Synchronous HPV-Related Cancer of Bilateral Tonsils Detected Using Transoral Endoscopic Examination with Narrow-Band Imaging

Figure 4

Histopathological results ((a), (b), and (c) right side; (d), (e), and (f) left side). Histopathological analysis of the biopsied tonsillar specimen revealed poorly differentiated SCC ((a) and (d)). Immunohistochemical staining for p16 was strongly positive in both lesions ((b) and (e)). ISH was positive for high-risk HPV ((c) and (f)).

(a)

(b)

(c)

(d)

(e)

(f)