Sangalang, V E Papillary neoplasms (Heffner's tumors) of the endolymphatic sac. [electronic resource] - The Annals of otology, rhinology, and laryngology Jul 1996 - 584 p. digital Publication Type: Case Reports; Comment; Letter ISSN: 0003-4894 Subjects--Topical Terms: AdultCarcinoma, Papillary--pathologyEar Neoplasms--pathologyEndolymphatic Sac--pathologyGlioma--pathologyHumansMaleNeoplasm InvasivenessThyroid Gland--pathologyThyroid Neoplasms--pathology