case_images: PMC4065430_01
case_images: Intraoral picture revealing a solitary swelling in the retromolar region
case_images: JOMFP-18-127-g001.jpg
case_images: PMC4065430_01_JOMFP-18-127-g001.jpg
case_images: F1
case_images: Clinical examination revealed a 2 x 1.5 cm2 in dimensions, well-circumscribed, lobulated and pinkish mass on the right retromolar area [Figure 1].
case_images: Photomicrograph showing neoplastic cells arranged in solid sheets, nests, columns/cords and separated by fibrovascular network (H&E stain, x100)
case_images: JOMFP-18-127-g002.jpg
case_images: PMC4065430_01_JOMFP-18-127-g002.jpg
case_images: F2
case_images: Histopathologically, hematoxylin and eosin stained sections revealed a well-circumscribed tumor composed of granular cells that were arranged in solid sheets, alveoli, nests, columns or cords with scattered focal clear cells throughout the tumor tissue, separated by a delicate fibrovascular network [Figure 2].
case_images: Photomicrograph showing polygonal tumor cells with centrally placed nuclei and abundant dense granular eosinophilic cytoplasm (H&E stain, x400)
case_images: JOMFP-18-127-g003.jpg
case_images: PMC4065430_01_JOMFP-18-127-g003.jpg
case_images: F3
case_images: Abundant cytoplasm, with centrally located nucleus and little mitotic activity were seen [Figure 3].
case_images: Photomicrograph showing abundant cytoplasmic granules (PTAH stain, x400). PTAH = Phosphotungstic acid-hematoxylin
case_images: JOMFP-18-127-g004.jpg
case_images: PMC4065430_01_JOMFP-18-127-g004.jpg
case_images: F4
case_images: To confirm the diagnosis, phosphotungstic acid-hematoxylin (PTAH) staining was carried out, which revealed abundant coarse cytoplasmic granules that correspond to abundance of mitochondria [Figure 4].