Nail Unit Blue Nevi: A 11-Case Series and Review of the Literature.

Background: Blue nevus of the nail apparatus is a rare entity and only isolated cases are reported in the literature.

Objective: The aim of this study was to better characterize blue nevus at the nail unit.

Methods: Retrospective analysis of all nail unit blue nevi from the Nail Group of the French Society of Dermatology was compared to the literature.

Isolated nail lichen planus: An expert consensus on treatment of the classical form.

Lichen planus is a benign inflammatory disorder of unknown etiology that may affect the skin, mucosae, scalp, and nails. When the nails are affected, it may lead to permanent destruction with severe functional and psychosocial consequences. Therefore, prompt diagnosis and early treatment are essential, even in mild cases.

In situ nail unit melanoma: epidemiological and clinic-pathologic features with conservative treatment and long-term follow-up.

Background: Nail unit melanoma (NUM) is a rare melanoma variant, usually associated with a poor prognosis because of a delayed diagnosis. Few data are available concerning the management and long-term outcome of in situ NUM.

Objective: To use a large cohort to provide comprehensive patient data and long-term follow-up information.