Fig. 2.

Preablation (a) and postablation (b) confocal mosaics of discarded Mohs tissue, and en face hematoxylin and eosin-stained histology section postablation (c). The red arrows indicate the location of BCC tumor. The presence and location of residual BCC tumor in the postablation mosaic is confirmed by the histology. There are two ablation spots. The spot on upper right was treated with a single pass with $25\mathrm{J}/{\mathrm{cm}}^2$, and the lower left four passes with $6.3\mathrm{J}/{\mathrm{cm}}^2$. Each spot was thus treated with the same total fluence. Shown in (d) is a magnified view of inset region in (a), showing preablation bright nuclear morphologic detail of nodular BCC. Shown in (e) is a magnified view of the inset region in (b), showing postablation nuclear morphologic detail of residual BCC. Shown in (f) is a magnified view of the inset region in (c), showing the corresponding postablation residual BCC in the histology.