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In the paranasal sinuses, especially in the frontal sinus, they have occasionally been mentioned in the literature.<\/jats:p><jats:p>Disordered ventilation and impaired drainage are decisive pathogenic factors in the causation of cholesterol granuloma. Views remain divided on the source of the cholesterol and on the importance of bleeding in the development of cholesterol granuloma. Two patients with a cholesterol granuloma of the frontal sinus are presented and discussed.<\/jats:p>","DOI":"10.1017\/s0022215100110059","type":"journal-article","created":{"date-parts":[[2007,11,30]],"date-time":"2007-11-30T10:20:55Z","timestamp":1196418055000},"page":"776-779","source":"Crossref","is-referenced-by-count":20,"title":["Cholesterol granuloma of the paranasal sinuses"],"prefix":"10.1017","volume":"103","author":[{"given":"S.","family":"B\u00fctler","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R.","family":"Grossenbacher","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2007,6,29]]},"reference":[{"key":"S0022215100110059_ref025","doi-asserted-by":"publisher","DOI":"10.3109\/00016488609108630"},{"key":"S0022215100110059_ref021","doi-asserted-by":"publisher","DOI":"10.3950\/jibiinkoka.83.1586"},{"key":"S0022215100110059_ref019","doi-asserted-by":"publisher","DOI":"10.1016\/0266-4356(86)90096-3"},{"key":"S0022215100110059_ref022","doi-asserted-by":"publisher","DOI":"10.1016\/S0165-5876(86)80031-3"},{"key":"S0022215100110059_ref026","doi-asserted-by":"publisher","DOI":"10.3109\/00016488009127133"},{"key":"S0022215100110059_ref009","first-page":"23","volume-title":"Pathology of granulomas and neoplasms of the nose and paranasal sinuses","author":"Friedmann","year":"1982"},{"key":"S0022215100110059_ref010","doi-asserted-by":"publisher","DOI":"10.1288\/00005537-198506000-00005"},{"key":"S0022215100110059_ref027","first-page":"203","article-title":"Cholesterol in cholesteatoma and in the otitis media syndrome","volume":"3","author":"Sad\u00e9","year":"1982","journal-title":"American Journal of Otology"},{"key":"S0022215100110059_ref028","first-page":"1926","article-title":"Electron microscopic studies on the origin of cholesterine crystal in the cholesterine granuloma (in human ears)","volume":"70","author":"Sakamoto","year":"1967","journal-title":"Journal of the Oto-Rhino-Laryngological Society of Japan (Tokyo)"},{"key":"S0022215100110059_ref024","first-page":"1","article-title":"Pneumatization of the bone and environmental factors; 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