Level 2 Criteria for BCC Arborizing blood vessels

Level 2: Criteria for BCC • • Arborizing blood vessels (telangiectasias) Leaf-like areas Large blue-gray ovoid nests Multiple blue-gray non-aggregated globules Spoke-wheel-like structures Shiny white areas Ulceration In the absence of a pigment network, these criteria are highly suggestive of BCC.

Pigmenmted BCC • Arborizing telangiectasia (arrows) • Ulceration (arrowheads) • Multiple leaf-like areas (asterisks).

Nodular pigmented BCC • Leaf-like areas • Multiple blue-gray ovoid nests (arrows) • A telangectasia in the right part of the lesion.

• Multiple blue-gray nonaggregated globules (arrows) • Blue-gray ovoid nests, ulceration (asterisks) • Arborized telangiectasia (Arrowheads).

Leaf-like areas

Multiple spokewheel-like structures

Multiple blue gray ovoid nests

Multiple blue-gray globules

Level 3: Criteria for SK • • Multiple milia-like cysts Comedo-like openings Moth-eaten borders Network-like structures “Fissures and ridges” ( gyri and sulci) Fat finger-like structures Light brown fingerprint-like structures

Fat-fingers • They are linear and wide dermoscopic structures corresponding to ridges. • They often appear as short sausage-shaped structures. • Colors of these structures vary from tan/brown, blue and can be hypopigmented. • The name has been given to these structures because their shapes can resemble a straight finger (linear), bent finger (curvi-linear), or finger tip (oval–circular)