Diagnostic Cytology
Fig. 22.8 Pleomorphic adenoma. (A) Clinical presentation. (B) Aspirate showing the dense, fibrillar chondromyxoid stroma and monomorphous
myoepithelial cells (May-Grünwald-Giemsa x LP). (C) The fibrillar myxoid stroma is easily identified in May-Grünwald-Giemsa stain (pink) (x HP). (D) Poorly visible
stroma in Papanicolaou (x HP).
Fig. 22.9 Pleomorphic adenoma. Myoepithelial cells with round or oval
nuclei with evenly distributed chromatin and tiny nucleoli. Epithelial cells
are sometimes seen mixed with typical myoepithelial cells (May-Grünwald-
Giemsa x HP).
Fig. 22.10 Pleomorphic adenoma. The finding of few distinctly atypical
myoepithelial cells should not lead to an overdiagnosis of carcinoma
ex pleomorphic adenoma (May-Grunwald-Giemsa x HP).
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