case_images: PMC6441535_01
case_images: SC of parotid gland, epithelial neoplasm with a lobular growth pattern, and solid microcystic areas (a-b) [H/E 10X and 40X]. Tubular structures showing abundant, foamy, PAS- and Alcian Blue-positive intraluminal material (c-d). The tumor cells positive for S100 and mammaglobin (e-f), but negative for DOG-1 (g).
case_images: CRIPA2019-5103496.001.jpg
case_images: PMC6441535_01_CRIPA2019-5103496.001.jpg
case_images: fig1
case_images: Microscopic examination revealed an epithelial neoplasm with a lobular growth pattern, dense fibrous connective septa, and solid microcystic areas and tubular structures (Figures 1(a)-1(b)) showing abundant, foamy, PAS- and Alcian blue-positive intraluminal eosinophilic material. The tumor cells were positive for S100, mammaglobin (Figures 1(c)-1(d)), GCDFP15, CD117, CEA-P, and keratin 7 (images not shown), with a cell proliferation index (Ki-67) of 13%.