Xeroderma pigmentosum variant: squamous cell carcinoma of the lower lip harboring exon 11 mutation of POLH - Pereira, Thaís dos Santos Fontes; Castro, Ligia Pereira; Menck, Carlos Frederico Martins; Maia, Maria Helena Thomaz; Souza, Lucas Lacerda de; Fonseca, Felipe Paiva; Pontes, Helder Antônio Rebelo; Pontes, Flavia Sirotheau Correa; Gomez, Ricardo Santiago (Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, 2021)