A case of rhinolithiasis in Botswana: a mineralogical, microscopic and chemical study
| Autor: | Bernard Vink, Richard Wormald, Piet van Hasselt |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Calcium Phosphates
medicine.medical_specialty Rhinolith Iron oxide Analytical chemistry Nose engineering.material Calcium stearate Calculi law.invention chemistry.chemical_compound X-Ray Diffraction law Nose Diseases Humans Medicine Deposition (law) Aged Aged 80 and over Minerals Thin layers business.industry General Medicine Foreign Bodies medicine.disease Amorphous solid Surgery Microscopy Electron Otorhinolaryngology chemistry Whitlockite engineering Female Nasal Obstruction Electron microscope business Stearic Acids |
| Zdroj: | The Journal of Laryngology & Otology. 116:1036-1040 |
| ISSN: | 1748-5460 0022-2151 |
| DOI: | 10.1258/002221502761698793 |
| Popis: | A case of rhinolithiasis in Southeast Botswana was treated and after removal in hospital, the rhinolith was subjected to macroscopic and microscopic examination, X-ray diffraction analysis, electron microscope analysis and partial botanical analysis.The rhinolith consists of a strongly elliptical core of calcium stearate (C36H70CaO4.H2O), surrounded by approximately 30 elongated concentric growth rings, consisting of sodium-containing whitlockite (Ca18Mg2(Na,H)(PO4)14). The different layers have various degrees of porosity and red staining, probably due to traces of amorphous iron oxide. The origin of the rhinolith started with a piece of plant material, lodged in the nose, which was replaced by calcium stearate, leaving some remnants of resistant epidermal plant tissue. During subsequent years, thin layers of whitlockite were deposited periodically around the core with the reddish brown bands representingdeposition during the dry season when atmospheric dust rich in amorphous iron oxide is at its highest in Botswana. |
| Databáze: | OpenAIRE |
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