Speckled lentiginous nevus

Speckled lentiginous nevus (SLN), also known as nevus spilus, is a type of skin lesion that is characterized by a background of hyperpigmented skin, speckled with darker macules or papules. It is a type of birthmark that is present at birth or appears in early childhood.

Etiology

The exact cause of speckled lentiginous nevus is unknown. However, it is believed to be a result of a genetic mutation that occurs during embryonic development. This mutation leads to an increased production of melanin, the pigment that gives color to the skin, hair, and eyes.

Clinical Presentation

Speckled lentiginous nevus typically presents as a light brown to dark brown patch of skin that is speckled with darker spots. The size and shape of the nevus can vary greatly, ranging from a few millimeters to several centimeters in diameter. The nevus can appear anywhere on the body, but is most commonly found on the trunk, arms, and legs.

Diagnosis

Diagnosis of speckled lentiginous nevus is typically made based on the clinical appearance of the lesion. In some cases, a skin biopsy may be performed to confirm the diagnosis and rule out other conditions, such as melanoma.

Treatment

Treatment for speckled lentiginous nevus is typically not necessary, as the condition is benign and does not cause any symptoms. However, in some cases, treatment may be recommended for cosmetic reasons or if the nevus changes in appearance. Treatment options may include laser therapy, cryotherapy, or surgical removal.

Prognosis

The prognosis for individuals with speckled lentiginous nevus is generally good. However, there is a small risk that the nevus could develop into melanoma, a type of skin cancer. Therefore, individuals with a speckled lentiginous nevus should have regular skin checks to monitor for any changes in the appearance of the nevus.

See Also

• Melanoma
• Skin lesion
• Birthmark
• Melanin
• Skin biopsy