subdural hygroma radiology

Published on 21.04.2013 (PMID: [4] The right frontal meningioma with mild vasogenic edema is also unchanged. Neurosurgery 8(5):542-50. A prerequisite for dating by this method is knowledge of the exact time of onset, which is frequently absent in routine clinical practice. The demographics will depend on the underlying cause which includes: 1. idiopathic: in pediatric patients 2. trauma 3. post surgical, e.g. Subdural hematomas are seen in all age-groups although etiology will vary 4,5: 1. infants: non-accidental injury 2. young adults: motor vehicle accidents 3. elderly: falls (although a definite history of trauma may be lacking) They are present in ~15% (range 10-20%) of all head trauma cases and occur in up to 30% of fatal injuries. TSHy are early lesions and can be detected in the first 24 hours after trauma, usually as small subdural effusion (SSEff). (PMID: [5] The subdural fluid collections enhance, in keeping with subdural effusions(blue arrows).Axial T1WI: There is evidence of bilateral subdural fluid collections(white asterisk), slightly hyperintese compared to CSF (red asterisk), which could be attributed to high protein content.Solomou E, Department of Radiology, University Hospital of Patras, Patras, GreeceAxial T2WI: The bilateral subdural fluid collections (black asterisks), are of high signal and isointense to CSF (red asterisk).Solomou E, Department of Radiology, University Hospital of Patras, Patras, GreeceAxial T1WI+Gad: There is diffuse pachymeningeal enhancement (green arrows), more pronounced around the falx cerebri (orange arrows).Solomou E, Department of Radiology, University Hospital of Patras, Patras, GreeceAxial image. MR imaging, with its unique ability to delineate the various phases of hemorrhage, is well suited to the evaluation of subdural hemorrhage. A midline sagittal incision with a “T-bar” extension was described by Ludwig G. Kempe for hemispherectomy.Clinically, growing skull fractures are appreciated as cranial asymmetry or a slowly growing lesion within the injury site. Subdural Hygroma. Imaging studies should be used liberally and any decline in the neurologic function or elevation of intracranial pressure should be investigated and treated aggressively.The incidence of seizure is relatively uncommon in patients with lateral ventricular meningiomas. (2013) Back to the scanner: expected and unexpected imaging findings following spinal puncture and access. Rev Neurol 56(5):283-8. (2011) Spontaneous acute subdural hematoma as the initial manifestation of chronic myeloid leukemia. Although this explanation has the benefit of simplicity, it does not necessarily represent a true description of the underlying mechanisms. Subdural hygromas are encountered in all age-groups but are overall most common in the elderly The vast majority of patients are asymptomatic. After the administration of gadolinium there was pachymeningeal enhancement (Figure 1c).

The pachymeningeal enhancement is more pronounced around the falx cerebri (orange arrows). The subdural fluid collections enhance, in keeping with subdural effusions(blue arrows).Solomou E, Department of Radiology, University Hospital of Patras, Patras, Greece It has been proposed that subdural hygromas, at least sometimes, represent prominent subdural effusions in which there is a separation of the dural border cell layer with an accumulation of fluid Subdural hygromas generally occur along the supratentorial cerebral convexities; occurrence in the posterior fossa is rare A subdural hygroma radiographically appears as a crescentic near-CSF density/signal accumulation in the subdural space that does not extend into the sulci and rarely exerts significant mass-effect The vast majority of patients with subdural hygroma are asymptomatic without radiographic evidence of mass-effect, and thus neurosurgical intervention is rarely required {"url":"/signup-modal-props.json?lang=us\u0026email="}{"containerId":"expandableQuestionsContainer","displayRelatedArticles":true,"displayNextQuestion":true,"displaySkipQuestion":true,"articleId":18609,"mcqUrl":"https://radiopaedia.org/articles/subdural-hygroma/questions/1540?lang=us"}ADVERTISEMENT: Radiopaedia is free thanks to our supporters and advertisers.