Acquired progressive lymphangioma.

Acquired progressive lymphangioma is a very rare disorder that presents in childhood or early adolescence as a lymphatic proliferation that gradually enlarges. It most commonly involves an extremity and is typically characterized as an indurated plaque that may be brownish-red, violaceous, or yellow. We report the case of a 15-year-old boy with a 10-year history of acquired progressive lymphangioma on the sole.

Type 1 segmental manifestation of Hailey-Hailey disease.

Two types of mosaic manifestations can be distinguished in autosomal dominant skin disorders. A type-1 mosaicism reflects a localized postzygotic mutation in an otherwise normal embryo. This mutation leads to a localized population of heterozygous cells, resulting in segmental disease.

Acrokeratoelastoidosis.

Acrokeratoelastoidosis is a genodermatosis characterized by firm papules or plaques on the sides of the hands and feet. Although poorly understood, the lesions may result from an abnormality in the secretion or excretion of elastic material by fibroblasts in the dermis. In this report, we will present a patient with this rare condition and review the clinical and histopathologic features, cause, and differential diagnosis.

Tumid lupus erythematosus.

Tumid lupus erythematosus (TLE) is a variant of cutaneous lupus erythematosus. Most patients who present with these skin lesions are young women. The condition clinically resembles polymorphous light eruption, systemic lupus erythematosus (SLE), reticulated erythematous mucinosis, or gyrate erythema.