A Rare Case of Endolymphatic Sac Tumour: Clinicopathologic Study and Surgical Management

Table 1

Immunohistochemical staining profile of ELST.

Immunohistochemical staining profile of ELST
Cytokeratins (types 5, 6, 8, 17, and 19)	+
Epithelial membrane antigen (EMA)	+
Vimentin	+
Periodic acid-Schiff	+
S100 protein	+/−
Glial fibrillar acid protein (GFAP)	+/−
Chromogranin A	+/−
Synaptophysin	+/−
Neuron specific enolase (NSE)	+/−
Thyroglobulin	−
Calponin	−
Transthyretin	−
Calretinin	−