The occipital emissary channel and increased intracranial pressure.
D000328:Adult; D001932:Brain Neoplasms / Q000000981:diagnostic imaging*; D002648:Child; D003392:Cranial Sinuses / Q000000981:diagnostic imaging*; D003884:Dermoid Cyst / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007427:Intracranial Pressure; D009083:Mucopolysaccharidoses / Q000000981:diagnostic imaging*; D009777:Occipital Bone / Q000000981:diagnostic imaging*; D011859:Radiography