Convexity hemorrhage

AIM: The aim of this study was to identify preoperative magnetic resonance imaging (MRI) findings that can predict the shunt responsiveness in idiopathic normal-pressure hydrocephalus (iNPH) patients and to investigate postoperative outcome and complications. MATERIALS AND METHODS: A total of 192 patients with iNPH who underwent shunt at our hospital between 2000 and 2021 were included to investigate complications. Of these, after exclusion, 127 (1-month postoperative follow-up) and 77 (1-year postoperative follow-up) patients were evaluated...

A previously healthy man in his 60s presents with a one-day history of insidious onset headache and 'walking into doors'. He reported transient right arm pain and tingling but no weakness. A CT brain showed a right middle cerebral artery (MCA) infarct as well as a synchronous right frontal lobe convexal subarachnoid haemorrhage (cSAH). An arch to vertex CT angiogram demonstrated right MCA occlusion and complete right internal carotid artery (ICA) occlusion from its origin. Reconstitution of flow was seen within the distal right ICA at the level of the distal foramen lacerum...

OBJECTIVE: Cerebral cavernous malformations (CMs) are pathological lesions that cause discrete cortical disruption with hemorrhage, and their transcortical resections can cause additional iatrogenic disruption. The analysis of microsurgically treated CMs might identify areas of "eloquent noneloquence," or cortex that is associated with unexpected deficits when injured or transgressed. METHODS: Patients from a consecutive microsurgical series of superficial cerebral CMs who presented to the authors' center over a 13-year period were retrospectively analyzed...

Hemorrhagic changes in a dural arteriovenous fistula are typically associated with cortical venous reflux and occur as intracerebral or subarachnoid hemorrhages. A convexity dural arteriovenous fistula (DAVF) usually flows directly into the cortical veins and exhibits cortical venous reflux. Herein, we report a rare case of a convexity DAVF without cortical venous reflux presenting with a pure acute subdural hematoma. A 19-year-old man complaining of headache without any history of head injury was diagnosed with a left acute subdural hematoma on magnetic resonance imaging (MRI) and referred to our hospital...

A 25-year-old woman presented with exophthalmos. With the diagnosis of dural arteriovenous fistula of the transverse sinus, the patient underwent coil embolization. Fifteen years later, she sustained visual disturbance due to de novo tuberculum sellae meningioma that was resected. Surveillance magnetic resonance imaging (MRI) performed at the age of 42 years detected tumor recurrence and small, apparent meningioma in the cerebral convexity. The patient underwent the second tumor resection at the age of 46 years...

OBJECTIVE: Recently, the occlusion rate of transarterial embolization (TAE) for intracranial non-sinus-type dural arteriovenous fistulas (NSDAVFs) has improved after ONYX was introduced. Additionally, when TAE for NSDAVF is unsuccessful, transvenous embolization (TVE) has become available as an alternative treatment. We investigated the factor for the favorable occlusion rate of endovascular treatment for NSDAVF at our institutions. METHODS: Two hundred and twenty-seven patients with intracranial dural arteriovenous fistulas (DAVFs) were treated at our institutions between September 2014 and October 2022...

Severe intracranial trauma during torture or assault is reportedly caused by shaken adult syndrome. However, intracranial traumas caused by natural forces, excluding human factors and collision impact, are extremely rare. We report an autopsy case of shaken adult syndrome caused by ocean wave forces. A man in his 40s without any medical history was washed away by a wave during recreational fishing. He was found approximately 500 m away from the fishing point drifting on the ocean in a state of cardiopulmonary arrest and was confirmed dead, with no response to cardiopulmonary resuscitation, 3 h after the accident...

BACKGROUND: Cortical superficial siderosis (cSS) has recently emerged as one of the most important predictors of symptomatic intracerebral hemorrhage and is a risk factor for post-stroke dementia in cerebral amyloid angiopathy (CAA). However, it remains unknown whether cSS is just a marker of severe CAA pathology or may itself contribute to intracerebral hemorrhage risk and cognitive decline. cSS is a chronic manifestation of convexal subarachnoid hemorrhage and is neuropathologically characterized by iron deposits in the superficial cortical layers...

BACKGROUND: Convexity meningiomas (CM) can be successfully treated with neurosurgery. However, clinical complications due to CM have been reported. Moreover, systematic investigations of CM with respect to all relevant clinical factors are currently lacking. METHODS: We performed a systematic investigation in 210 patients with supratentorial CM considering all relevant clinical and radiological factors, with a follow-up time of 19.5 years. RESULTS: Among 812 patients with intracranial meningiomas treated in our department (2003-2020), 28...

BACKGROUND: Intracranial arachnoid cysts (ACs) are developmental anomalies usually filled with cerebrospinal fluid (CSF), rarely resolving throughout life. Here, we present a case of an AC with intracystic hemorrhage and subdural hematoma (SDH) that developed after a minor head injury before gradually disappearing. Neuroimaging demonstrated specific changes from hematoma formation to AC disappearance over time. The mechanisms of this condition are discussed based on imaging data. CASE DESCRIPTION: An 18-year-old man was admitted to our hospital with a head injury caused by a traffic accident...

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BACKGROUND AND PURPOSE: Cerebral amyloid angiopathy (CAA) is a common cause of intracranial hemorrhage (ICH), which is a risk factor for seizures. The incidence and risk factors of seizures associated with a heterogeneous cohort of CAA patients have not been studied. METHODS: We conducted a retrospective study of patients with CAA treated at Mayo Clinic Florida between 1 January 2015 and 1 January 2021. CAA was defined using the modified Boston criteria version 2...

Reversible segmental narrowing of the intracranial arteries has been described since several decades in numerous clinical settings, using variable nosology. Twenty-one years ago, we tentatively proposed the unifying concept that these entities, based on similar clinical-imaging features, represented a single cerebrovascular syndrome. This "reversible cerebral vasoconstriction syndrome" or RCVS has now come of age. A new International Classification of Diseases code, (ICD-10, I67.841) has been established, enabling larger-scale studies...

Anilocra harazakii sp. nov. and Anilocra boucheti sp. nov. are described from specimens collected from Pterocaesio marri (Caesionidae) in the northern Ryukyu Islands, Japan and Myripristis kuntee (Holocentridae) off Madang, Papua New Guinea, respectively. Anilocra harazakii sp. nov. is characterized by the combination of the following characters in the female: the elongate narrow body dorsally vaulted; the pleonite 1 concealed by the pereonite 7; the uropod extending that of the angled pleotelson, and its endopod longer than the exopod; and the dactyli of only pereopods 2 and 3 with one nodule on anterior margins...

OBJECTIVE: Subdural hemorrhage (SDH) has been reported to be the most frequent intracranial hemorrhagic complication following open heart surgery; however, its clinical features and pathophysiology remain unclear. The aim of this retrospective study was to elucidate the incidence, clinical course, and factors associated with the development of symptomatic SDH following heart valve surgery. METHODS: A retrospective review of medical records on the development of symptomatic SDH after heart valve surgery involving cardiopulmonary bypass (CPB) from April 2011 to March 2016 was performed...

A patient in their 50s presented with postcoital severe headache. Computed tomography revealed a subarachnoid haemorrhage but also a subdural hematoma at the left convexity. CT angiography revealed a large irregular anterior communicating artery aneurysm but also cortical serpiginous vessels suggestive of a vascular malformation adjacent to the subdural hematoma in the left convexity. DSA confirmed the ruptured aneurysm but also revealed a Borden 3 type dural arteriovenous fistula on the left convexity. The fistula had arterial supply mostly from middle meningeal artery branches and venous drainage directly to a left cortical vein adjacent to superior sagittal sinus...

Introduction Subdural hematoma without subarachnoid hemorrhage secondary to intracranial aneurysm rupture is rare and may complicate patient management due to delay in diagnosis and subsequent treatment. Herein, we describe a case presenting with pure SDH secondary to the rupture of a posterior communicating artery infundibular dilatation (PcoA-ID). To the best of our knowledge, this is the first case of rupture of a PcoA-ID with SDH in the convexity and tentorium, which also tracked into the upper cervical spine along the subdural space...

A 65-year-old woman with known right dural based lesion and metastatic pancreatic neuroendocrine tumor presented with multiple days of progressive lethargy and left sided weakness culminating with obtundation and dilated pupils. CT scan demonstrated acute right convexity subdural hematoma and frontotemporal intraparenchymal hemorrhage with 1.3 cm of midline shift, uncal herniation and increase in size of now hemorrhagic dural based lesion. She underwent emergency hemicraniectomy for evacuation of subdural hematoma and resection of hemorrhagic meningioma with excellent post-operative result including improvement in midline shift and gross total resection of lesion...

Pheochromocytomas are rare adrenal tumors that are often diagnosed in workup for endocrine causes of refractory hypertension, as an incidental imaging finding, or in patients with classic symptoms of headache, palpitations, and/or diaphoresis. We describe a case of pheochromocytoma presenting in a 63-year-old woman with spontaneous and multifocal subarachnoid and intracerebral hemorrhage without underlying vasculopathy. The patient previously had no documented episodes of hypertension and took no regular medications...

BACKGROUND: Cerebral arteriovenous malformations (CAVMs) are either clinically silent or symptomatic. The most common presentation in more than half of all CAVMs presenting patients is hemorrhage which is accompanied by long-standing neurological morbidity and mortality. This report presents a case of an atypical large, slow-flow paramedian AVM with a dilated venous varix managed with surgery. The impact of the intraoperative findings on the diagnosis and the operative technique will be discussed...