PMC10134172_01
Axial and coronal contrasted CT of the neck shows a well-defined hypodense cystic mass with peripheral and central enhancement arising from the right posterior cervical space measuring 2.0 cm (AP) x 1.4 cm (T) x 3.1 cm (CC) in size. CT findings are consistent with brachial cleft cyst.
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Histopathology of branchial cyst highlighting reactive lymphoid follicles resembling lymph node (upper arrows), mucinous glands (lower left arrow) as well as an area with papillary thyroid carcinoma (lower right arrow); H&E staining 40x original magnification (a); photomicroscopy of thyroid papillary carcinoma displaying characteristic cellular nuclear features characterized by atypia, enlargement, and overlapping with pseudo inclusion and ground glassy appearance; H&E staining 200x original magnification (b).
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The presence of reactive lymphoid follicles resembled lymph node and mucinous glands (Figure 2(a)). Additionally, an area with papillary thyroid carcinoma characterized by atypical cells that were enlarged, elongated and overlapping with pseudo inclusion and ground glassy appearance was evident (Figure 2(b)).