A Case of Ameloblastic Fibrodentinoma in Nasal Floor / 대한이비인후과학회지

Ameloblastic fibrodentinoma is an extremely rare benign tumor composed of odontogenic epithelium and stroma with dentin. It usually arises in the posterior mandible (maxilla-mandible ratio 1:3) and is commonly associated with the unerupted molar teeth of young adults, adolescents and children. It mainly affects people younger than 4th decades of age and is found more commonly in males than in females. Ameloblastic fibrodentinoma usually grows slowly without any symptoms, but sometimes it may grow rapidly. Radiographically, it shows well-delineated radiolucency, but it may be seen as a radiopaque mass in its mature stage. Ameloblastic fibrodentinoma of nasal floor is an extremely rare entity and no document in the literature was found. Recently, we experienced a case of ameloblastic fibrodentinoma of nasal floor which was confirmed by excisional biopsy. Thus, for the first time in Korea, we report a case of ameloblastic fibrodentinoma of the nasal floor with a review of literature.

A Case of Malignant Meningioma with Multiple Extracranial Metastasis

Meningioma is generally regarded as benign and extracranial metastasis of intracranial meningioma is rare. About 60 cases of distant metastasis of meningioma have now been reported. Angioblastic meningioma, although a rare type, shows rapid growth and sarcomatous change frequently, and has higher incidence of metastasis than other types of meningioma. The authors report a case of malignant angioblastic meningioma arisen in left olfactory groove with multiple metastasis to skeletal system. The available literature regarding these tumors is reviewed.