Hyperplasia of lymphoid structures in the hypopharynx: a case report.
BACKGROUND
Ectopic tonsillar tissue simulating a benign tumor of the hypopharynx is described in this report.


METHODS
We report the case of a 79-year-old Japanese woman with globus sensation. Because clinical observation revealed benign features, tumor tissue was laryngoscopically resected. From the pathological features, for example, existence of germinal center, lymphoid tissue, and crypt involving lymphoepithelial symbiosis, we diagnosed that the lesion was a hyperplasia of ectopic tonsillar tissue.


CONCLUSIONS
Although ectopic tonsillar tissue of the hypopharynx is relatively rare, it should be kept in mind during differential diagnosis.
Department of Otorhinolaryngology, Ohtawara Red Cross Hospital, 2-7-3 Sumiyoshi-cho Ohtawara City, Tochigi 324-8686, Japan. yuh_baba@hotmail.com.
Yuh
Y
Baba
Yasumasa
Y
Kato
Kaoru
K
Ogawa