Mastitis: Inflammation of the Breast

by Carlo Raj, MD

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    Acute mastitis, inflammation. What then happens here? Well, now at this point the newborn is suckling on the nipple. And while suckling, well, perhaps the newborn ends up biting on the nipple too hard. At this point, there’s an introduction of a laceration into the nipple, when such laceration takes place, the number one organism that you want to keep in mind or a very common organism that you want to keep in mind with entry into the nipple and thus causing acute mastitis will be Staph aureus. Usually, unilateral. You have a newborn that basically is suckling on one causing lesion, localized area of inflammation, acute mastitis. May then form abscesses as you can imagine because this is a bacterial infection. And to the point where what you want to pay attention to, is that whenever there’s inflammation and if you’re thinking abscesses, because inside the abscess, all the neutrophils releasing an enzyme causing liquefactive necrosis within the abscess, localized in that area of the abscess, perhaps it appears purulent or yellow-like. However, the surrounding tissue as you can imagine, whenever there’s an inflammatory process, you would expect there to be erythema. Diffuse spreading of the infection is a possibility. Other breast inflammatory syndromes. I want you to break up this name here. Mammary, duct, ectasia. Ectasia means enlargement. Good. Or dilation. What is being dilated? The duct. Why? Let’s take a look. It occurs most commonly in the fifth or sixth decade of life. Usually postmenopausal. Usually in multiparous women, presents with palpable periarealoar mass with skin retraction. So what exactly is occurring here? Well, there’s every possibility that there might be an inflammatory process. During the inflammatory process, there might be increased dilation or ectasia of the mammary duct and during the repair process, what does that...

    About the Lecture

    The lecture Mastitis: Inflammation of the Breast by Carlo Raj, MD is from the course Breast Disease.

    Included Quiz Questions

    1. Results in coagulative necrosis.
    2. Usually caused by S. aureus infection
    3. Usually caused by nursing infant
    4. Usually unilateral
    5. May form an abscess.
    1. Trauma to the chest
    2. DNA repair failure
    3. Duct dilation
    4. Estrogen excess
    5. Staphylococcus infection
    1. More likely in multiparous women.
    2. More likely in women of reproductive age.
    3. None are correct.
    4. All are correct.
    5. Usually occurs in 3rd or 4th decade of life.
    1. Mammary duct ecstasia
    2. Focal necrosis of fat tissue of the breast
    3. Macromastia
    4. Chronic mastitis
    5. Acute mastitis

    Author of lecture Mastitis: Inflammation of the Breast

     Carlo Raj, MD

    Carlo Raj, MD

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