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Abstract

口腔領域の悪性血管内皮腫は,ほとんどの場合,X線検査のみによって,診断や術後観察が行われてきたといえる。われわれは,本腫瘍の術後観察を,RIアンギオグラフィーと骨シンチグラフィーで行い,X線所見と比較検討した。得られたRIアンギオグラムは,下顎骨正中部における血流量の減少を示し,骨シンチグラムは同部の骨欠損像を示した。これらの所見から,本腫瘍の診断や術後観察に,RIアンギオグラフィーや骨シンチグラフィーは,極めて有用であろうと考えられた。A case of malignant hemangioendothelioma is presented in which the postoperative observation was carried out by means of radionuclide angiography and bone scintigraphy with 99m-Tc labeled methylene diphosphonate. In addition, these two modalities were compared with conventional dental radiography. The angiographic images obtained as a serial scintigrams from the first pass revealed an extremely decreased bone blood flow in the incisor region of the mandible, in which the radiographic images could not be contrasted without contrast media. The static scan bone images showed a well defined bone defect corresponding to the angiographic images and radiographic images. All findings obtained using these modalities showed that radionuclide angiography and bone scintigraphy were useful in following up the postoperative progress of malignant hemangioendothelioma