Benign Lesions in Mucosa Adjacent to Intestinal-Type Sinonasal Adenocarcinoma

Figure 1

Microphotographs of the different histological changes observed adjacent to the tumor. (a) Normal respiratory mucosa; (b) basal cell hyperplasia; (c) squamous metaplasia; (d) cuboid metaplasia. H&E staining, original magnification 200x (a, b, and c) and 400x (d).

(a)

(b)

(c)

(d)