<prompt> One of the following is a midline neck swellingCarotid body tumorThyroglossal cystBranchial cystCystic hygroma  <response>: Midline swelling of the neck from above downwards Ludwigs angina Enlarged submental lymph nodes Sublingual dermoid Lipoma in the submental region Thyroglossal cyst Subhyoid bursitis Goitre Lipoma enlarged lymph nodes in the suprasternal space of burns Retrosternal goitre Thymic swelling A dermoid cyst may occur anywhere in the midline Ref : Bailey Love 25e p729 