IMP3 Immunohistochemical Expression in Inverted Papilloma and Inverted Papilloma-Associated Sinonasal Squamous Cell Carcinoma

Figure 4

Heterogenous expression of IMP3 in IP-associated sinonasal SCC: (a) in well-differentiated SCC, negative areas of tumor were seen alternating with areas of moderate intensity in well-differentiated SCC (IHC ×100); (b) in moderately differentiated sinonasal SCC, focal strong cytoplasmic staining alternate with foci of cytoplasmic staining of low intensity (IHC ×100); (c) poorly differentiated SCC showed diffuse moderate to strong cytoplasmic staining (IHC ×100).

(a)

(b)

(c)