PMC6585229_01
(a) Worm's-eye view, (b) Profile view
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F1
Another swelling was present on the right side at the lower border of the mandible extending from the region up to the ear lobe and measuring 6 cm x 2 cm at its greatest dimension, was elliptical in shape, and had a smooth surface [Figure 1].
(a) Section showing diffuse infiltration by tumor nests, cords, and singly scattered neoplastic cells (H and E, x100), (b) showing cells with high N:C ratio, nucleohypochromasia, deep eosinophilic to vacuolated cytoplasm. Few pseudoglandular spaces and mitotic figures seen. (c) Showing diffusely scattered and small cluster of neoplastic polyhedral cells having high N:C ratio and pale blue cytoplasm (MGG, x400). (d) Strong membranous and cytoplasmic positivity with monoclonal carcinoembryonic antigen (IHC, x400)
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F2
Cells had high nucleus: cytoplasm ratio, pleomorphism, and hyperchromasia [Figure 2].
Contrast-enhanced computed tomography of head and neck at the level of parotid gland shows ill-defined hypodense mass lesion involving both superficial and deep lobes of the left parotid gland
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F3
A permeative lytic lesion was noted in the mandible, and the soft-tissue component was seen along the intraoral and gingivobuccal aspect of mandible, predominantly on the right side [Figure 3].