case_images: PMC4344977_01
case_images: GCT was observed strongly positive with S-100 (x100)
case_images: ijo-27-069-g002.jpg
case_images: PMC4344977_01_ijo-27-069-g002.jpg
case_images: F2
case_images: While a diffuse and full-layered positive staining with Ki-67 is present on epithelium of atypical squamous islands (red arrow), a limited staining is present on basal-parabasal layers of non-neoplastic epithelium (black arrow) (Ki-67, x200)
case_images: ijo-27-069-g003.jpg
case_images: PMC4344977_01_ijo-27-069-g003.jpg
case_images: F3
case_images: The Ki-67 proliferation index was 1% in GCT, although nuclear positive staining was observed on all epithelial thickness of in situ and invasive foci of squamous cell carcinoma (Fig. 3).
case_images: While a diffuse and strong positive staining with p63 is present on atypical squamous islands (red arrow), a limited staining is present on basal-parabasal layers of non-neoplastic epithelium (black arrow) (p63, x200)
case_images: ijo-27-069-g004.jpg
case_images: PMC4344977_01_ijo-27-069-g004.jpg
case_images: F4
case_images: During immunohistochemical evaluation of squamous cell carcinoma using P63, a similar staining pattern was observed with Ki-67 (Fig.4). 
case_images: Re-excised mass in a diamond shape
case_images: ijo-27-069-g005.jpg
case_images: PMC4344977_01_ijo-27-069-g005.jpg
case_images: F5
case_images: The tumor was re-excised; leaving a surgical safety margin of 1 cm from all directions to the previous surgical area (Fig.5).