Moths (benign) are benign skin lesions, which result from the multiplication of cutaneous melanocytes (pigment cells), says Dr. Iuliana Lupu, a primary dermatologist.
Molecules may be present from birth or appear immediately afterwards (congenital nevi) or may occur throughout life (nevi acquanditi). The appearance of new moles throughout life is closely related to exposure to the sun and can be reduced by aggressive photo-protection from childhood.
Moles. Congenital nevi with average dimensions (1.5-19.9cm) and large & gt; 20cm were associated with a risk of developing melanoma over the course of their life by up to 10%. 50% of melanomas in these patients occur in the first 3-5 years of life. If the nevul is too large to be removed, it will be monitored and the surgery will be postponed until changes occur.
Acquired moles are in most cases common nevi (flat flat injuries and small size) or skin nevi dermatitis or skin hyperpigmentation located especially in the face and scalp.
When is it necessary to have a dermatological check for the checkup of the moles?
Melanoma is a highly aggressive and extremely aggressive malignant lesion of the skin and mucosa. In the early stages and where high degrees of cure can be obtained, it may have the clinical appearance of a mole. In addition, melanoma occurs in 30% of cases on a preexisting nev.
That's why any newly formed mole (especially after age 30), which changes its size, shape, structure or color, which becomes symptomatic (bleeds, covers or pruritus) or presents ABCDE risk criteria should be examined by the dermatologist.
Patients with an increased number of moles should be examined periodically dermatoscopically, as well as those who have suffered excessive sun exposure.
What are ABCDE criteria? What ABCDE means in the diagnosis of moles
ABCDE criteria are an acronym for signs and symptoms suggestive of melanoma:
A (Asymmetry): If we draw a line through the middle of the lesion, the two halves are not symmetrical. A benign lesion is oval and symmetrical
B (Borders): Melanomas often have irregular shape, with zig-zag or zig-zag edges. A common nev has smooth and regular edges.
C (Colors): melanoma shows a variety of shades (brown, black, red, pink, white, blue). A harmless mole is generally a uniform brown color
D (Diameter): More than 6mm in diameter
E (Evolution) – the first sign to look for; any bump that grows in diameter, which was once flat or slightly bulging and rising in height, covered with shedding, ulceration or bleeding should be immediately examined by the dermatologist.
Not all the moles that change are melanoma, says the doctor dermatologist Iuliana Lupu. Moles can also change after exposure to sunlight or in the task (when darker and darker in size), they can be surrounded by a dark area (nev Sutton) or reddish halo.
Onset of melanoma is completely asymptomatic; in time may feel itchy, dysaesthesia or pain.
The "ugly duckling sign" is the method of detecting melanoma based on the concept that melanomas look different from the surrounding moles and draw attention to a first examination.
The patient's benign nevi resembles one another, while a potential melanoma is a lesion that, at a certain moment, looks and evolves differently in comparison with them. This method can be extremely useful in detecting nodular melanoma that does not show the classic ABCDE signs. Also not all melanomas are black-brown; there is acromatic melanoma.
How is the melanoma screening done?
Screening for melanoma is done primarily by monthly self-examination of the entire body.
Melanoma occurs on any portion of the skin and mucous membranes (including areas normally covered) but shows a predisposition for the upper thoracic area. In women, it also occurs frequently in the lower limbs. Patients without risk factors should be examined annually by the dermatologist and those with risk factors for melanoma every 3 or 6 months.