Ewing’s sarcoma of the jaws: An institutional study of four cases

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Ewing’s sarcoma of the jaws: An institutional study of four cases Aadithya B. Urs, Priya Kumar, Garima Rawat, Sujata Mohanty International Journal of Pediatric Otorhinolaryngology Extra Volume 13, Pages 33-39 (September 2016) DOI: 10.1016/j.pedex.2016.03.005 Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 1 CT scan revealing ill defined osteolytic lesion within body and ramus of left mandible causing erosive destruction of overlying cortices and showing periosteal new bone formation giving a sun ray appearance (case #2). International Journal of Pediatric Otorhinolaryngology Extra 2016 13, 33-39DOI: (10.1016/j.pedex.2016.03.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 2 (A) Intraoral photograph showing bony hard swelling from 53 to 55 expanding buccal cortical plate and causing obliteration of buccal vestibule (case #3). (B) Intraoral photograph showing destructive bony hard swelling with erythematous surface from incisors to molar region displacing teeth (case #4). International Journal of Pediatric Otorhinolaryngology Extra 2016 13, 33-39DOI: (10.1016/j.pedex.2016.03.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 3 CT scan showing well-defined multilocular expansile lytic lesion from left canine to first molar with perforation of both the cortices and displacement of roots of premolars and molars (case #4). International Journal of Pediatric Otorhinolaryngology Extra 2016 13, 33-39DOI: (10.1016/j.pedex.2016.03.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 4 (A–C) Extraoral photographs showing exponential increase in the swelling in a short duration (10 days) (case #4). (D) Post treatment extraoral photograph (case #4). International Journal of Pediatric Otorhinolaryngology Extra 2016 13, 33-39DOI: (10.1016/j.pedex.2016.03.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 5 (A) Photomicrograph showing tumour mass composed of small, round cells with minimal cytoplasm and indiscernible cytoplasmic boundary (H&E 40×). (B) Photomicrograph showing tumour cells arranged in cords and strands. (H&E 10×). (C) Photomicrograph showing the presence of mitotic figures in round cells (arrow). (H&E 100×). (D) Photomicrograph showing an area of tumour cells undergoing necrosis (encircled area). (H&E 40×). (E, F) Photomicrographs showing membranous positivity for CD99 in round cells. International Journal of Pediatric Otorhinolaryngology Extra 2016 13, 33-39DOI: (10.1016/j.pedex.2016.03.005) Copyright © 2016 Elsevier Ltd Terms and Conditions