case_images: PMC4860923_01
case_images: Extraorally, a swelling was noticed on the left side of face
case_images: JOMFP-20-162b-g001.jpg
case_images: PMC4860923_01_JOMFP-20-162b-g001.jpg
case_images: F1
case_images: A 22-year-old female came with the chief complaint of swelling over the left front side of the face since 4 months [Figure 1].
case_images: Intraorally, the swelling was seen involving the left canine and extending up to the second premolar
case_images: JOMFP-20-162b-g002.jpg
case_images: PMC4860923_01_JOMFP-20-162b-g002.jpg
case_images: F2
case_images: Intraorally, the swelling appeared to be arising from the labial vestibule extending up to the second premolar of the left side [Figure 2].
case_images: Radiograph showing well-defined radiolucency and resorption of teeth
case_images: JOMFP-20-162b-g003.jpg
case_images: PMC4860923_01_JOMFP-20-162b-g003.jpg
case_images: F3
case_images: The orthopantomography revealed unilocular radiolucency associated with 11, 12, 21, 22, 24 and root resorption in relation to 21, 22, 24 with missing 23 [Figure 3].
case_images: Photomicrograph showing the spindle cells arranged in herringbone pattern (H&E stain, x40)
case_images: JOMFP-20-162b-g004.jpg
case_images: PMC4860923_01_JOMFP-20-162b-g004.jpg
case_images: F4
case_images: The cells were arranged in fascicular pattern with few areas showing herringbone pattern of arrangement [Figure 4].
case_images: Lesional cells showing positivity for vimentin (IHC stain, x200)
case_images: JOMFP-20-162b-g005.jpg
case_images: PMC4860923_01_JOMFP-20-162b-g005.jpg
case_images: F5
case_images: The cells showed immunoreactivity for vimentin [Figure 5].
case_images: Few areas showing round cells (H& E stain, x400)
case_images: JOMFP-20-162b-g006.jpg
case_images: PMC4860923_01_JOMFP-20-162b-g006.jpg
case_images: F6
case_images: There were few areas showing round cells [Figure 6].
case_images: The lesional cells were separated from the overlying epithelium by a zone of connective tissue (H&E stain, x40)
case_images: JOMFP-20-162b-g007.jpg
case_images: PMC4860923_01_JOMFP-20-162b-g007.jpg
case_images: F7
case_images: Under low power the lesional cells were separated from the overlying epithelium by a zone of connective tissue. [Figure 7].
case_images: Dysplastic spindle cells arranged in herringbone pattern (H&E stain, x200)
case_images: JOMFP-20-162b-g008.jpg
case_images: PMC4860923_01_JOMFP-20-162b-g008.jpg
case_images: F8
case_images: Under high power the typical herring bone pattern was seen [Figure 8].