PMC5175081_01
(A-B) Hematoxylin and eosin (H&E) stained section showing sheets of myoepithelial cells and ductular structures lined with epithelial cells set in chondromyxoid stroma (H&E, A: x40; B: x100). (C) Adjacent to the lesion, normal laryngeal cartilage can be seen (H&E, x100).
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PMC5175081_01_NCI-3-67-g001.jpg
F1
Epithelial component consisted of relatively uniform-appearing cells arranged in tubules and small, nested aggregates (Figure 1).
Immunohistochemistry indicates that the myoepithelial cells cytoplasm is focally positive for S100 protein (A) and glial fibrillary acidic protein (GFAP) (B) (A: x100; B: x100).
NCI-3-67-g002.jpg
PMC5175081_01_NCI-3-67-g002.jpg
F2
Myoepithelial component was positive for p63, S100 protein (Figure 2A), and glial fibrillary acidic protein (GFAP) (Figure 2B); and focally positive smooth muscle actin (SMA).