Thorax: Breast

by Craig Canby, PhD

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    Welcome to this lecture on “The Breast”. This slide lists the learning objectives that you should be able to answer at the conclusion of this presentation. Describe the external features of the breast. Describe the tissue elements of the breast. Describe the neurovasculature and lymphatic drainage of the breast. List the frequencies of cancer by location in the breast. Describe a sentinel node biopsy and its clinical purpose. Describe nerves that are vulnerable during a mastectomy. Describe how the milk line explains variations in the breast. And then we'll finish up by identifying the key take-home messages in the summary. And then we'll provide attribution for the images that are used throughout this presentation. Here is our body map and our focus will be on the area that we see in through here and then on the left as well. And our first slide, this slide depicts the gross appearance of the breast. It is an anterior view. The most conspicuous structure is this pigmented area, referred to as the areola, and in its center, you have an elevation and that elevated region is the nipple. If you take a look within the pigmented areola, you will see some bumps and these bumps that you see are sebaceous glands that are referred to as areolar glands. And their oily secretion will help lubricate the areola as well as the nipple and this is essential, particularly if the mother is nursing her infant. Here we're looking at the breast in a lateral view. The breast is said to overlie ribs 2, 3, 4, 5 and 6. It will generally run from the sternum to the midaxillary line. And in the lateral view, our midaxillary line would be approximately in this location. However, in this particular individual, the breast tissue does not...

    About the Lecture

    The lecture Thorax: Breast by Craig Canby, PhD is from the course Abdominal Wall. It contains the following chapters:

    • Gross appearance
    • Blood supply and innervation
    • Mammogram
    • Sentinel node biopsy

    Included Quiz Questions

    1. Ribs 2-6
    2. Ribs 1-4
    3. Ribs 3-7
    4. Ribs 4-8
    5. Ribs 4-9
    1. Axillary nodes
    2. Parasternal nodes
    3. Abdominal nodes
    1. Upper lateral quadrant
    2. Lower lateral quadrant
    3. Upper medial quadrant
    4. Lower medial quadrant
    5. Central region of the breast
    1. Thoracodorsal nerve
    2. Long thoracic nerve
    3. Intercostobrachial nerve
    4. Medial brachial nerve
    5. Musculocutaneous nerve

    Author of lecture Thorax: Breast

     Craig Canby, PhD

    Craig Canby, PhD

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