Fig. 1.

Clinical and genetic findings in a 27-year-old male patient with basal cell nevus syndrome but without basal cell carcinoma. (A) Physical examination revealed multiple palmoplantar pits (dotted circles). (B) Head computed tomography scan demonstrating one odontogenic keratocyst in the left maxillary bone (arrow) and calcification of the falx cerebri (arrowhead). (C) The aCGH study identified a homozygous deletion, indicated by the rectangular box, spanning 9q22.32-q22.33 (chr9:97,320,223-100,506,985), encompassing the entire PTCH1 gene region (chr9:98,205,262-98,279,253).