Related Experiment Video
Updated: Jun 25, 2026
Establishment and Evaluation of a Risk Prediction Model for Pathological Escalation of Gastric Low-Grade Intraepithelial Neoplasia
Published on: February 16, 2024
[Evaluation of endoscopic visualisation for identifying premalignant gastric lesions in a Columbian population using
Julio Alexander Díaz Pérez1, Carlos Alberto García Ramírez, Edgar Julián Ferreira Bohorquez
1Grupo de Investigación en Patología Estructural, Funcional y Clínica, Universidad Industrial de Santander, Bucaramanga, Colombia. pat_uis@yahoo.com
Aim:
To evaluate the performance of endoscopic visualization in the identification of premalignant gastric lesions, with histopathological examination of biopsy samples as a reference test, in Bucaramanga, Colombia.
Location:
League for the Fight Against Cancer, Bucaramanga, Colombia.
Design:
Diagnostic technology evaluation with cross-sectional sampling.
Measurements:
We calculate the sensitivity, specificity, positive predictive value, negative predictive value, likelihood ratio (+), likelihood ratio (-), kappa index and the prevalence rate kappa.
Results:
A total of 155 patients were studied, with a mean age of 45.43 (14.15) years and an approximate male:female ratio of 2:1. The endoscopic visualization had a sensitivity of 87.84%, a specificity of 55.56%, a positive predictive value of 64.36%, a negative predictive value of 83.33%, a likelihood ratio+of 1.98, a likelihood ratio-de 0.22 and a kappa index of 0.4272, in the identification of preneoplastic lesions of the stomach in a population with a disease prevalence of 47.74%.
Conclusions:
The endoscopic visualization of the gastrointestinal mucosa, allows a moderate and fast identification of early preneoplastic lesions, providing an opportunity of its early histopathological diagnosis.
Related Concept Videos
01:28Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
01:29Endoscopic Procedures I: Esophagogastroduodenoscopy
During an EGD, the endoscope can be used to:
01:26Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...
01:26Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
01:25Endoscopic Procedures II: Colonoscopy