A curious occipital polyp.
Muscles which lose their attachments are uncommon. During development this normally occurs in certain muscles, e.g. the muscles of the face and epicranius; these muscles lose their skeletal connections before migration. In the case presented here a muscle in the occipital region had lost its attachment and formed a peculiar swelling.
D002648:Child; D005260:Female; D006258:Head and Neck Neoplasms / Q000473:pathology*; D006801:Humans; D009132:Muscles / Q000002:abnormalities; D009379:Neoplasms, Muscle Tissue / Q000473:pathology; D011127:Polyps / Q000473:pathology*