5) compound nevi are hyperpigmented papules composed of nevus cells in both the epidermis and dermis and intradermal nevi are brown to flesh-colored soft papules with nevus cells confined to the dermis ( Fig. Junctional nevi are hyperpigmented macules composed of nevus cells located in the epidermis ( Fig. Most nevi are categorized by histologic subtypes: junctional, compound, or intradermal. Nevi can develop anywhere on the body and usually declare themselves by the early adult years. Age, race, and genetic and environmental factors (primarily sun exposure) all contribute to the development of nevi for any particular patient. Nevi are common benign growths, usually hyperpigmented or skin-colored macules, papules, or small plaques, probably derived from proliferating altered melanocytes (nevus cells). Options include cryotherapy, chemical peels, laser therapy, and bleaching creams containing hydroquinone. Like treatment for ephilides, treatment for lentigines is primarily for cosmetic reasons.
#Pinpoint red dots on skin colon cancer skin
Many lentigines indicate excessive photodamage and increased risk of sun-induced skin cancer. If change occurs in a lentigo (e.g., rapid growth, change in color or surface contour), a dermatologic evaluation is warranted and a biopsy may be necessary. Lentigines are benign, but they occasionally transform into lentigo maligna (superficial melanoma). Unlike ephilides, lentigines are the result of epidermal hyperplasia and of variable proliferation of melanocytes and subsequent melanization. Lentigines tend to occur on the sun-exposed skin of the face, neck, upper trunk, forearms, and hands. Usually pale tan to brown, they typically appear in white adults and increase in number with advancing age ( Fig. Lentigines are hyperpigmented macules or patches that can resemble nevi (moles). Topical bleaching creams, chemical peels, or cryotherapy can lighten ephilides of cosmetic concern.
![pinpoint red dots on skin colon cancer pinpoint red dots on skin colon cancer](http://res.cloudinary.com/demo/image/fetch/w_400,c_thumb,g_face,e_saturation:50/http://www.clevelandclinicmeded.com/medicalpubs/diseasemanagement/dermatology/common-benign-growths/images/commonbenignfig8_large.jpg)
When present in large numbers, they indicate excessive sun (photo) damage and an increased risk of sun-induced skin cancer, including melanoma, basal cell carcinoma, and squamous cell carcinoma.Įphilides are benign and harmless, and treatment is not necessary. Treatment, primarily for cosmesis, includes cryotherapy, curettage, and laser therapy.Įphilides are small, discrete, hyperpigmented macules on the sun-exposed skin of fair-complected individuals, usually redheads and blonds.Įphilides are not growths per se they represent focal increased melanin in the skin, and they tend to darken in the summer with increased sun exposure and lighten in the winter. More common in men and in patients with organ transplants, sebaceous hyperplasia lesions are often numerous, and individual papules can resemble basal cell carcinomas (particularly when accompanied by telangiectasias) or even molluscum contagiosum. Sebaceous hyperplasia is a benign enlargement of sebaceous glands surrounding a follicle characterized by small flesh-colored to yellow papules, often with a central dell, on the face of adults ( Fig. Treatment options include scissor excision, curettage, or cryotherapy, all of which can produce hypo- or hyperpigmentation. Therapy is usually not necessary unless the growths become itchy or irritated, although many people desire treatment for cosmetic reasons. 2).Īpproximately 50% of the black population has these benign growths, and women are more affected than men by a ratio of 2 : 1.
![pinpoint red dots on skin colon cancer pinpoint red dots on skin colon cancer](https://diabetestalk.net/images/KglwbyhRCIeCKIYK.jpg)
Dermatosis papulosa nigra growths are common and usually are found on the face and neck, with a particular predilection for periorbital skin of darkly pigmented persons ( Fig. If the clinical diagnosis is uncertain, a biopsy is warranted.ĭermatosis papulosa nigra is a condition of hyperpigmented, hyperkeratotic plaques similar to seborrheic keratoses and acrochordons (skin tags), both clinically and histologically. When necessary, cryotherapy (liquid nitrogen) or curettage is usually adequate. Therapy is usually not necessary unless plaques are pruritic, irritated or inflamed, or of cosmetic concern. Evaluation of such patients should include upper endoscopy and age-appropriate cancer screening. The sudden eruption of many, often pruritic seborrheic keratoses on the trunk (Leser-Trélat sign) has been implicated as a cutaneous marker of internal malignancy, commonly gastric adenocarcinoma. Their cause is unknown, but a genetic predisposition may be present in some families. They are common in adults, more so with advanced age, and unusual in children. They occur on any surface except the palms, soles, and mucosa. Typically, they are scaly (hyperkeratotic), brown (hyperpigmented), often somewhat greasy plaques that vary in size and thickness and often appear to be stuck onto the skin surface ( Fig.
![pinpoint red dots on skin colon cancer pinpoint red dots on skin colon cancer](http://morgellonsdiseaseawareness.com/yahoo_site_admin/assets/images/shoe.8075558_std.jpg)
Seborrheic keratoses may be the most common benign tumor of the skin.