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Differential diagnosis of Sinonasal Tumor
Feature
ENB SNUC SNEC
P i
i bl
f
bl
rognos s
Necrosis
N l
l i
var a e
+
poor
+++
avora e
-
uc ear anap as a
Mitoses
V l
i
i
+
variable
+++
+++
-
variable
NR
ascu ar nvas on
Secretory granules
++
+++
+++
+
+++
Keratin
S100
+
++
+++
-
++
++
NSE
+++ variable
+++
25
Frierson Am J Surg Pathol 1986
Ejaz Adv Anat Pathol 2005