Encapsulated papillary carcinoma is a rare and distinct type of breast cancer that is usually non-invasive. Non-invasive means the cancer cells have not spread beyond their original location into the surrounding breast tissue. The tumor grows inside a small, cyst-like space and is surrounded by a thick fibrous capsule — a layer of connective tissue …
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In a pathology report, the term non-invasive means that a tumour or abnormal growth has not spread into the surrounding tissues. The abnormal cells are confined to the original layer of tissue where they started. This term is most often used to describe early-stage cancers or pre-cancerous conditions, but it also applies to all benign …
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Adenocarcinoma in situ (AIS) is an early form of cancer that develops from glandular cells — the specialized cells that line organs and produce substances such as mucus or hormones. The phrase “in situ” is Latin for “in its original place,” meaning the abnormal cells are confined to the layer of tissue where they first …
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Squamous cell carcinoma in situ of the larynx is a non-invasive type of cancer. If left untreated, this condition can evolve into a type of invasive laryngeal cancer called squamous cell carcinoma. This condition typically affects adults over the age of 40 years. The larynx The larynx is a structure located in the upper neck …
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Melanoma in situ is an early, non-invasive form of skin cancer that arises from melanocytes, the cells that produce melanin. In healthy skin, melanocytes sit in a neat row at the bottom of the epidermis — the thin outer layer of the skin. In melanoma in situ, these cells have become cancerous and have grown in abnormal …
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Ductal carcinoma in situ (DCIS) is a noninvasive type of breast cancer that starts in the lining of the breast ducts — the tiny tubes that carry milk from the glands to the nipple. Noninvasive means that all the abnormal cells are confined inside the ducts and have not broken through the duct wall into …
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Serous tubal intraepithelial carcinoma — usually called STIC — is a pre-invasive form of cancer that develops in the lining of the fallopian tube. “Intraepithelial” means the abnormal cells are confined to the thin surface layer of the tube and have not grown into the deeper tissue beneath it. Because the cells have not broken …
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What is differentiated vulvar intraepithelial neoplasia (dVIN)? Differentiated vulvar intraepithelial neoplasia (dVIN) is a pre-cancerous disease that develops on the vulva. It is called a pre-cancerous disease because over time it can turn into a type of vulvar cancer called squamous cell carcinoma. What causes differentiated vulvar intraepithelial neoplasia? Differentiated vulvar intraepithelial neoplasia (dVIN) is …
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Lentigo maligna is a type of melanoma in situ, which means it is a very early stage of skin cancer that has not yet spread beyond the top layer of the skin (the epidermis). It typically develops in areas of the skin that have been exposed to the sun for many years, such as the …
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