PMC7201451_01
Cervical axial CT scan with contrast. Complex cystic mass in the right parasagittal anterior colli area, appears to bulge to the level of the larynx.
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To obtain a more accurate picture, a CT scan with contrast for the neck area was performed, which then showed a complex cystic mass in the front neck area located in the right parasagittal area, sized approximately 3.9 x 3.8 x 5.5 cm, attached to the right infrahyoid muscle, appearing to bulge into the larynx, with differential diagnosis of the thyroglossal duct cyst or epidermoid cyst (Figure 1).
(a) Unopened excised specimen; (b) opened excised specimen.
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Macroscopic appearance of the specimen showed a cystic lesion that measured 4 x 3 x 3 cm with part of the specimen resembling white cauliflower and appeared to be fragile (Figure 2).
(a) Duct with a dense connective tissue wall lined with a layer of thorax epithelium that appears to be erosive (HE 40x); (b) tumor tissue with a papillary structure with a fibrovascular stalk (HE 100x); (c) tumor cells with an irregular nucleus with "ground glass nuclei" (blue arrow) and "nuclear grooves" (red arrow) (HE 400x).
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Other areas showed that there were tumors in papillary structures with a fibrovascular stalk and some in a follicular pattern, lined by cells that were stratified, and showing ground glass nuclei, nuclear grooves, and eosinophilic cytoplasm (Figure 3).