DTC	differentiated thyroid cancer
PTC	papillary thyroid cancer
FTC	follicular thyroid cancer
MTC	medullary thyroid cancer
ATC	anaplastic thyroid cancer
RET	rearranged during transfection
ROS	reactive oxygen species
RA	retinoic acid
RAR	retinoic acid receptor
CSCs	cancer stem cells
EGF	epidermal growth factor
TGF-α	transforming growth factor alpha
TKI	tyrosine kinase inhibitor
PDT	photodynamic therapy
PS	photosensitizers
HIF-1	hypoxia inducible factor-1
HRE	hypoxia response element
MMP-9	matrix metallopeptidase 9
COX-2	cyclooxygenase-2
ERK	extracellular signal-regulated kinase
EMT	epithelial-mesenchymal transition
NF-κB	nuclear factor-κB
EGCG	epigallocatechin-3-gallate
NIS	Na+/I-symporter
Hsp	heat shock protein
EGFR	epidermal growth factor receptor