Endoscopic and Histopathology Characteristics in Patients with Esophageal High-Grade Intraepithelial Neoplasia

Background/Aims: To correlate the endoscopic characteristics with the histopathology of specimens of esophageal high-grade intraepithelial neoplasia obtained by endoscopic submucosal dissection (ESD). Methods: This was a retrospective study developed from January 2010 to December 2015. The study included 169 patients who underwent ESD and were diagnosed with esophageal high-grade intraepithelial neoplasia according to endoscopic forceps biopsy, Lugol staining, endoscopic ultrasonography, computed tomography, and Narrow-Band Imaging. The demographic, endoscopic, and histopathologic characteristics were analyzed. Results: A total of 19 cases (11.2%) had a change in diagnosis after histopathology exam and 16 (9.5%) needed a change in established treatment. An increase in the severity of disease was correlated with a lesion size > 2 cm, less than 4 samples in biopsy, and depressed or excavated patterns (p < 0.05). One hundred forty patients (82.8%) underwent curative resection. Lesions with leukoplakia (p < 0.001) and negative Lugol staining (p = 0.028) were independent risk factor for non-curative resection. Conclusion: This study confirms that lesion size > 2 cm, depressed and excavated patterns, and ≤4 biopsy samples are independent risk factors for histological grade changes compared to pre-endoscopic treatment diagnosis. Similarly, leukoplakia and no Lugol staining of lesions are independent risk factors for non-curative resection.