上唇部に発生した血管筋腫の1例

概要

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Angiomyoma is a solitary and benign tumor. The majority of angiomyoma occurs in subcutaneous tissue of the lower extremities and in middle aged females. This type of tumor in the oral region is less common.<BR>The patient, a 43 year old male whose chief complaint was a painless mass in the right side of upper lip, visited our hospital. The tumor gradually developed in 6 years and then became an oval mass measuring about 20×15×10 mm. Histopathologically, the surgically extirpated tumor tisssue was encapsulated with connective tissue, and consisted of compressed and small vessels surrounded by proliferation of smooth muscle cells. Actin fibers were immunohistochemically found in the tumor cells. Electron microscopic examination confirmed that the tumor was smooth muscle cells in origin. The histopathological diagnosis was angiomyoma.
社団法人日本口腔外科学会の論文