Fig. 2.

Acetic acid stained reflectance confocal mosaic (a) shows nodular and infiltrative BCCs and (b) corresponding H&E stained frozen histology. Tiny strands of infiltrative BCC (red boxed area) are difficult to identify and differentiate from thin bright strands of collagen fibres (yellow dotted circles) at low magnification in contrast to the nodular BCC (red arrow) that appears distinct (a). (c) Digital zooming to $30\times$ magnifications is often required to identify the tiny strands of infiltrative BCC. The epidermal margin (green arrows) is seen. Scale bars: $\mathrm{A}=1\mathrm{mm}$; $\mathrm{C}=150\mu \mathrm{m}$. Figure reproduced with permission, courtesy of Wiley.¹⁵