THORNWALDT’S CYST
A DEPRESSION IN THE NP THAT IS A REMNANT OF THE POUCH OF LUSCHKA–BURSA PHARYNGEUS (UNDER ADENOID)—-A FAILURE OF NOTOCHORD REGRESSION—LINED BY RESP EPITHELIUM—PRIMARILY Asx– MAY HAVE PERSISTENT PND, HA, HALITOSIS, DYSGEUSIA—–PEAKS AGE 15-30
THORNWALDT’S DISEASE = INFXN OF THORNWALDT’S CYST(BURSA PHARYNGEUS)
RATHKES POUCH CYST
NOT A TRUE NEOPLASM
USUALLY IN PARS INTERMEDIA
CUBOID EP LINED CYST
FILLED WITH A MOTOR OIL LIKE FLUID
NP TERATOMA
PRIMARILY A DERMOID
PRIMARY LOCATION IS H&N = NP
MOST RARE IS EPIGNATHIS