Two Different Cell Populations Is an Important Clue for Diagnosis of Primary Cutaneous Adenoid Cystic Carcinoma: Immunohistochemical Study

Figure 2

Primary cutaneous adenoid cystic carcinoma. (a). p63 highlights the myoepithelial cells. (b). EMA shows positivity in only a few lumina. (c). CK5/6 positivity in PCACC. (d). Although collagen 4 positivity has weak or medium intensity, it highlights the luminal material. (e). S100 is negative in our case and only positive in dendritic cells. (f). Alcian Blue positivity in luminal secretion. Original magnification: (a, b, c, e) ×100; (d) ×200; (f) ×400.

(a) p63

(b) EMA

(c) CK5/6

(d) Collagen

(e) S100

(f) Alcian Blue