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Laterality in collapse of the piriform sinus on computed tomography Akira Baba 1,2 1Department of Radiology The Jikei University School of Medicine Keyword: CT , 下咽頭 , 梨状窩 , 虚脱 pp.163-166
Published Date 2019/2/10
DOI https://doi.org/10.18888/rp.0000000752
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Routine CT sometimes showed predominant of laterality in piriform sinus collapse. We retrospectively evaluated CT images of 200 patients with pharyngolaryngeal symptoms who underwent endoscopy revealing no significant findings. CT images didn’t show definite focal abnormality. CT demonstrated left predominance of piriform sinus collapse(131 cases, 65.5%), and there was a few case showing right predominance of it. Laryngoscope mostly demonstrated no laterality in piriform sinus collapse(175 cases, 94.5%). There was no significant correlation between laterality in piriform sinus collapse and age, sex and kinds of symptoms. Hence, careful evaluation may be required to search focal abnormality when detecting right-side predominance of piriform sinus collapse on CT.


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