For different authors subdural hygroma is more prevalent in older patients with some degree of cerebral atrophy 4,9,14,19. 33,42,43,57 ⇓ ⇓ –60 Unfortunately, the causes of SDHys cannot always be read directly from the CT or MR images. Key Words: Magnetic resonance imaging․Subdural hygroma․Atrophy․Subarachnoid space․Diagnosis INTRODUCTION Extracerebral or pericerebral fluid collection includes subdural hygroma17,25,26), subdural effusion10,12,18), enlargement of the subara- Subdural hematoma and hygroma are rare complications of spinal anesthesia. Post-traumatic subdural hygroma it is an intracranial lesion, commonly misdiagnosed due to its unclear symptomatology and slow progression. Conclusion: The cortical vein sign is not useful to differentiate subdural hygroma and atrophy. Among neurotraumatologists it is generally known that SDHys usually derive from head injuries and represent rare posttraumatic complications that may coexist with epidural or subdural hematomas. They accumulate in the subdural space around the convexity of the brain – normally a … At surgery, clear fluid under pressure was found. Cerebral cortical atrophy: In atrophy, subarachnoid space is widened, the cortical veins traversing widened CSF spaces over cerebral convexities favours atrophy best seen on post contrast T1 MRI. Cat and dog models suggest that, once the dura and arachnoid separate, fibrin, from either serum or exudates, can induce proliferation of granulation tissue on the inner dural surface [ 19 ]. Acute CSF subdural hygromas had signal intensities identical to CSF without MR evidence of blood products. What symptoms a person has with a general hygroma … Chronic subdural hematoma: the closest differential which is usually unilateral and asymmetrical if bilateral. However, they should be considered in patients after spinal anesthesia with continuing orthostatic headache, especially if contributing factors are present, such as a ventriculo-peritoneal shunt or brain atrophy … Objective: Brain atrophy and subdural hygroma were well known factors that enlarge the subdural space, which induced formation of chronic subdural hematoma (CSDH). Patients with brain atrophy and repeated subdural hemorrhages can develop subdural hygromas. Symptoms. Subdural Hygroma in Infants. Approximately one-third of patients with CSDH have a history of minor trauma, and risk factors other than brain atrophy and subdural hygroma are old age, chronic alcohol addiction, blood coagulation disorders, anticoagulant use, and epilepsy. The Pathogenesis of Subdural Hygromas: An Ongoing Odyssey. Cerebral atrophy enables minor stress or trauma to provoke separation of the dura–arachnoid interface, as is also seen with subdural hygroma . 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