title: Giant, completely thrombosed intracranial aneurysm simulating tumor of the foramen magnum.
mesh_terms: D003937:Diagnosis, Differential; D005539:Foramen Magnum; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications / Q000000981:diagnostic imaging*; D002542:Intracranial Embolism and Thrombosis / Q000150:complications / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D012888:Skull Neoplasms / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed