Blood flow to the promontory in cochlear otosclerosis

Clinical Otolaryngology : Official Journal of ENT-UK ; Official Journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery
T NakashimaS Naganawa

Abstract

To investigate Schwartze sign with measurements of blood flow to the promontory in patients with cochlear otosclerosis. Prospective clinical study. Tertiary referral centre. Five patients with cochlear otosclerosis and five control subjects. Significant decalcification around the cochlea was observed by computed tomography (CT) in patients with cochlear otosclerosis. However, no recognizable lesion was observed at the oval window in two patients. One patient had mixed hearing loss and four patients had sensorineural hearing loss without an air-bone gap. The relationship between CT findings and the presence or absence of Schwartze sign was investigated. Blood flow to the promontory was measured through the tympanic membrane using laser speckle flowgraphy and laser Doppler flowmetry. The Schwartze sign correlated significantly with otosclerotic lesions invading the promontory. Patients with otosclerosis exhibited elevated and pulsating blood flow to the promontory with the Schwartze sign. Computed tomography demonstrated that cochlear otosclerosis can exist without the oval window lesion. Schwartze sign can be used as a sign of the otosclerotic invasion to the promontory. The reddening of the Schwartze sign is likely due to incre...Continue Reading

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Citations

Sep 16, 2006·Current Opinion in Otolaryngology & Head and Neck Surgery·Konstantina M Stankovic, Michael J McKenna
Feb 5, 2016·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Shinji NaganawaMitsuru Ikeda
Jul 1, 2011·International Journal of Otolaryngology·Toshiaki FurutaTsutomu Nakashima
Aug 3, 2018·Head and Neck Pathology·Amarpreet SabharwalMichelle D Williams
Jul 2, 2008·The Journal of Bone and Joint Surgery. British Volume·O LevyS Copeland
May 5, 2018·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Robert MeertensWilliam David Strain
Oct 14, 2020·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·Alexander L LuryiChristopher A Schutt

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