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Intracranial dermoid cyst mimicking hemorrhage

Case report and review of the literature

Rene O. Sanchez-Mejia, Mary Limbo, Tarik Tihan, Michael G. Galvez, Meredith V. Woodward, and Nalin Gupta

demonstrate increased T 1 - and variable T 2 -weighted signal. 15 Infrequently, the cyst contents can be hyperdense, 6 , 13 , 15 mimicking a hemorrhage. It is important to recognize the unusual imaging characteristics of some dermoid cysts because they are managed differently from posterior fossa hemorrhages. Case Report History and Examination This 16-year-old boy presented with a history of chronic headaches that had recently increased in severity and frequency. On physical examination, he was found to have no neurological deficit or midline cutaneous

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Hemorrhage rates after external ventricular drain placement

Clinical article

Paul A. Gardner, Johnathan Engh, Dave Atteberry, and John J. Moossy

puncture is not as safe as Dandy believed. The 2 most common complications of ventriculostomy drain placement are infection and hemorrhage. 5 , 9 Studies on incidence, prevention, and management of EVD catheter infection are widespread; multiple techniques and protocols have been presented in an attempt to minimize EVD-related infections, most asserting that the duration of drainage is correlated with infection rates. 5 , 6 , 8 , 9 , 11 In fact, there is a growing trend among medical device manufacturers to produce and prove the efficacy of antibiotic

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Rate of spontaneous hemorrhage in histologically proven cases of pilocytic astrocytoma

J. Bradley White, David G. Piepgras, Bernd W. Scheithauer, and Joseph E. Parisi

haemorrhage . Childs Nerv Syst 17 : 567 – 569 , 2001 10.1007/s003810100449 5 Golash A , Thorne J , West CG : Low grade pilocytic astrocytoma presenting as a spontaneous intracerebral haemorrhage in a child . Br J Neurosurg 12 : 59 – 62 , 1998 10.1080/02688699845564 6 Kondziolka D , Bernstein M , Resch L , Tator CH , Fleming JF , Vanderlinden RG , : Significance of hemorrhage into brain tumors: clinicopathological study . J Neurosurg 67 : 852 – 857 , 1987 10.3171/jns.1987.67.6.0852 7 Lieu AS , Hwang SL , Howng SL , Chai

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Aphasia and left thalamic hemorrhage

Arden F. Reynolds Jr., A. Basil Harris, George A. Ojemann, and Paul T. Turner

. Confin Neurol 36: 33–60, 1974 10.1159/000102782 4. Bugiani O , Conforto C , Sacco G : Aphasia in thalamic haemorrhage. Lancet 1 : 1052 , 1969 (Letter) Bugiani O, Conforto C, Sacco G: Aphasia in thalamic haemorrhage. Lancet 1: 1052, 1969 (Letter) 5. Ciemins VA : Localized thalamic hemorrhage. A cause of aphasia. Neurology 20 : 776 – 782 , 1970 Ciemins VA: Localized thalamic hemorrhage. A cause of aphasia. Neurology 20: 776–782, 1970 10.1212/WNL.20.8.776 6. Fisher CM

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Spontaneous hemorrhage associated with a pilomyxoid astrocytoma

Case report

Oren N. Gottfried, Daniel W. Fults, Jeannette J. Townsend, and William T. Couldwell

astrocytoma presenting as a spontaneous intracerebral haemorrhage in a child. Br J Neurosurg 12 : 59 – 62 , 1998 Golash A, Thorne J, West CG: Low-grade pilocytic astrocytoma presenting as a spontaneous intracerebral haemorrhage in a child. Br J Neurosurg 12: 59–62, 1998 11. Kondziolka D , Bernstein M , Resch L , et al : Significance of hemorrhage into brain tumors: clinicopathological study. J Neurosurg 67 : 852 – 857 , 1987 Kondziolka D, Bernstein M, Resch L, et al: Significance of hemorrhage into brain

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Endolymphatic sac tumor demonstrated by intralabyrinthine hemorrhage

Case report

Jay Jagannathan, John A. Butman, Russell R. Lonser, Alexander O. Vortmeyer, Christopher K. Zalewski, Carmen Brewer, Edward H. Oldfield, and H. Jeffrey Kim

not detectable on routine imaging studies and that the mechanisms that underlie symptom formation may include tumor-related endolymphatic hydrops and/or intralabyrinthine hemorrhage. 1 , 7 , 10 However, these hypotheses have not been confirmed by imaging studies or clinical experience. We describe a unique case involving a patient with VHL disease and audiovestibular dysfunction who was discovered at the time of surgery to have a small ELST and in whom neuroimaging revealed no abnormal finding other than intralabyrinthine hemorrhage. Case Report History and

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Hemorrhagic colloid cyst with intraventricular extension

Case report

Yoji Tamura, Teppei Uesugi, Adam Tucker, Tohru Ukita, Masao Tsuji, Hiroji Miyake, and Toshihiko Kuroiwa

C olloid cysts of the third ventricle are benign tumors and a well-known cause of sudden death due to acute obstructive hydrocephalus. 6 , 13 , 18 , 21 , 26 In general, colloid cysts expand due to secretion of an amorphous and protein-rich fluid resulting in obstruction of CSF flow at the foramen of Monro. Although hemorrhage within the cyst can lead to cyst expansion, this condition is extremely rare. To the best of the authors' knowledge, there have been only 9 cases of hemorrhagic colloid cysts reported in the English literature. 3 , 5 , 7 , 8 , 10

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Hemorrhage into an intradiploic arachnoid cyst

Case report

Ashok Mahade Hande and Anil Pandurang Karapurkar

arachnoid cysts, postulating temporal lobe agenesis as the cause. All of Robinson's cases of intracranial arachnoid cysts were strictly intradural. Five cases of intradiploic arachnoid cysts have been reported. 3, 11, 14 We describe the case of a patient presenting with hemorrhage into a massive intracranial extradural arachnoid cyst. Case Report This 35-year-old man had the sudden onset of headache, nausea, and vomiting 1 year prior to admission. He was treated with intravenous fluids at a municipal hospital in another city, after which he recovered and was

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Hemorrhagic complication of stereotactic surgery in patients with movement disorders

Tohru Terao, Hiroshi Takahashi, Fusako Yokochi, Makoto Taniguchi, Ryouichi Okiyama, and Ikuma Hamada

S tereotactic surgery for movement disorders has recently undergone a resurgence of interest. 2, 8, 12, 28, 36, 43, 44 At many centers MER is now used to enhance the precision of stereotactic procedures. 23 Whether the beneficial information received by recording microelectrode passes outweighs the risk of tissue damage, however, remains controversial. 19 Of particular concern is the induction of intracranial hemorrhage by microelectrode penetration. 26 Hematomas occasionally induce clinical symptoms such as changes in consciousness, hemiparesis, or visual

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Recurrent intraparenchymal hemorrhages from angiographically occult vascular malformations

Howard Tung, Steven L. Giannotta, Parakrama T. Chandrasoma, and Chi-Shing Zee

A ngiographically occult vascular malformations of the brain are increasingly being identified due to the widespread availability of sophisticated imaging techniques such as computerized tomography (CT) and magnetic resonance (MR) imaging. Recent reports have highlighted the CT and MR characteristics of these lesions and their corresponding clinical and histopathological profiles. 6, 17, 23, 28 However, the natural history of these lesions remains obscure. The incidence and impact of recurrent hemorrhage have not been analyzed in any systematic fashion. The