case_images: PMC5996643_01
case_images: Extraoral clinical examination revealed palpable and tender swelling extending from behind the ear lobe to the angle of the mouth on the left neck region
case_images: NJMS-9-64-g001.jpg
case_images: PMC5996643_01_NJMS-9-64-g001.jpg
case_images: F1
case_images: The intraoral examination showed, an ulcero-proliferative lesion involving the left postero-lateral part of the tongue extending onto the soft palate involving faucial pillars
case_images: NJMS-9-64-g002.jpg
case_images: PMC5996643_01_NJMS-9-64-g002.jpg
case_images: F2
case_images: Left submandibular lymph nodes were palpable, hard, tender, and were fixed to the underlying structures [Figure 2].
case_images: Magnetic resonance imaging showing the lesion extended into the posterior wall of the pharynx and to the base of the skull
case_images: NJMS-9-64-g003.jpg
case_images: PMC5996643_01_NJMS-9-64-g003.jpg
case_images: F3
case_images: The photomicrograph shows dysplastic stratified squamous epithelium invading the connective tissue in the form of nests, islands, and lobules
case_images: NJMS-9-64-g004.jpg
case_images: PMC5996643_01_NJMS-9-64-g004.jpg
case_images: F4
case_images: The stained sections revealed dysplastic stratified epithelium is seen invading the connective tissue in the form of nests, islands, and lobules [Figure 4].
case_images: The photomicrograph shows areas where tumor cells are proliferating in the form of chords interconnecting with each other
case_images: NJMS-9-64-g005.jpg
case_images: PMC5996643_01_NJMS-9-64-g005.jpg
case_images: F5
case_images: A few areas showed epithelial cells proliferating in the form of chords interconnecting with each other [Figure 5].
case_images: The photomicrograph shows tumor islands with areas of comedo-necrosis and focal keratinization
case_images: NJMS-9-64-g006.jpg
case_images: PMC5996643_01_NJMS-9-64-g006.jpg
case_images: F6
case_images: Islands also displayed areas of comedo-necrosis and focal keratinization [Figure 6].