A major role in the study of moles of the patient is assigned to differential diagnosis. Still, the papillomatous nevus has some similarities with many other neoplasms, and if traumatized, it can strongly resemble melanoma.
The greatest similarity of the warty nevus is with the papilloma (hence one of the names of the birthmark). Papilloma is also a benign neoplasm, but the cause of the appearance of growths on the skin is the papilloma virus, which for a long time may be in the body incognito.
Appearance of neoplasms in papillomatosis of the skin differs little from the papillomatous nevus. These are the same tubercles on a thick base (sometimes on a thin stem), which can have a color from beige to light brown. They can be localized in the groove and perineum, on the mucous membranes, on the neck and eyelids, in the axillary region. The size can range from tiny pointed warts to outgrowths of about 2 cm in diameter.
What is the difference between papilloma and papillomatous nevus? To begin with, papillomatosis is an acquired disease that develops as a result of the virus entering the human body and its subsequent activation. Papillomatous nevus is an innate neoplasm that can become visible a little later as it grows.
The color of the papilloma usually does not differ from the color of the human skin, while the warty nevus can have different shades: flesh, pink, red, brown, purple, black.
The papillomatous nevus, though often irregular in shape, is a symmetrical neoplasm with clear boundaries. There are no such limitations for the papilloma.
Inside the nevus, a certain amount of melanocytes are accumulating, making the new growth more dense than the rest of the skin. Papilloma, on the contrary, is very soft with a gentle surface.
For papillomas on the skin soreness, itching or burning is considered normal. Such a symptomatology on moles can indicate tissue damage, nevus cell degeneration, and infection.
The pigmented type of the papillomatous nevus has a certain similarity with the borderline pigment nevus. It is a birthmark up to 1 cm in size with a bright shade (gray, brown or black) and a smooth surface. It is characterized by an intensification of the intensity of the color closer to the edge of the mole, the absence of hairs, slow growth. It is also an innate neoplasm, which, unlike the papillomatous nevus, is considered melanoma-dangerous.
Galoneuvus (or Nevton Settona ) also externally can be similar to a papillomatous birthmark of a pigmented type. But this neoplasm has a distinctive feature - around it a rather wide border of a skin of a lighter shade is formed. This rim is much lighter than the mole itself, but also the rest of the human skin. It can be either single or multiple growths with predominant localization in the back area.
Halonovus as well as papillomatous nevus rarely develops into melanoma, but if such neoplasms are much likely that the patient will have other pathologies, such as inflammatory thyroid disease (thyroiditis), which often causes hypothyroidism (organ failure), a violation of skin pigmentation , called "vitiligo", or secretly leaking skin cancer.
Papillomatous nevus pigmented type can be quite large and then it becomes like a giant pigment nevus. Giant nevus is also considered a benign congenital neoplasm, but due to its size (from 20 cm in diameter), it is highly prone to traumatization, which is why it is considered melanomo dangerous. For example, in infants, in 5% of cases, the birthmark degenerates into melanoma.
Another convex neoplasm, which may have a thin or fairly thick stem, is called fibroepithelial nevus or fibropapilloma. Such neoplasms can often be found on the face and body (especially the armpits), but sometimes they are also found on the skin of the upper and lower extremities. This is a benign form of nevi, which can be both congenital and acquired, appearing at different ages.
The size of the neoplasm can range from 2 mm to 2 cm, although there are also larger growths. They have a spherical shape, a fairly smooth surface and soft to the touch. It is possible to grow hairs on the surface of the build-up. The color of fibropapilloma can also be different, but in general it is usually lighter than pigmented nevi. Most often, fibropapillomas are found on the face and body of the weaker sex.
Papillomatous nevus, which may have an irregular shape, somewhat heterogeneous color and different sizes, must be differentiated from the rare form of moles, called dysplastic nevus. And although this form of neoplasm is diagnosed only in 4-5% of cases, it is considered quite dangerous and is close to the precancerous state.
If the disease has a rare hereditary nature, then there can be several such neoplasms on the body. And even if some members of the family do not show this kind of moles, they should still be examined regularly by a dermatologist and, if necessary, by an oncologist.
Acquired disease usually manifests itself as single neoplasms (sporadic type). With papillomatous nevus may be similar in appearance:
- a typical form (a new growth with an elevation in the center of various shades of brown of different shapes),
- keratolic form (excrescence, having a hilly surface, light brown hue and large dimensions),
- erythematous form (large pink mole).
In contrast to the papillomatous nevus, the dysplastic form of moles, which is characterized by bizarre forms and uneven coloration, is very prone to malignant cells and must be constantly monitored by a physician. Ideally, such moles are best removed immediately, without waiting for their degeneration into a cancerous tumor.
Papillomatous nevus in some cases may have a bluish or violet hue, which resembles a blue nevus (the blue birthmark of Jadasson-Tiche). Sometimes such neoplasms from blue to almost black can rise above the skin in the form of a nodule up to 1 cm in diameter (although there are instances 2-3 times larger). The favorite places of the blue nevus are the lower leg and forearm, the hands and feet (on the back), buttocks, but similar specimens of moles can also be found on the face, neck, trunk or in the lips.
The blue nevus is quite dense to the touch, but its tissues remain elastic, and the surface is smooth. Hair on such birthmarks do not usually grow. The papillomatous pigment nevus is more similar to the cellular form of the blue birthmark with a dark color, rather large size and often uneven surface.
Despite the fact that in melanoma such tumors rarely pass, they are considered melanomopods and require regular monitoring.
We listed only some of the neoplasms on the skin with which it is worthwhile to differentiate the papillomatous birthmark. In fact, there are a lot more of them, and everyone can conceal a certain danger in themselves.
As you can see, the papillomatous nevus is far from the only new type of this type that can appear on the human body. And unlike the warty birthmark, some of them have a rather high risk of degeneration into a cancerous tumor. The similarity of the examined neoplasm with others causes certain difficulties in conducting self-diagnosis, so it is very difficult for a person who is far from dermatology to accurately diagnose. Such responsible work should be entrusted to professionals.
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