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Functioning Parathyroid Carcinoma -A case report-
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KMID : 0357919960300020169
Abstract
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Parathyroid carcinoma is a relatively rare endocrine tumor, accounting for
approximately 1 to 5% of patients with primary hyperparathyroidism. Patients with
parathyroid carcinomas are often symptomatic, have markedly elevated calcium levels,
and have a palpable cervical mass. They are equally distributed between the sexes and
usually present 10 years before their benign counterparts. The diagnosis is suspected
when the tumor is large, parathyroid hormone levels are high, and a palpable mass is
present in the neck. Parathyroid carcinoma is often misdiagnosed preoperatively,
suspected intraoperatively, and only confirmed postoperatively.
We experienced a case of hyperfunctioning parathyroid carcinoma in a 36 year old
man, which was confirmed microscopically. The tumor showed: 1) capsular and blood
vessel invasion; 2) frequent mitotic figures in the parenchymal cells; 3) a trabecular
pattern, and 4) intervening thick fibrous bands.
Immunohistochemical stain of p53 may be one of the useful methods in identifying
malignancy of parathyroid gland.
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Hyperparathyroidism; Functioning parathyroid carcinoma; Hypercalcemia@;
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