{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T12:57:23Z","timestamp":1785761843674,"version":"3.56.0"},"reference-count":16,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2018,12,1]],"date-time":"2018-12-01T00:00:00Z","timestamp":1543622400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Craniomaxillofacial Trauma &amp; Reconstruction"],"published-print":{"date-parts":[[2018,12]]},"abstract":"<jats:p> The authors report the surgical treatment of an extensive right frontal sinus osteoma assisted by neuronavigation and reconstruction by a hydroxyapatite custom-made implant. The patient presents with ptosis, hypoglobus, and proptosis of the right eye, without any visual impairment. Computed tomographic (CT) scan showed a very large bony mass involving right frontal sinus and displacing the orbital roof. A stereolithographic model\u2013guided planning was carried out to obtain a practical simulation of the surgical operation and it was submitted to a new CT scan to acquire the reference point to realize the neuronavigation assistance, and to achieve the template to realize the hydroxyapatite custom-made implant. Intraoperatively, with the help of neuronavigation assistance, osteotomies were performed by piezoelectric device. The reconstruction was made using a hydroxyapatite custom-made implant. The procedure was damage free, the bony mass was excised, and the orbital roof was repaired without any adverse effects. Postsurgical CT scan and scintigraphy showed a good reconstruction and a good-quality osteoblasts activity on the borders of the implant. Osteoma is a benign slow-growing bone tumor, usually involving the frontal sinus. Navigational assistance offers a very important help to perform safe osteotomies. Hydroxyapatite custom-made implant seems to be an excellent reconstructive method. <\/jats:p>","DOI":"10.1055\/s-0037-1607066","type":"journal-article","created":{"date-parts":[[2017,11,9]],"date-time":"2017-11-09T10:53:39Z","timestamp":1510224819000},"page":"305-313","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":7,"title":["Removal of a Frontal Sinus Osteoma and Reconstruction by a Custom-Made Implant with Neuronavigation Assistance"],"prefix":"10.3390","volume":"11","author":[{"given":"Vincenzo","family":"Palazzolo","sequence":"first","affiliation":[{"name":"Department of Maxillofacial Surgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anita","family":"Tronchet","sequence":"additional","affiliation":[{"name":"Department of Maxillofacial Surgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Valsecchi","sequence":"additional","affiliation":[{"name":"Department of Maxillofacial Surgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvio","family":"Bellocchi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlo","family":"Gervasoni","sequence":"additional","affiliation":[{"name":"Department of Maxillofacial Surgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Spotti","sequence":"additional","affiliation":[{"name":"Department of Maxillofacial Surgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrea Di","family":"Francesco","sequence":"additional","affiliation":[{"name":"Department of Maxillofacial Surgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luigi","family":"Colombo","sequence":"additional","affiliation":[{"name":"Department of Maxillofacial Surgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Riccio","sequence":"additional","affiliation":[{"name":"Department of Maxillofacial Surgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paolo","family":"Ronchi","sequence":"additional","affiliation":[{"name":"Department of Maxillofacial Surgery, Sant'Anna Hospital, San Fermo Della Battaglia, Como, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2018,12,1]]},"reference":[{"key":"bibr1-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1016\/j.diii.2012.05.005"},{"key":"bibr2-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1097\/SCS.0000000000003164"},{"key":"bibr3-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1007\/s12105-007-0023-4"},{"key":"bibr4-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcms.2013.04.001"},{"key":"bibr5-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1067\/mpa.2000.103869"},{"key":"bibr6-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.4103\/0970-0358.121982"},{"key":"bibr7-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1080\/02688690020005581"},{"issue":"06","key":"bibr8-s-0037-1607066","first-page":"431","volume":"33","author":"Sanchez Burgos R","year":"2013","journal-title":"Acta Otorhinolaryngol Ital"},{"key":"bibr9-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.22203\/eCM.v027a07"},{"key":"bibr10-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1288\/00005537-198606000-00002"},{"key":"bibr11-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1016\/j.joms.2010.05.034"},{"key":"bibr12-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1007\/s00701-009-0374-6"},{"key":"bibr13-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1097\/PRS.0b013e318244220d"},{"key":"bibr14-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcms.2012.11.005"},{"key":"bibr15-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcms.2011.04.014"},{"key":"bibr16-s-0037-1607066","doi-asserted-by":"publisher","DOI":"10.1007\/s00701-006-1078-9"}],"container-title":["Craniomaxillofacial Trauma &amp; 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