Hérnia de disco cervical gigante: relato de caso

disc herniation occurs commonly in neurosurgery. the neurosurgery department of santa casa de belo horizonte in 1997 had 17% of all surgeries for disc herniation and 7% of those were of cervical spine. we report a giant cervical disc herniation c4-c5 in a 72-year-old male patient, presenting with tetraparesis, sensory loss below c5 and urinary retention, who underwent microsurgical anterior decompression and internal fixation with iliac bone graft without plate fixation according cloward. the patient had a satisfactory outcome. we propose a new classification for disc herniation according the dural compression: small (until 12%), medium (12 to 25%), big (25 to 50%) and giant (more than 50%).