The Experts below are selected from a list of 264 Experts worldwide ranked by ideXlab platform
Lin Guo - One of the best experts on this subject based on the ideXlab platform.
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Value of prenatal ultrasound in diagnosis of fetal External Ear deformity
Journal of Ultrasound in Clinical Medicine, 2009Co-Authors: Lin GuoAbstract:Objective To explore the sonogram features and application value of ultrasound in the diagnosis of fetal External Ear deformity.Methods Sonograms of 13 cases of fetal External Ear deformity were analyzed retrospectively,and the missed diagnosis and misdiagnosis causes were analyzed.Results There were 7 cases of fetal External Ear deformity examined by prenatal ultrasonography,and 6 cases were missed.While in 13 cases,there were 9 cases were simple External Ear deformity, and 4 cases were multi - system deformity.There were 8 cases with polyhydramnios.10 cases were karyotype analyzed in chromosome,there were 2 cases of 21-Three,and 3 cases of 18-Three.Conclusion Fetal External Ear deformity has its own particular sonogram appEarance,and prenatal ultrasound can provide more information for the diagnosis of prenatal fetal anomaly.
A Wright - One of the best experts on this subject based on the ideXlab platform.
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keratosis obturans and External Ear canal cholesteatoma how and why we should distinguish between these conditions
Clinical Otolaryngology, 2004Co-Authors: R Persaud, D Hajioff, M S Thevasagayam, M Wareing, A WrightAbstract:Keratosis obturans and External Ear canal cholesteatomas have been considered as separate entities for the last 20 yEars, after being regarded as variations of the same disease for at least 87 yEars. While both disorders are distinct, they do have some overlapping characteristics which may make it difficult to reach a definite diagnosis. This review explores the diagnostic dilemmas which may arise, and discusses the classification, aetiology, pathogenesis and management of these conditions. We concur that External Ear canal cholesteatoma and keratosis obturans are different conditions and conclude that the presence of osteonecrosis and focal overlying epithelial loss are the most reliable features favouring the diagnosis of External Ear canal cholesteatoma over keratosis obturans. Furthermore, whilst keratosis obturans can be managed successfully by regular aural toilet, External Ear canal cholesteatoma may require surgical intervention depending on the extent of the disease.
Haitao Ran - One of the best experts on this subject based on the ideXlab platform.
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Prenatal ultrasound screening for External Ear abnormality in the fetuses.
BioMed research international, 2014Co-Authors: Jun Wei, Suzhen Ran, Zhengchun Yang, Yun Lin, Jing Tang, Haitao RanAbstract:Objectives. To investigate the best time of examination and section chosen of routine prenatal ultrasound screening for External Ear abnormalities and evaluate the feasibility of examining the fetal External Ear with ultrasonography. Methods. From July 2010 until August 2011, 42118 pregnant women with single fetus during 16–40 weeks of pregnancy were enrolled in the study. Fetal auricles and External auditory canal in the second trimester of pregnancy were evaluated by routine color Doppler ultrasound screening and systematic screening. Ultrasound images of fetal External Ears were obtained on transverse-incline view at cervical vertebra level and mandible level and on parasagittal view and coronal view at External Ear level. Results. Five fetuses had anomalous Ears including bilateral malformed auricles with malformed External auditory canal, unilateral deformed External Ear, and unilateral microtia. The detection rate of both auricles was negatively correlated with gestational age. Of the 5843 fetuses undergoing a routine ultrasound screening, 5797 (99.21%) had bilateral auricles. Of the 4955 fetuses following systematic screening, all fetuses (100%) had bilateral auricles. The best time for fetal auricles observation with ultrasonography is 20–24 weeks of pregnancy. Conclusions. Detection of External Ear abnormalities may assist in the diagnosis of chromosomal abnormalities.
Steven W. Cheung - One of the best experts on this subject based on the ideXlab platform.
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Cavernous Hemangioma of the External Ear Canal
The Laryngoscope, 2002Co-Authors: Jay B. Reeck, Thomas L. Yen, Andrew Szmit, Steven W. CheungAbstract:Objective: To document the occurrence of a cavernous hemangioma of the External Ear canal and to review the relevant literature. Study Design: Case report and literature review. Methods: Review of a patient chart, imaging studies, operative report, and histologic findings. Results: A cavernous hemangioma of the External Ear canal not involving the tympanic membrane was surgically excised without complication. This is the third documented cavernous hemangioma of the External Ear canal without tympanic membrane involvement in the English literature. Computed tomography scan is invaluable to narrow the differential diagnosis. Complete removal is curative. Conclusions: Cavernous hemangioma of the External Ear canal with or without tympanic membrane involvement is a rare otologic entity amenable to surgical treatment. Temporal bone computed tomography scan imaging is an important preoperative diagnostic tool.
Sun Zhi - One of the best experts on this subject based on the ideXlab platform.
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ResEarch of expression of RANTES in rat External Ear allograft
Chongqing Medical Journal, 2002Co-Authors: Sun ZhiAbstract:Objective To study the expression of RANTES and recruitment of the related inflammatory cells in a model of rat External Ear allotransplantation.Methods Rats were divided into two groups. One was the allo transplantion group, i.e., from Lewis to BN rats.The another group was the auto grafting, i.e, from BN to BN rats. The mean survival time of rat External Ear, the pathological changes, the expression of RANTES and the recruitment of inflammatory cells were examed.Results The mean survival time of rat External Ear allograft was 7 3±0 25days. Expression of RANTES in rat External Ear allografts reached peak after operation 3 days and was apparently related with recruitment of T lymphocytes. Monocytes would also take party in rejection.Conclusion The rejection of rat External Ear allografts occurr after transplantation about 1 week, which is statistically related with expression of RANTES and recruitment of T lymphocytes and monocytes.
