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KMID : 0357919840180020179
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Korean Journal of Pathology
1984 Volume.18 No. 2 p.179 ~ p.183
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Primary Squamous Cell Carcinoma of the Thyroid Gland -A repast of two cases-
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양기화/Ki Hwa Yang
이안희/김병기/김선무/Ahn Hee Lee/Byong Kee Kim/Sun Moo Kim
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Abstract
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Primary squamous cell carcinoma is a rare malignant tumor of the thyroid gland. It
was firstly described by von Karst in 1858. Although the histogenetic origin of
squamous cell carcinoma of the thyroid has been debated, squamous metaplasia of the
follicular cells is most widely accepted histogenetic theory for this neoplasm.
The authors experienced two cases of primary squamous cell carcinoma of the thyroid
gland. The first case was a 64 years old male Patient who tad been suffered due to
suddenly developed palpable mass on the anterior neck, two months prior to entry. On
operation, there was an ill defined nodular mass, 3㎝ in diameter, on the left lower
thyroid. It had homogeneous light fellow cut surface with firm consistency.
Microscopically, the thyroid follicles were replaced by dense fibrous tissue containing
nests of neoplastic squamous cell. There was marked chronic inflammatory cell
infiltration in the fibrous tissue.
The second case was a 52 years old male patient who tad been buffered because of
painful palpable mass on the anterior neck for 20 days. He had been showed hoarseness
since eight month prior to entry. Laryngoscopic examination revealed paralysis of the
right vocal cord, but other pathological findings were not found. On operation, the
thyroid gland was fixed to the trachea. Both lobes of the thyroid showed homologeneous
tan brown cut surface with focal honey-comb appearance and diffuse light yellow
miliary infiltration. Microscopically, there were numerous nests of neoplastic squamous
cells with keratin pearls. Benign metaplastic squamous cells were observed arround the
carcinoma lesion. Transitional cone between the metaplastic squamous cells and follicular
epithelial cells were observed. Some follicles were entrapped within the neoplastic tissue.
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