乳児の硬口蓋に存在した平滑筋腫性過誤腫の1例

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  • A case of leiomyomatous hamartoma in the hard palate of an infant
  • ニュウジ ノ コウコウガイ ニ ソンザイ シタ ヘイカツ キンシュセイ カゴ シュ ノ 1レイ

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<p>Leiomyomatous hamartoma mainly occurs in the liver, spleen, kidney and lung. It is rarely found in the oral region.</p><p>　We report a case of leiomyomatous hamartoma arising in the hard palate of a 6-month-old female infant. Six months after her birth, her parents consulted the obstetrician about a tumor of the hard plate and were referred to our department. Although it had been recognized since her birth, she could suck milk without any problems. The results of medical examination revealed that there was no problem in general condition. The tumor was an elastic soft, and cord-like mass that measured about 15 × 3 mm and was localized in the incisive papilla. The primary clinical diagnosis was a benign tumor of the hard palate. An excisional biopsy was carried out in the outpatient clinic by using local anesthesia. Immunohistochemical analysis showed positive reactions for α-smooth muscle actin (α- SMA) and HHF35, which showed the growth of smooth muscle. A histological diagnosis of leiomyomatous hamartoma was established. Postoperative observation has revealed no recurrence as of 13 years after the operation.</p>

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