ALK	Anaplastic lymphoma kinase
CT	Computed tomography
DFM	Desmoid fibromatosis
DOG1	Discovered on GIST-1
EBV	Epstein–Barr virus
EBER	EBV-encoded small RNA
EFDCS	Epstein–Barr virus-positive inflammatory follicular dendritic cell sarcoma
EIMS	Epithelioid inflammatory myofibroblastic sarcoma
ERMS	Embryonal rhabdomyosarcoma
FDC	Follicular dendritic cell
FISH	Fluorescence in situ hybridization
RMS	Embryonal rhabdomyosarcoma
GIST	Gastrointestinal stromal tumor
H&E	Hematoxylin and eosin
HPF	High-power field
IFP	Inflammatory fibroid polyp
IGSD	Immunoglobulin G4-related sclerosing disease
IHC	Immunohistochemistry
ILPS	Inflammatory leiomyosarcoma
IPT	Inflammatory pseudotumor
ISH	In situ hybridization
IWDLPS	Inflammatory well-differentiated liposarcoma
KIT	KIT proto-oncogene, receptor tyrosine kinase
LGMS	Low-grade myofibroblastic sarcoma
MIFS	Myxoinflammatory fibroblastic sarcoma
MIMS	Myxoid inflammatory myofibroblastic sarcoma
MRI	Magnetic resonance imaging
MSA	Muscle-specific actin
MYOD1	Myogenic differentiation 1
NCCN	National Comprehensive Cancer Network
NF	Nodular fasciitis
NGS	Next-generation sequencing
PAIMT	Pregnancy–associated inflammatory myofibroblastic tumor
PDGFRA	Platelet-derived growth factor receptor alpha
PMP	Pseudosarcomatous myofiboblastic proliferation
SDHB	Succinate dehydrogenase subunit B
SMA	Smooth muscle actin
STR	Short tandem repeat
TKI	Tyrosine kinase inhibitors
WHO	World Health Organization