Precursor Lesions for Sporadic Pancreatic Cancer: PanIN, IPMN, and MCN

Figure 3

(a) PanIN 1A lesion with flat epithelium, basal nuclei, and abundant supranuclear mucin. (b) PanIN 1A and 1B (arrow) lesion with papillary architecture and slight nuclear atypia (H&E ×20).

(a)

(b)