| AFIP Fascicle 18 | Chapter 4.2 - Squamous Epithelial Dysplasia (Lewin and Appelman) | |
| PubMed abstracts | SM Dawsey et al studies of esophageal carcinoma in China | |
| PubMed abstracts | JC Prolla et al studies of esophageal carcinoma in Rio Grande do Sul, Brazil | |
| eMedicine article | Esophageal carcinoma | |
| PathMax | Cytopathology links of interest |