is presented where a tumor diagnosed as GA-FGM was monitored, revealing minimal changes in appearance but significant histological progression, indicating deeper tissue involvement.
- - The study suggests that the presence of other oxyntic gland neoplasms appearing either at the same time or later may point to a shared underlying cause for these types of gastric lesions.
Purpose: Pancreatic/gastrointestinal tract neuroendocrine neoplasm (NEN) is divided into neuroendocrine tumor (NET) and neuroendocrine carcinoma (NEC) according to the grade of malignancy, and differences are seen in clinical prognosis. NET, and rectal NET in particular, is often treated endoscopically. Endoscopic mucosal resection (EMR) was previously the main intervention for rectal NET, but EMR with a ligation device (EMR-L) and endoscopic submucosal dissection (ESD) are now also used.
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- The study investigates predictors of recurrent bleeding and readmission in patients with colonic diverticular bleeding, aiming to reduce hospital readmissions within 90 days.
- A total of 144 patients were analyzed, with 17 experiencing recurrent bleeding that required readmission and 127 without such issues.
- Findings indicate that hypovolemic shock on admission, need for blood transfusion, and hyperlipidemia are significant factors associated with recurrence, with shock being a strong predictor of both outcomes.