Nevus and lentigo of the nail matrix
|Description||This chapter describes dermoscopyThe examination of [skin lesions] with a 'dermatoscope'. This traditionally consists of a magnifier (typically x10), a non-polarised light source, a transparent plate and a liquid medium between the instrument and the skin, and allows inspection of skin lesions unobstructed by skin surface reflections. Modern dermatoscopes dispense with the use of liquid medium and instead use polarised light to cancel out skin surface reflections. of nevus of the nailsThis glossary term has not yet been described.|
|Author(s)||Luc Thomas · Amélie Boespflug|
|Responsible author||Luc Thomas → send e-mail|
|Status update||June 25, 2018|
|Status by||Ralph P. Braun|
Nail matrixThis glossary term has not yet been described. melanocyticThis glossary term has not yet been described. acquired neviThis glossary term has not yet been described. are dermoscopically characterized by their brown background coloration and the regular pattern of the longitudinal micro-linesstreaksThis glossary term has not yet been described.. Congenital neviis a type of melanocytic nevus (or mole) found in infants at birth. This type of birthmark occurs in an estimated 1% of infants worldwide; it is located in the area of the head and neck 15% of the time. may exhibit atypical patternsThis glossary term has not yet been described. and their differentiation from melanomaThis glossary term has not yet been described. is very difficultneeding much effort or skill to accomplish on the basis of clinical and dermoscopical features. Therefore careful follow-up is mandatory.
Blue nevusis a type of melanocytic nevus that clinically and dermoscopically will appear blue of the nail unit
Blue nevus of the nail unit is also a very rare entity. Dermoscopically, it corresponds to a blue proximal spot which is stable over time. In our view, the diseaseThis glossary term has not yet been described. is rare enough to justify surgical exploration of the nail matrix and excision of the lesion.
ReferencesThis is material contained in a footnote or bibliography holding further information.
- Ronger S, Touzet S, Ligeron C et al. (2002) Dermoscopic examination of nail pigmentation. Arch Dermatol 138(10): 1327–33
- Sendagorta E, Feito M, Ramírez P, Gonzalez-Beato M, Saida T, Pizarro A. (2010) Dermoscopic findings and histological correlation of the acral volar pigmented maculae in Laugier–Hunziker syndrome. J Dermatol 37(11): 980–4.
- Gencoglan G, Gerceker-Turk B, Kilinc-Karaarslan I, Akalin T, Ozdemir F. (2007) Dermoscopic findings in Laugier–Hunziker syndrome. Arch Dermatol 143(5): 631–3.
- Causeret AS, Skowron F, Viallard AM, Balme B, Thomas L. (2003) Subungual blue nevusis a type of melanocytic nevus that clinically and dermoscopically will appear blue. J Am Acad Dermatol 49(2): 310–12.