Dermoscopy and Electron Microscopy DERMOSCOPY- Also known as skin surface microscopy, dermatoscopy, and/or epiluminescence microscopy
- Pigmentation in lesion due to either melanin or hemoglobin (vasculature)
- Melanin may be found within melanocytes, keratinocytes, melanophages, or sequestered tumors cells (i.e., pigmented BCC); color depends on depth of melanin in skin
- Black color: melanin within stratum corneum or upper epidermis
- Brown color: melanin at dermoepidermal junction
- Gray or blue color: melanin within dermis
- Location-specific features
- Face: follicular openings may create pseudonetwork (follicular openings form hypodense “holes” of network)
- Volar: nevi on palmoplantar skin with different pattern than other areas of the body; most common is parallel furrow pattern followed by lattice-like and fibrillar pattern
|
