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はじめに
家族性副甲状腺機能亢進症の多くは多発性内分泌腫瘍症(multiple endocrine neoplasia:MEN)が原因とされている1)。MEN以外の家族性副甲状腺機能亢進症の1つに,hyperparathyroidism-jaw tumor syndrome(HPT-JT)がある2)。今回,その典型的な所見である臨床所見,遺伝子の病的variantが揃ったHPT-JT症例を経験したため報告する。
A 26-year-old woman visited our hospital to undergo an evaluation for primary hyperparathyroidism(PHPT). She had undergone surgery for a mandibular tumor three years prior. Her blood calcium level and intact parathyroid hormone(PTH)levels were high, and computed tomography revealed swelling of the upper parathyroid on her left side. She underwent surgery for the parathyroid tumor, and subsequently, her blood calcium level and intact parathyroid hormone level became normal. Genetic analysis revealed a CDC73 mutation. Based on the PHPT, mandibular tumor, and genetic analysis, she was diagnosed with hyperparathyroidism-jaw tumor syndrome(HPT-JT).
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