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https://www.readbyqxmd.com/read/27909274/-three-mitral-valve-operations-in-a-patient-with-trousseau-syndrome-and-nonbacterial-thrombotic-endocarditis-caused-by-ovarian-cancer
#1
Masahito Saito, Naoki Asano, Kazunori Ota, Kazuho Niimi, Koyu Tanaka, Shigeyoshi Gon, Hiroshi Takano
A 52-year-old woman was admitted to our hospital for acute right hemi-paresis, left homonymous hemianopia, and fever. Magnetic resonance imaging of the brain showed multiple cerebral infarctions and transesophageal echocardiography (TEE) revealed a vegetation on the posterior leaflet of her mitral valve. Mitral valve repair was performed under a diagnosis of infective endocarditis (IE). Further multiple cerebral infarctions occurred on the 11th postoperative day, resulting in left hemiplegia and dysarthria...
December 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27903814/blink-associated-contralateral-eccentric-saccades-as-a-rare-sign-of-unilateral-brain-injury
#2
Ilaria Zivi, Eugenio Bertelli, Giacinta Bilotti, Ignazio Alessandro Clemente, Leopold Saltuari, Giuseppe Frazzitta
OBJECTIVE: To describe a rare sign of unilateral brain injury as a form of unwanted blink-associated contralateral eccentric saccades. METHODS: A 62-year-old patient who underwent an ischemic stroke affecting the entire right middle cerebral artery territory came to our attention 1 year after stroke, manifesting with transient contralateral conjugate gaze deviations associated with spontaneous blinking. We complemented the regular neurologic evaluation with brain MRI, study of evoked potentials, electroneurography of the facial nerve, and infrared video-oculoscopy...
November 30, 2016: Neurology
https://www.readbyqxmd.com/read/27896492/hemianopic-line-bisection-error-in-a-patient-with-alzheimer-s-disease
#3
Heeyoung Kang, Soo-Kyoung Kim, Ki-Jong Park, Nack-Cheon Choi, Oh-Young Kwon, Byeong Hoon Lim
Visual symptoms are frequently observed in posterior cortical atrophy compared to typical amnestic Alzheimer's disease (AD). We report the case of a patient with amnestic AD with long-lasting homonymous hemianopia. A 62-year-old woman, who was diagnosed in amnestic AD, complained of visual disturbance. She had left homonymous hemianopia in the perimetry test and left tactile extinction. Regardless of posture, retinotopically leftward error was observed on 21 cm line bisection test. Brain single photon emission computerized tomography (SPECT) showed bilateral temporoparietal hypoperfusion, which was more severe to the right than left side...
November 28, 2016: Neurological Sciences
https://www.readbyqxmd.com/read/27886894/homonymous-hemianopia-and-vision-restoration-therapy
#4
REVIEW
Alexander Frolov, Jeanne Feuerstein, Prem S Subramanian
Homonymous hemianopia from stroke causes visual disability. Although some patients experience spontaneous improvement, others have limited to no change and may be left with a severe disability. Current rehabilitation strategies are compensatory and cannot restore function. Animal studies suggest that central nervous system plasticity could allow for redirection of lost visual function into undamaged areas of cortex. A commercial therapy system was developed, from which claims of visual field expansion were disputed by independent researchers...
February 2017: Neurologic Clinics
https://www.readbyqxmd.com/read/27879307/unusual-cause-of-profound-weight-loss-in-a-young-woman
#5
Ashu Rastogi, Pavan Uppula, Kanchan Kumar Mukherjee, Anil Bhansali
A 27-year-old woman presented with anorexia, weight loss and psychiatric symptoms for the past 4 years. She did not have history of headache, visual disturbances or symptoms of raised intracranial pressure. She was sarcopenic with body mass index of 10.16 kg/m(2)Her systemic examination was normal except for temporal hemianopia suggesting a sellar/suprasellar lesion. Hormonal evaluation revealed pan-hypopituitarism with central diabetes insipidus. Subsequent neuroimaging revealed sellar-suprasellar mass lesion with intense contrast enhancement and leptomeningeal metastases...
November 22, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27773906/lateral-geniculate-body-presenting-only-hemorrhage-homonymous-hemianopia-a-case-report
#6
Haruki Tokida, Yuhei Kanaya, Yutaka Shimoe, Shigeru Yamori, Koichi Tagawa, Masaru Kuriyama
We report a case of a 55-year-old man who developed acute-onset narrowing of his visual field. He showed right homonymous hemianopsia without any other neurological symptoms and signs. Brain CT and MRI showed localized hemorrhage (about 1.6 ml) in the left lateral geniculate body (LGB). A cerebral angiography showed no vascular anomalies of cerebral vessels, and the left anterior choroidal artery and left lateral posterior choroidal artery could be visualized well. He had hypertension, polycythemia and dyslipidemia and was a habitual smoker and an alcoholic...
November 29, 2016: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/27773358/avoiding-unseen-obstacles-subcortical-vision-is-not-sufficient-to-maintain-normal-obstacle-avoidance-behaviour-during-reaching
#7
Alasdair I Ross, Thomas Schenk, Jutta Billino, Mary J Macleod, Constanze Hesse
Previous research found that a patient with cortical blindness (homonymous hemianopia) was able to successfully avoid an obstacle placed in his blind field, despite reporting no conscious awareness of it [Striemer, C. L., Chapman, C. S., & Goodale, M. A., 2009, PNAS, 106(37), 15996-16001]. This finding led to the suggestion that dorsal stream areas, that are assumed to mediate obstacle avoidance behaviour, may obtain their visual input primarily from subcortical pathways. Hence, it was suggested that normal obstacle avoidance behaviour can proceed without input from the primary visual cortex...
October 3, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27730848/the-impact-of-central-sparing-on-the-word-length-effect-in-hemianopia
#8
Cristina Rubino, Shanna C Yeung, Jason J S Barton
Studies suggest that a word-length effect of up to 160 ms/letter distinguishes hemianopic dyslexia from pure alexia. However, partial preservation of central vision is common in right hemianopia, but its effects on single-word reading are unknown. Eighteen healthy subjects read single words with a gaze-contingent right hemianopia simulation that varied the degree of central sparing. Mean reading onset time declined with small degrees of central sparing, but the word-length effect did not decrease until sparing exceeded 3...
October 12, 2016: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/27730295/-partial-homonymous-hemianopia-of-traumatic-origin-after-riding-a-high-speed-amusement-ride
#9
B Hohberger, R Trollmann, O Rompel, P Gölitz, G-C Gusek-Schneider
Amusement park injuries have become more common in recent years. Especially neurological symptoms dominate clinical findings. In this article, the case of a 15-year-old child with homonymous hemianopia due to an atypical intracranial bleeding with subdural hematoma after a giant swing ride is described for the first time.
October 11, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/27729605/-a-case-of-suprasellar-germinoma-that-spontaneously-regressed-before-endoscopic-biopsy
#10
Shusuke Yamamoto, Hideo Hamada, Shoichi Nagai, Satoshi Kuroda
We present a very rare case of suprasellar germinoma that spontaneously regressed before endoscopic biopsy. An 8-year-old boy was admitted to our hospital due to headache, polydipsia, and polyuria. Neurological examination performed on admission revealed bitemporal hemianopia. Enhanced MRI demonstrated a homogeneously enhanced tumor mass in the suprasellar region obstructing the foramen of Monro. Tests for all serum tumor markers were negative. Plain X-ray and CT scan were performed once and twice, respectively, for seven days between admission and endoscopic biopsy...
October 2016: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/27570398/unusual-case-of-recurrent-smart-stroke-like-migraine-attacks-after-radiation-therapy-syndrome
#11
Ramnath Santosh Ramanathan, Gayathri Sreedher, Konark Malhotra, Zain Guduru, Deeksha Agarwal, Mary Flaherty, Timothy Leichliter, Sandeep Rana
Stroke-like migraine attacks after radiation therapy (SMART) syndrome is a rare delayed complication of cerebral radiation therapy. A 53-year-old female initially presented with headache, confusion and left homonymous hemianopia. Her medical history was notable for cerebellar hemangioblastoma, which was treated with radiation in 1987. Her initial brain MRI (magnetic resonance imaging) revealed cortical enhancement in the right temporo-parieto-occipital region. She improved spontaneously in 2 weeks and follow-up scan at 4 weeks revealed no residual enhancement or encephalomalacia...
July 2016: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/27570378/endovascular-treatment-of-unruptured-posterior-circulation-intracranial-aneurysms
#12
Xianli Lv, Huijian Ge, Hengwei Jin, Hongwei He, Chuhan Jiang, Youxiang Li
BACKGROUND AND PURPOSE: Endovascular treatment of unruptured posterior circulation intracranial aneurysms (UPCIAs) is limited in the International Study of Unruptured Intracranial Aneurysms (ISUIA). The aim of this study is to evaluate the periprocedural morbidity, mortality, and midterm clinical and angiographic follow-ups of endovascular treatment of UPCIAs. MATERIALS AND METHODS: Retrospective analysis of all patients treated in a 2-year period (89 patients: 10-78 years of age, mean: 45...
July 2016: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/27567574/ectopic-suprasellar-thyrotropin-secreting-pituitary-adenoma-case-report-and-literature-review
#13
Qing Wang, Xiao-Jie Lu, Jun Sun, Jing Wang, Ci You Huang, Zhi Feng Wu
BACKGROUND: Ectopic thyroid-stimulating hormone (TSH)-secreting pituitary adenomas are rare and can often be misdiagnosed as primary hyperthyroidism. We present a case of an ectopic suprasellar TSH-secreting pituitary adenoma. A literature review of previously reported ectopic TSH-secreting and suprasellar pituitary adenomas is included to illustrate the clinical characteristics of this disease entity and the diversity of operative approaches to treating ectopic suprasellar pituitary adenomas...
August 25, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27555916/a-case-of-pituitary-abscess-presenting-without-a-source-of-infection-or-prior-pituitary-pathology
#14
Derick Adams, Philip A Kern
UNLABELLED: Pituitary abscess is a relatively uncommon cause of pituitary hormone deficiencies and/or a suprasellar mass. Risk factors for pituitary abscess include prior surgery, irradiation and/or pathology of the suprasellar region as well as underlying infections. We present the case of a 22-year-old female presenting with a spontaneous pituitary abscess in the absence of risk factors described previously. Her initial presentation included headache, bitemporal hemianopia, polyuria, polydipsia and amenorrhoea...
2016: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/27552350/restoration-of-vision-after-brain-injury-using-magnet-glasses
#15
Kevin E Houston, Eleftherios I Pachalis, Danielle C Angueira, P Matthew Bronstad, Anna M Barrett, Mary Alexis Iaccarino
Visual impairments are common after traumatic brain injury (TBI) and negatively affect quality of life. We describe a 39-year-old woman with a severe TBI who was evaluated by the inpatient optometry and vision rehabilitation service with findings of complete right homonymous hemianopia and right cranial nerve III palsy with 30-degree right exotropia (eye turn out) and complete right ptosis (eyelid will not open). The 30-degree exotropia advantageously generated 30 degrees of right visual field expansion when the right ptosis was treated with a magnetic levator prosthesis, which restores eyelid opening...
August 22, 2016: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/27520801/occipital-lobe-seizures-and-subcortical-t2-and-t2-hypointensity-associated-with-nonketotic-hyperglycemia-a-case-report
#16
Fuyuko Sasaki, Sumihiro Kawajiri, Sho Nakajima, Ai Yamaguchi, Yuji Tomizawa, Kazuyuki Noda, Nobutaka Hattori, Yasuyuki Okuma
BACKGROUND: Nonketotic hyperglycemia often causes seizures. Recently, seizures associated with nonketotic hyperglycemia have been found to be associated with subcortical T2 hypointensity on magnetic resonance imaging, especially in the occipital lobes. However, the mechanism remains unclear, although iron accumulation is suggested. We present a case of occipital lobe seizures associated with nonketotic hyperglycemia supporting the hypothesis that the mechanism of subcortical T2 hypointensity is iron accumulation using gradient-echo T2*-weighted magnetic resonance imaging...
2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27494512/clinical-correlates-of-computationally-derived-visual-field-defect-archetypes-in-patients-from-a-glaucoma-clinic
#17
Sophie Cai, Tobias Elze, Peter J Bex, Janey L Wiggs, Louis R Pasquale, Lucy Q Shen
PURPOSE: To assess the clinical validity of visual field (VF) archetypal analysis, a previously developed machine learning method for decomposing any Humphrey VF (24-2) into a weighted sum of clinically recognizable VF loss patterns. MATERIALS AND METHODS: For each of 16 previously identified VF loss patterns ("archetypes," denoted AT1 through AT16), we screened 30,995 reliable VFs to select 10-20 representative patients whose VFs had the highest decomposition coefficients for each archetype...
August 5, 2016: Current Eye Research
https://www.readbyqxmd.com/read/27486553/validation-of-a-tablet-as-a-tangent-perimeter
#18
Algis J Vingrys, Jessica K Healey, Sheryl Liew, Veera Saharinen, Michael Tran, William Wu, George Y X Kong
PURPOSE: To describe a tangent perimeter developed on an Apple iPad (Melbourne Rapid Field, MRF). METHODS: The MRF assays 66 locations over 28° × 18° by having the patient vary fixation. Spot size and background luminance are paired to yield constant thresholds across the field. Spot locations were selected after analysis of 360 patient records. The capacity of the MRF to detect defects was verified in five participants (age 22-28 years) by simulating four common losses: central, arcuate, quadrant, and hemianopia...
July 2016: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/27455873/paradoxical-cerebral-air-embolism-causing-large-vessel-occlusion-treated-with-endovascular-aspiration
#19
Patrick J Belton, Ashish Nanda, Syeda L Alqadri, Gurpreet S Khakh, Premkumar Nattanmai Chandrasekaran, Christopher Newey, William E Humphries
Cerebral air embolism is a dreaded complication of invasive medical procedures. The mainstay of therapy for patients with cerebral air embolism has been hyperbaric oxygen therapy, high flow oxygen therapy, and anticonvulsants. We present a novel therapeutic approach for treatment of cerebral air embolism causing large vessel occlusion, using endovascular aspiration. Our patient developed a cerebral air embolism following sclerotherapy for varicose veins. This caused near total occlusion of the superior division of the M2 segment of the right middle cerebral artery...
July 25, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27454140/inefficient-search-strategies-in-simulated-hemianopia
#20
Anna Nowakowska, Alasdair D F Clarke, Arash Sahraie, Amelia R Hunt
We investigated whether healthy participants can spontaneously adopt effective eye movement strategies to compensate for information loss similar to that experienced by patients with damage to visual cortex (hemianopia). Visual information in 1 hemifield was removed or degraded while participants searched for an emotional face among neutral faces or a line tilted 45° to the right among lines of varying degree of tilt. A bias to direct saccades toward the sighted field was observed across all 4 experiments...
July 25, 2016: Journal of Experimental Psychology. Human Perception and Performance
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