PMC5241491_01
Images of the first case: (a) preoperative image of the oral cavity, (b) enucleated material, (c) schwannoma with massive cellular and fibrotic stroma (40x magnification), and (d) image of the oral cavity at the postoperative 18th month.
CRID2017-7401631.001.jpg
PMC5241491_01_CRID2017-7401631.001.jpg
fig1
Physical examination revealed a painless, solid, asymptomatic mass, approximately 2 x 2 cm in size with a rough surface in the left palatal region (Figure 1(a)). The encapsulated material was sent for histopathological examination (Figure 1(b)). Cellular atypia or mitotic activity was not observed (Figure 1(c)). The follow-up period (18 months) was uneventful (Figure 1(d)).
PMC5241491_02
Images of the second case: (a) periapical radiographic image of the mandibular cavity that occurred secondary to schwannoma, (b) enucleated material, (c) fusiform mesenchymal cells forming cellular (Antoni type A) and loose (Antoni type B) areas (40x magnification), and (d) oral cavity at the postoperative 1st year.
CRID2017-7401631.002.jpg
PMC5241491_02_CRID2017-7401631.002.jpg
fig2
Radiographic examination revealed a cyst-like radiolucency with a regular margin at the apex of the affected tooth (Figure 2(a)). On histological examination of the excised mass (Figure 2(b)), a collagenous lesion characterized by nonatypical cells with long, fusiform, and wavy nuclei arranged to form loose clusters was seen. Cytologic atypia, high-mitotic activity, or necrosis was not observed (Figure 2(c)). The follow-up period of one year was uneventful (Figure 2(d)).