Calcium phosphate in aspergillosis of the maxillary sinus.
The unique appearance of apatite in fungus balls of aspergillosis in the maxillary sinus was investigated using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray microdiffraction and Fourier transform infrared spectroscopy (FT-IR). Rod-shaped fragments with tubular structures, and globular vesicles covered with conidia were observed in the fungus balls. Massive fragments of a solid substance were demonstrated inside the fungus balls. Calcium and phosphate were detected in necrotic areas of the fungus balls by EDS. X-ray microdiffraction and FT-IR showed the presence of an apatite-like substance, but failed to demonstrate the presence of calcium oxalate crystals usually found in such fungus balls.
Department of Oral Pathology, Nihon University School of Dentistry at Matsudo, Chiba, Japan.
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H
Tanaka
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Sakae
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Mishima
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Yamamoto
D001228:Aspergillosis / Q000378:metabolism* / Q000473:pathology; D002130:Calcium Phosphates / Q000032:analysis* / Q000378:metabolism; D005260:Female; D006801:Humans; D008443:Maxillary Sinus / Q000737:chemistry* / Q000378:metabolism / Q000473:pathology; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D012140:Respiratory Tract Diseases / Q000378:metabolism / Q000473:pathology; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
D002130:Calcium Phosphates; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C485838:calcium phosphate, monobasic, anhydrous; C020243:calcium phosphate; C485829:calcium phosphate, dibasic, anhydrous