上唇に発生した血管内乳頭状内皮過形成の1例

• Published in: 日本口腔外科学会雑誌 Vol. 67; no. 3; pp. 212 - 217
• Main Authors: 丸尾, 将太, 堀, 信介, 山田, 順子, 園部, 純也
• Format: Journal Article
• Language: Japanese
• Published: 社団法人 日本口腔外科学会 20.03.2021
• Subjects: 上唇; 外傷; 血管内乳頭状内皮過形成
• ISSN: 0021-5163; 2186-1579
• DOI: 10.5794/jjoms.67.212

This report describes a case of intravascular papillary endothelial hyperplasia (IPEH) arising in the upper lip.　A 7-year-old girl was referred to our department because of painless swelling of the upper lip in October 2015. She had suffered a bruise on her upper lip 4 months before consultation. Physical examination revealed an elastic hard submucosal mass, measuring 20 × 10 mm, on the left side of the upper lip. Magnetic resonance imaging (MRI) indicated a well-defined neoplastic lesion. The lesion was clinically diagnosed as a benign tumor and was surgically removed under general anesthesia. The histopathological diagnosis of the excised specimen was IPEH (pure form).　IPEH is very difficult to clinically diagnose, since it shows various clinical findings. In previous reports, there are some cases in which IPEH was confirmed by surgical resection with a clinical diagnosis of hemangioma. It has been pointed out that its occurrence mechanism is related to a history of trauma, and it was the same in our case.　IPEH (pure form) rarely recurs after complete resection. In our case, four years have passed since the operation and there is no sign of recurrence.