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    What Is Carcinoma?

    Types of Carcinoma continued...

    Squamous cell carcinomas may crust or bleed and can include:

    • Scaly red patches
    • Open sores
    • Growth with a depression in the middle
    • Warts

    Renal cell carcinoma. This is the most common type of kidney cancer. It usually grows as a single tumor within the kidney.

    Renal cell carcinoma is sometimes discovered when you have a CT scan or an ultrasound for another reason. Sometimes it is detected after it has already become very large or spread to other organs.

    Ductal carcinoma in situ (DCIS). This is considered a pre-cancerous condition found in cells inside the ducts of the breast. But in DCIS, the cancer has not fully developed or spread into nearby areas. Nearly all women diagnosed with this can be cured.

    Invasive ductal carcinoma. This type of breast cancer starts in a milk duct but spreads into the fatty tissue of the breast. It can spread to other parts of the body through the lymph system and bloodstream.

    It may be discovered as a suspicious mass through a mammogram by your health provider or during a breast self-exam.

    Other symptoms may include:

    • Thickening of the breast skin
    • Rash or redness of the breast
    • Swelling in one breast
    • New pain in one breast
    • Dimpling around the nipple or on breast skin
    • Nipple pain, nipple turning inward, or nipple discharge
    • Lumps in underarm area

    Adenocarcinoma. This is a type of carcinoma that starts in cells called "glandular cells." These cells make mucus and other fluids. The glandular cells are found in different organs in your body.

    Adenocarcinomas can occur in different parts of the body. Some examples of cancers that can be adenocarcinomas include lung, pancreatic, and colorectal types.

    WebMD Medical Reference

    Reviewed by Jennifer Robinson, MD on December 01, 2015
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