Cytological Features of Mammary Analogue Secretory Carcinoma of the Parotid Gland in a 15-Year-Old Girl: A Case Report with Review of the Literature

Figure 2

Cytomorphology of mammary analogue secretory carcinoma. Tumor cells were seen in a relatively flat sheet with abundant vascular supply (a). Tubules or rosette-like structures were sometimes seen (arrows, (b)). Tumor cells sometimes piled up with scattered detached cells peripherally (c). The cytoplasm of the tumor cells was slightly eosinophilic and the cell border between the tumor cells was indistinct ((d), (e)). Light-greenish material was sometimes observed at the periphery of the tumor cell cluster (arrow), which is now considered to correspond to material secreted by the tumor cells (f). With Giemsa stain, tumor cells showed slightly eosinophilic cytoplasm and intracytoplasmic granules (arrows) were rarely seen (g). Eosinophilic substance (arrowheads) showing slight metachromacy was seen inside tumor tubules/in the background ((g), (h)). (a) to (f) Papanicolaou stain; (a) and (b) FNA material; (c) to (f) imprint material; (g) and (h) Giemsa stain.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)