SCCNU	squamous cell carcinoma of the nail unit
HPV	human papillomavirus
RCM	reflectance confocal microscopy
LC-OCT	line-field confocal optical coherence tomography
IHC	immunohistochemistry
EMA	epithelial membrane antigen
NGS	next-generation sequencing
MRI	magnetic resonance imaging
FNAC	fine-needle aspiration cytology
PET-CT	positron emission tomography–computed tomography
AJCC	American Joint Committee on Cancer
BWH	Brigham and Women’s Hospital
PNI	perineural invasion
EADO	European Association of Dermato-Oncology
MMS	Mohs micrographic surgery
WLE	wide local excision
RT	radiation therapy
ICIs	immune checkpoint inhibitors
miRNAs	microRNAs