A retrospective study of 28 1 cases of traumatic posterior fossa Extra dural hematoma 2,3 in King George Hospital, Visakhapatnam from August 2012 to February 2015. This study was aimed to present the experience in treating patients with traumatic posterior fossa extra dural hematoma 2 and to discuss the clinical features, risk factors 4 and outcome. 5 Posterior fossa extradural hematoma 2,3 uncommon but potentially fatal condition. The incidence of posterior fossa extra dural hematoma 2,3 among intracranial extra dural hematomas has been reported 4% to 7%. Occipital skull bone fracture with venous sinus bleeding that resulted in a posterior fossa extradural haematoma. 2 low Gcs [or] hematoma more than 10ml were subjected to evacuation. Since the volume of the posterior fossa 6 is small, patients deteriorate early because of compression of vital structures in the brain stem, development of obstructive hydrocephalus, which is visible in the CT scan in only thirty percent of cases.
Anastomosis found in the adulthood between the carotid and vertebro-basilar systems, apart from the posterior communicating artery, are extremely infrequent and are due to the persistence of vessels that joined both systems during the fetal period. This carotidvertebrobasilar anastomosis are the trigeminal, otic, and hypoglossal and proatlantal arteries. Persistent trigeminal artery is the commonest of the above mentioned four arteries. The reported incidence is about 0.2%. Patients may be asymptomatic or present symptoms due to low flow of posterior circulation or carotid microembolization from posterior circulation. PTA can cause trigeminal neuralgia. We report in this paper a case of a persistant trigeminal artery found in an adult female with a para pcom aneurysm who had persistent trigeminal artery which was seen in CT angiogram. KEYWORDS: Persistent, Trigeminal artery, Intracranial aneurysm. KEYMESSAGES: Persistent trigeminal represents one of the persistent fetal arteries in cerebral circulation which communicate between internal carotid and vertebro basilar circulation. While pcom artery is the main communicating artery that persists in an adult, persistent trigeminal artery is seen in a few cases.
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