Show pageBacklinksCite current pageExport to PDFBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Perimesencephalic subarachnoid hemorrhage diagnosis ====== ===== Perimesencephalic subarachnoid hemorrhage diagnosis Latest PubMed related articles ===== {{rss>https://pubmed.ncbi.nlm.nih.gov/rss/search/1-ohVP9Y35P6jL32lRAHGeib61kI0v-H-RY_zxIuSuGtdXlgpY/?limit=15&utm_campaign=pubmed-2&fc=20230830024732}} ===== CT ===== [[Perimesencephalic]] [[subarachnoid hemorrhage]] has been defined as subarachnoid haemorrhage, which on [[CT]] within three days of [[symptom]] onset: It is centred anteriorly to the [[pons]] and [[midbrain]] May extend into the basal and [[suprasellar cistern]]s and into the proximal/basal Sylvian and [[interhemispheric fissure]]s may settle as sediment in the [[occipital horn]]s of the [[lateral ventricle]]s but there is no overt intraventricular haemorrhage ===== CTA ===== Is recommended for PMSAH to investigate for possible aneurysmal cause. Undertaking a DSA after a negative CTA may not add any further diagnostic value in patients with PMSAH and may lead to net harm. This observation needs to be validated in a large-scale prospective multicenter study with complete case ascertainment and robust data on CTA and DSA complications ((Mohan M, Islim A, Dulhanty L, Parry-Jones A, Patel H. CT angiogram negative perimesencephalic subarachnoid hemorrhage: is a subsequent DSA necessary? A systematic review. J Neurointerv Surg. 2019 Dec;11(12):1216-1221. doi: 10.1136/neurintsurg-2019-015051. Epub 2019 Jul 4. PMID: 31273072.)) ===== Cerebral angiography ===== [[Perimesencephalic subarachnoid hemorrhage cerebral angiography]] perimesencephalic_subarachnoid_hemorrhage_diagnosis.txt Last modified: 2024/06/07 02:55by 127.0.0.1