{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T08:09:09Z","timestamp":1782893349398,"version":"3.54.5"},"reference-count":12,"publisher":"BMJ","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Reports"],"accepted":{"date-parts":[[2017,5,17]]},"abstract":"<jats:p>A 44-year-old man presented with swelling in the left parotid region. The swelling was firm and Fine Needle Aspiration Cytology report proved pleomorphic adenoma. In the CT scan, the tumour was confined to the superficial lobe of parotid. So, left superficial parotidectomy was planned. Modified Wilson Blair\u2019s incision was used. On course of identifying the facial nerve, a large calibre vein was identified running vertically through the parotid substance. Assuming it as retromandibular vein, further dissection was carried out more meticulously. Marginal mandibularbranch of facial nerve was identified near the angle of mandible and retrograde dissection showed the cervicofacial division running medial to retromandibular vein with the main facial nerve trunk lying unusually medial and posterior to it. Adding to it, the temporofacial division was found \u2018forked\u2019 between the branches of retromandibular vein. These variations in head and neck venous channels are not that rare as we believe. All these variations have an embryological basis. Therefore, knowledge and understanding of this complex anatomy will help us preventing devastating complications like bleeding and facial nerve injury in such cases.<\/jats:p>","DOI":"10.1136\/bcr-2017-219562","type":"journal-article","created":{"date-parts":[[2017,6,3]],"date-time":"2017-06-03T09:55:12Z","timestamp":1496483712000},"page":"bcr-2017-219562","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["An unusual position of retromandibular vein: a surgical challenge in parotid surgeries"],"prefix":"10.1136","volume":"2017","author":[{"given":"Prasanna Kumar","family":"Saravanam","sequence":"first","affiliation":[{"name":"Department of ENT, Head and Neck Surgery, Sri Ramachandra University Medical College, Chennai, Tamil Nadu, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vinoth","family":"Manimaran","sequence":"additional","affiliation":[{"name":"Department of ENT, Head and Neck Surgery, Sri Ramachandra University Medical College, Chennai, Tamil Nadu, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2017,6,3]]},"reference":[{"key":"2025082622543828000_2017.jun03_1.bcr-2017-219562.1","unstructured":"Blair VP . Surgery and diseases of the mouth and jaws; a practical treatise on the surgery and diseases of the mouth and allied structures. 1st edn. 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