鼻咽癌（T1）-鼻内窥镜的外观与正常空间

                               
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The cancer involved area (higlighted by area within yellow dashed line) in the first part of this video was compared with normal patient with clear fossa of Rosenmuller (area within green dashed line) in the latter part of this movie.  Different filtering/optical modes of SPICE-endoscopy by Karl Storz were highlighted. (R - roof of nasopharynx, V - vomer)