On November 14th, the 2014 seminar on complicated clinical cases of ENT was held by ENT Department in PUTH in Beijing. The seminar attracted well-known ENT specialists, scholars all over the nation and more than 170 ENT fellows from 30 hospitals in North China. Yan Yan, Zhu Li, Ma Furong, doctors from ENT Department in PUTH shared cases respectively.

Translated by Lin Pingping, proof by Zhang Yi