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Thymic Choristoma in Tympanic Cavity Presenting as Reddish Intratympanic Mass
Dept. of Otolaryngology, Institute of Health Sciences, School of Medicine, Gyeongsang National Univ.
Hyunmo KANG, Hyunmo KANG,Dong Gu HUR
Ectopic thymus is an very rare etiology of middle ear mass. We report a care of ectopic thymus in tympanic cavity presenting as reddish intratympanic mass. For differential diagnosis, an excisional biopsy was performed. On microscopic examination, the mass was composed of ectopic thymic tissue with Hassall¡¯s corpuscles. This case report is accompanied by a short review of the relative literature


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