{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T00:46:14Z","timestamp":1790297174806,"version":"4.1.0"},"reference-count":14,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2016,2,4]],"date-time":"2016-02-04T00:00:00Z","timestamp":1454544000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Otolaryngology"],"published-print":{"date-parts":[[2016,4]]},"abstract":"Objective<\/jats:title>We evaluated the accuracy, positive predictive value (PPV<\/jats:styled-content>), negative predictive value (NPV<\/jats:styled-content>), specificity and sensitivity of eight anatomic landmarks to differentiate parotid deep lobe tumours from superficial lobe tumours: the lateral margin of the retromandibular vein (RMV<\/jats:styled-content>), a straight line from the facial nerve trunk (FN<\/jats:styled-content> trunk) to the mandibular ramus (FN<\/jats:styled-content> line), a straight line from the FN<\/jats:styled-content> trunk to the RMV<\/jats:styled-content> (tRMV<\/jats:styled-content>), a straight line from the FN<\/jats:styled-content> trunk to the lateral margin of the masseter (tM<\/jats:styled-content>asseter), a straight line from the ipsilateral vertebral posterior end to the RMV<\/jats:styled-content> (U\u2010line), an arc with a radius of 8.5\u00a0mm centred on the mandibular ramus (Conn's arc), a straight line from the lateral surface of the masseter muscle to the lateral margin of the RMV<\/jats:styled-content> (rM<\/jats:styled-content>asseter) and an angle from the FN<\/jats:styled-content> line, tumour and the lateral margin of the masseter muscle (FTM<\/jats:styled-content> angle).<\/jats:p><\/jats:sec>Methods<\/jats:title>A total of 181 patients with a parotid gland tumour who underwent parotidectomy at a tertiary hospital were identified retrospectively from May 2005 to May 2013. Pre\u2010operative computed tomography and intraoperative findings were compared to evaluate each landmark.<\/jats:p><\/jats:sec>Results<\/jats:title>rM<\/jats:styled-content>asseter (accuracy: 85.5%, PPV<\/jats:styled-content>: 90.0%, NPV<\/jats:styled-content>: 85.12%, specificity: 98.1%, sensitivity: 22.2%) and tM<\/jats:styled-content>asseter (accuracy: 86.3%, PPV<\/jats:styled-content>: 80.0%, NPV<\/jats:styled-content>: 87.1%, specificity: 97.1%, sensitivity: 44.4%) showed superior results as diagnostic criteria.<\/jats:p><\/jats:sec>Conclusion<\/jats:title>rM<\/jats:styled-content>asseter and tM<\/jats:styled-content>asseter were useful as anatomic landmarks to differentiate a parotid deep lobe tumour from a superficial lobe tumour.<\/jats:p><\/jats:sec>","DOI":"10.1111\/coa.12491","type":"journal-article","created":{"date-parts":[[2015,6,28]],"date-time":"2015-06-28T10:19:30Z","timestamp":1435486770000},"page":"154-159","source":"Crossref","is-referenced-by-count":18,"title":["Effectiveness of anatomic criteria for predicting parotid tumour location"],"prefix":"10.1111","volume":"41","author":[{"given":"J.Y.","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Chonnam National University Medical School and Chonnam National University Hospital Gwangju South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.C.","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Chonnam National University Medical School and Chonnam National University Hospital Gwangju South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Chonnam National University Medical School and Chonnam National University Hospital Gwangju South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.C.","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Chonnam National University Medical School and Chonnam National University Hospital Gwangju South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D.J.","family":"Shin","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology\u2010Head and Neck Surgery Chonnam National University Medical School and Chonnam National University Hospital Gwangju South 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