Endolymphatic Sac Tumor

Bisceglia M , D'Angelo VA , Wenig BM. Endolymphatic sac papillary tumor (Heffner tumor). Adv Anat Pathol 2006;13(3):131–8.

el-Naggar AK , Pflatz M , Ordoñez NG , Batsakis JG. Tumors of the middle ear and endolymphatic sac. Pathol Annu 1994;29(Pt 2):199–231.

Heffner DK. Low-grade adenocarcinoma of probable endolymphatic sac origin. A clinicopathologic study of 20 cases. Cancer 1989;64(11):2292–302.

Michaels L. Origin of endolymphatic sac tumor. Head Neck Pathol 2007;1(2):104–11.