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. 2021 Aug 16;16(2):375–387. doi: 10.1007/s12105-021-01367-9

Table 4.

Immunohistochemistry in differential diagnoses of laryngeal neuroendocrine tumor (NET, G2) [8, 10, 18, 19]

Antibody NET G2 SCC CCC MyoECa MEC ADCa Melanoma PGL MTC Plasmacytoma Glomus
AE1/AE3  +   +   +   +   +   +   + 
Synaptophysin  +  _  +   + 
Chromogranin  +  _  +   + 
INSM1  +  _  +   + 
CD56  +  _  +   + 
p40  +  +   +  +   +   +  + 
GATA3  + 
Calcitonin  ±   + 
CD99  ∓ 
TTF1  ∓   ± 
SMA  +   + 
MUM1  + 
S-100  +   + a  +   + ; STC
Melan A; HMB45  + 

NET G2 Neuroendocrine tumor, grade 2, SCC Squamous cell carcinoma, CCC Hyalinizing clear cell carcinoma, MyoECa Myoepithelial carcinoma, MEC Mucoepidermoid carcinoma, ADCa Adenocarcinoma, PGL Paraganglioma, MTC Medullary thyroid carcinoma, STC Sustentacular cells

 +  + : strong, diffuse

 ∓ : more frequently negative than positive

 ± : more frequently positive than negative

aIn the Salivary Polymorphous adenocarcinoma type