Clinical, dermoscopic, and histopathologic findings of hidroacanthoma simplex: a case report and literature review.

Hidroacanthoma simplex (HS) is a rare benign intraepidermal tumor that originates in the acrosyringial portion of the eccrine duct. Clinically, they are well-defined lesions, flat or verrucous brownish plaque, and can be misdiagnosed with other types of benign or malignant tumors. Dermoscopy reveals small black globules and fine scales.

A pediatric case of disseminated American cutaneous leishmaniasis in Rio de Janeiro, Brazil.

American cutaneous leishmaniasis is an infectious disease caused by the protozoa of the genus Leishmania. Clinical manifestations vary according to the virulence of the parasite speciesand the host's immune response. We report a case of a 2-year-old girl vertically exposed to HIV who presented painful and itchy papules throughout her lower limbs with further dissemination of vegetative ulcers all over the body and scalp.