PMC4065440_01
Clinical image showing swelling in the neck
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F1
The mass was just anterior and deep to the sternocleidomastoid muscle [Figure 1].
Gross specimen of the excised lesion
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F2
The specimen showed mucoid material within the cystic cavity, the cyst wall was very thick with papillary projections [Figure 2].
Photomicrograph showing cystic lesion lined by stratified squamous epithelium. (H&E stain, x40)
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F3
The epithelium was stratified squamous epithelium type and was 6-8 cells layered thick [Figure 3].
Photomicrograph showing cystic cavity lined by thin stratified squamous epithelium with the underlying connective tissue showing abundant lymphoid tissue aggregate (H&E stain, x40)
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F4
Some fibrous connective tissue elements with fibroblasts and blood vessels lined by endothelial cells were evident. [Figures 4-6].
Photomicrograph showing the germinal center within the lymphoid aggregate (H&E stain, x100)
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F5
Some fibrous connective tissue elements with fibroblasts and blood vessels lined by endothelial cells were evident. [Figures 4-6].
Photomicrograph showing cystic lumen lined by thin stratified squamous epithelium with flat rete ridges and underlying connective tissue showing abundant lymphoid tissue aggregate (H&E stain, x100).
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F6
Some fibrous connective tissue elements with fibroblasts and blood vessels lined by endothelial cells were evident. [Figures 4-6].