Dermoscopy Presented By : Dr H Mozayyeni هوالشافی Dermoscopy Presented By : Dr H Mozayyeni

Dermoscopy may show melanocytic naevi to be composed entirely of: Cobblestone pattern (dermal naevi) Aggregated globules Pigment network (reticular pattern) Homogeneous/amorphous (structureless) pigmentation

Time-related dermoscopic patterns of reticular nevi Time-related dermoscopic patterns of reticular nevi. In young adults, reticular nevi typically reveal a peripheral rim of brown globules as a sign for growth (symmetric enlargement). In adults, this rim is no longer present and reticular nevi display a reticular pattern as the only dermoscopic feature. In the elderly, reticular nevi tend to progressively involute.

Reticular pattern

Central hyperpigmentation

Reticula pattern , Central hypopigmentation

Reticular pattern & centeral hyperpigmentation

Reticular pattern , regular Holes

Globular pattern

Cobble stone pattern,globule

Structurless area,

Globular–reticular nevi are composed of a central dermal component with globules surrounded by a regular reticular network

Example of globular-reticular nevus exhibiting in the center predominantly structureless hypopigmentation with a few globules.

The peripheral rim of small brown globules is indicative for a growing nevus.

This CMN has a reticular pattern with hypopigmented structureless areas in the center. It also has hypertrichosis. Although globules in CMN tend to be aggregated and brown in color, on rare occasions one can fi nd nonaggregated globules with a blue color, as is evident in this CMN

CMN with globules throughout the lesion and distributed in dense concentration.

CMN with globules present centrally and surrounded by a reticular network. Note the presence of milia-like cysts, which can often be seen in CMN

CMN with cobblestone-like globules CMN with cobblestone-like globules. Note the hypertrichosis, which is frequently seen in CMN.

CMN with target network with globules

CMN with milia-like cysts

No pigment network, and the presence of large blue-gray ovoid nests and multiple bluegray globules(BCC)

Dermoscopy image showing multiple blue-gray non-aggregated globules.

A pigmented lesion lacking a pigment network but possessing multiple leaf-like areas.

Leaf like structure

Spoke-wheel-like areas

Multiple arborizing blood vessels

Dermoscopy reveals multiple milialike cysts and a few comedo-like openings

lack of network within the lesion , comedo-like openings, and milia-like cysts

hairpin blood vessels, milia-like cysts

cerebriform pattern, which is created by the ridges and sulci.

Fat finger like