A case of desmoplastic ameloblastoma in part of a cystic ameloblastoma of the mandible

• Published in: Japanese Journal of Oral and Maxillofacial Surgery Vol. 50; no. 8; pp. 479 - 482
• Main Authors: WATANABE, Yutaka, OKAZAKI, Yuichiro, HARAGUCHI, Takayuki, OZAWA, Yasuhiro, YAMANE, Gen-yuki, TANAKA, Youichi
• Format: Journal Article
• Language: English
• Published: Japanese Society of Oral and Maxillofacial Surgeons 2004
• Subjects: desmoplastic ameloblastoma; hybrid lesion; odontogerlic tumor
• ISSN: 0021-5163; 2186-1579
• DOI: 10.5794/jjoms.50.479

Desmoplastic ameloblastoma (DA) is classified as a variant of ameloblastoma. DA is a rare lesion and is histologically characterized by extensive stromal collagenization or desmoplasia. We describe our experience with a case of hybrid DA consisting of DA and plexiform ameloblastoma. The patient was a 52-year-old woman. Swelling was recognized from the mandibular right molar to the right ramus. A multilocular radiolucent area including an impacted tooth was present in the posterior part of the swelling and a radiopaque area with a honeycomb appearance was seen in the anterior part. After the diagnosis of DA, resection of the mandible and reconstruction with an iliac bone graft were performed. Histologically, the anterior lesion showed microscopic features of DA, and the posterior lesion showed those of plexiform ameloblastoma. We discussed DA and hybrid DA by comparing our case with previously reported cases. We conclude that the diagnosis and treatment of DA require careful consideration.