Benign Nevus and Dysplastic Nevus

by Carlo Raj, MD

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    Our topic now brings us into nevi. So with nevi, what we’ll do is first define what a nevus is. Nevus is a cluster of melanocytes. Once again, a nevus is a cluster of melanocytes. If it’s cluster of melanocytes, then guess what color it’s going to give your skin. Well, depending as to location. By that I mean, if it’s in the epidermis more so, then it will give your skin a pigmented or brownish type of appearance. But if you have a cluster of melanocytes that is deeper down in your dermis, well, think about that please. If your melanocytes are deeper down in the dermis, how was that then going to give you -- or the presentation of such significant hyperpigmentation? And really, it doesn’t. But at this point, all I’m going to introduce you to is the definition, which is cluster of melanocytes. We’ll first walk through our benign nevi. And once we walk through our benign nevi, then what may then happen to the nucleus is the fact that it may then become atypical. And if you have an atypical or dysplastic nevi, guess where we're headed? Our third, well not really third, but another type of skin cancer known as your melanoma that obviously that being extremely common in the U.S. There are two categories. The common nevus which is symmetric, uniform without atypia. What does that mean to you? Benign, benign, benign, benign, benign, right? We’ve had the discussion plenty in neoplasia. Without increased concern. If on the other end of the spectrum, we have a nevus that is dysplastic. Irregular shape, pigmentation with atypical cytology. Possibly preneoplastic, hence, it requires and mandates and warrants proper followup to make sure that your patient doesn’t go into melanoma. Is this understood? Lay down the...

    About the Lecture

    The lecture Benign Nevus and Dysplastic Nevus by Carlo Raj, MD is from the course Neoplastic Skin Diseases. It contains the following chapters:

    • Benign Nevi and Dysplastic Nevi
    • Benign Nevus
    • Nevocellular Nevus
    • Dysplastic Nevus
    • Nevi

    Included Quiz Questions

    1. Melanoma
    2. Benign nevus
    3. Compound nevus
    4. Eczema
    5. Atopic dermatitis
    1. Cherry hemangioma
    2. Strawberry hemangioma
    3. Port-wine stain
    4. Pyogenic granuloma
    5. Skin tag
    1. Dermoepidermal junction
    2. Epidermis
    3. Dermis
    4. Hypodermis
    5. Stratum lucidum
    1. It is an autosomal recessive disease
    2. The lesions slowly grow over time
    3. It is an autosomal dominant disease
    4. It is mostly seen in older patient
    5. The disease always has pigmented lesions

    Author of lecture Benign Nevus and Dysplastic Nevus

     Carlo Raj, MD

    Carlo Raj, MD

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