scholarly journals Intraocular Silicone Oil Masquerading as Terson Syndrome

2016 ◽  
Vol 2016 ◽  
pp. 1-3
Author(s):  
Navid Elmi Sadr ◽  
Bijan Samavat ◽  
Payam Mehrian ◽  
Alireza Hedayatfar
Keyword(s):  
Computed Tomography ◽  
Intracranial Hemorrhage ◽  
False Positive ◽  
Silicone Oil ◽  
Vitreous Hemorrhage ◽  
Diabetic Woman ◽  
High Attenuation ◽  
Terson Syndrome ◽  
Intraocular Hemorrhage ◽  
Positive Results

Introduction. Terson syndrome is described as intraocular hemorrhage in association with any type of intracranial hemorrhage and is associated with higher mortality rate and vision loss. Intraocular hemorrhage in Terson syndrome may be diagnosed using computed tomography but there are false positive results. Silicone oil which is widely used for internal tamponade of complicated retinal detachments has high attenuation on computed tomography and hyperintensity on T1-weighted magnetic resonance imaging that can mimic intraocular hemorrhage. This report shows that silicone oil is another origin of false positive results in interpreting CT findings for detecting Terson syndrome.Case Report. A 71-year-old diabetic woman presented with loss of consciousness. Brain computed tomography revealed right cerebellar hemorrhage and ventricular hemorrhage and hyperdensity in vitreous cavity of the left eye that was initially interpreted as vitreous hemorrhage. Terson syndrome was the initial diagnosis but ophthalmoscopic examination and brain MRI showed that the left eye had silicone oil tamponade.Conclusion. Without knowing the history of previous vitreoretinal surgery, CT scan findings of intraocular silicone oil may be interpreted as vitreous hemorrhage. In patients with concomitant intracranial hemorrhage, it can masquerade as Terson syndrome.

scholarly journals Vitreous Hemorrhage after Aneurismal Rupture: Terson Syndrome

2016 ◽  
Vol 37 (03) ◽  
pp. 163-166
Author(s):  
Rodrigo Souza ◽  
Guilherme Aguiar ◽  
Sarah Weber ◽  
Juan Flores ◽  
Mario Conti ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Cerebral Aneurysm ◽  
Ultrasound Examination ◽  
Vitreous Hemorrhage ◽  
Terson Syndrome ◽  
Microsurgical Clipping ◽  
Intraocular Hemorrhage ◽  
Neurosurgical Treatment ◽  
One Year ◽  
Spontaneous Subarachnoid Hemorrhage

Introduction Terson syndrome is described as an intraocular hemorrhage consequent to a spontaneous subarachnoid hemorrhage (SSAH). In the present article, we describe cases of patients who underwent neurosurgical treatment of ruptured cerebral aneurysm at our institution over a period of one year, and who were diagnosed with Terson syndrome. Methods The present study included patients with a diagnosis of SSAH by rupture of a cerebral aneurysm who underwent treatment in our neurosurgical service from December 2009 to December 2010. The patients were followed-up for a minimum of 20 months. We have also performed a literature review and compared the data with those available in the current literature. Results The present study included 34 patients, 18 (53%) of which underwent endovascular treatment, and 16 (47%) who underwent microsurgical clipping. In the sample, the mortality was 14.7% (5 patients), the same percentage of patients who were diagnosed with Terson Syndrome, which is an incidence of 14.7%. Regarding the ophthalmologic evaluation, all patients had vitreous hemorrhage detected by an ultrasound examination, which was unilateral in only two patients. Visual acuity improved in all patients, being incomplete in only one of them. Conclusion Terson syndrome is relatively common and is associated with higher mortality. With the existence of an effective treatment, it should be investigated in all patients with SSAH.

An analysis of true- and false-positive results of vocal fold uptake in positron emission tomography-computed tomography imaging

2017 ◽  
Vol 132 (3) ◽  
pp. 270-274 ◽  
Author(s):  
N Seymour ◽  
G Burkill ◽  
M Harries
Keyword(s):  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Head And Neck ◽  
False Positive ◽  
Vocal Fold ◽  
Emission Tomography ◽  
True Positive ◽  
Positron Emission ◽  
Computed Tomography Scans ◽  
Positive Results

AbstractObjectives:Positron emission tomography-computed tomography with fluorine-18 fluorodeoxy-D-glucose has a major role in the investigation of head and neck cancers. Fluorine-18 fluorodeoxy-D-glucose is not a tumour-specific tracer and can also accumulate in benign pathology. Therefore, positron emission tomography-computed tomography scan interpretation difficulties are common in the head and neck, which can produce false-positive results. This study aimed to investigate patients detected as having abnormal vocal fold uptake on fluorine-18 fluorodeoxy-D-glucose positron emission tomography-computed tomography.Methods:Positron emission tomography-computed tomography scans were identified over a 15-month period where reports contained evidence of unilateral vocal fold uptake or vocal fold pathology. Patients’ notes and laryngoscopy results were analysed.Results:Forty-six patients were identified as having abnormal vocal fold uptake on positron emission tomography-computed tomography. Twenty-three patients underwent positron emission tomography-computed tomography and flexible laryngoscopy: 61 per cent of patients had true-positive positron emission tomography-computed tomography scans and 39 per cent had false-positive scan results.Conclusion:Most patients referred to ENT for abnormal findings on positron emission tomography-computed tomography scans had true-positive findings. Asymmetrical fluorine-18 fluorodeoxy-D-glucose uptake should raise suspicion of vocal fold pathology, accepting a false-positive rate of approximately 40 per cent.

scholarly journals Value of computed tomography for evaluating the subglottis in laryngeal and hypopharyngeal squamous cell carcinoma

2007 ◽  
Vol 125 (2) ◽  
pp. 73-76 ◽  
Author(s):  
Ricardo Pires de Souza ◽  
Nestor de Barros ◽  
Ademar José de Oliveira Paes Junior ◽  
Olger de Souza Tornin ◽  
Abrão Rapoport ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Predictive Value ◽  
False Positive ◽  
False Negative ◽  
Hypopharyngeal Squamous Cell Carcinoma ◽  
Computed Tomography Scans ◽  
Positive Results

CONTEXT AND OBJECTIVE: Subglottic involvement in squamous cell carcinoma is a determining factor for contraindicating conservative partial surgery. The subglottis is easily identified by axial computed tomography sections. The present study aimed to evaluate the occurrence of false-negative and false-positive results, and the overall accuracy of staging by computed tomography, in order to detect the involvement of the subglottic laryngeal compartment, in cases of laryngeal and hypopharyngeal squamous cell carcinoma. DESIGN AND SETTING: Retrospective, non-randomized study of patients treated at Hospital Heliópolis, São Paulo, Brazil. METHODS: Computed tomography scans were performed on third-generation equipment with 5-mm slice thickness. Afterwards, all patients underwent surgical and anatomopathological examinations as the gold standard procedures. RESULTS: Among 60 patients, 14 were diagnosed with subglottic extension by surgical and histopathological examination. There were three false-negative and no false-positive results from computed tomography scans. The sensitivity and negative predictive value were 100.0%. Accuracy was 95.0%, specificity was 93.5% and positive predictive value was 82.4%. CONCLUSIONS: Computed tomography could serve as a powerful auxiliary method for staging laryngeal and hypopharyngeal cancer. However, precautions should be taken in analyzing computed tomography scan data, because vegetating lesions may also be projected into the subglottic compartment, without real involvement of the subglottis, which may cause a false-positive result.

Critical Evaluation of Impedance Phlebography for the Diagnosis of Deep Vein Thrombosis

1974 ◽  
Vol 31 (02) ◽  
pp. 273-278
Author(s):  
Kenneth K Wu ◽  
John C Hoak ◽  
Robert W Barnes ◽  
Stuart L Frankel
Keyword(s):  
Deep Vein Thrombosis ◽  
False Positive ◽  
False Negative ◽  
Critical Evaluation ◽  
Original Method ◽  
Vein Thrombosis ◽  
Negative Results ◽  
False Negative Results ◽  
Deep Vein ◽  
Positive Results

SummaryIn order to evaluate its daily variability and reliability, impedance phlebography was performed daily or on alternate days on 61 patients with deep vein thrombosis, of whom 47 also had 125I-fibrinogen uptake tests and 22 had radiographic venography. The results showed that impedance phlebography was highly variable and poorly reliable. False positive results were noted in 8 limbs (18%) and false negative results in 3 limbs (7%). Despite its being simple, rapid and noninvasive, its clinical usefulness is doubtful when performed according to the original method.

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