case_images: PMC6457284_01
case_images: Clinical presentation of the tumor. Surgical scar on left buccal mucosa (seen inside circle) (a). The residual tumor after excision (b).
case_images: CRIPA2019-2074504.001.jpg
case_images: PMC6457284_01_CRIPA2019-2074504.001.jpg
case_images: fig1
case_images: There was no pain on pressure in the region of the scar (Figure 1(a)). The margin was resected under general anesthesia and sent for histopathological examination (Figure 1(b)).
case_images: Histopathological features of SC. The excised tissue with areas of minor salivary gland (shown in inset) (a). The mass was composed of tumor cells with eosinophilic cytoplasm and had a microcystic, tubular, papillary cystic structure with eosinophilic secretory material (b, c). Few areas with hemosiderin deposition were also recognized (c). The secretory component stained positive for d-PAS (d).
case_images: CRIPA2019-2074504.002.jpg
case_images: PMC6457284_01_CRIPA2019-2074504.002.jpg
case_images: fig2
case_images: Furthermore, normal muscle tissue and atrophied salivary gland tissues were also seen (Figure 2).
case_images: Immunohistochemical staining of the tissues. The cells were strongly positive for vimentin (a), S-100 (b), and mammaglobin (c), but negative for DOG-1 (d).
case_images: CRIPA2019-2074504.003.jpg
case_images: PMC6457284_01_CRIPA2019-2074504.003.jpg
case_images: fig3
case_images: Mammaglobin was strongly positive, whereas discovered on gastrointestinal stromal tumors 1 (DOG-1) showed a negative reaction (Figure 3).