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Dermatofibroma (Benign Fibrous Histiocytoma)

by Carlo Raj, MD
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    00:01 In this section, we’ll take a look at neoplastic and premalignant disorders of the skin.

    00:07 There is much to talk about and I’m going to walk you through the most organized and most common presentations on the board and wards as I have been doing for the entire course.

    00:17 Let’s take a look.

    00:20 We will begin by looking at a benign fibrous histiocytoma.

    00:26 So whenever you hear the term histiocytes, you should be thinking about the skin, right? Here’s a benign fibrous disorder, dermatofibroma.

    00:35 So, what’s happening here? Well, really, in terms of cause, not exactly sure apart from the fact that look for the history of your patient.

    00:42 Maybe perhaps a female who is shaving her leg and, when doing so, created a nick.

    00:49 And then this aberrant nick during the healing process didn’t take place properly resulting what’s known as a dermatofibroma.

    00:57 Bug bites, shaving is your most common presentation and history that you want to take a look at for your diagnosis of dermatofibroma.

    01:08 Morphology: What are you going to find? Small, firm -- firm -- indurated but non-fixed papule.

    01:16 Often dimples with lateral compression.

    01:19 Keep that in mind.

    01:20 Remember, what’s the history here? Maybe bug bites, trauma, shaving.

    01:29 Demographics of dermatofibroma.

    01:31 Commonly seen on the legs of young women.

    01:35 No treatment required because it’s benign.

    01:36 Thank goodness.


    About the Lecture

    The lecture Dermatofibroma (Benign Fibrous Histiocytoma) by Carlo Raj, MD is from the course Neoplastic Skin Diseases.


    Included Quiz Questions

    1. Benign Fibrous histiocytoma
    2. Seborrheic dermatitis
    3. Melanoma
    4. Nevus
    5. Melasma
    1. Trauma, bug bites
    2. Genetic
    3. Autoimmune
    4. Allergic
    5. Medication side effects

    Author of lecture Dermatofibroma (Benign Fibrous Histiocytoma)

     Carlo Raj, MD

    Carlo Raj, MD


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