A leiomyoma is a benign (non-cancerous) tumour made of smooth muscle cells. Smooth muscle is the type of muscle found in structures such as blood vessels, hair follicles, the gastrointestinal tract, and the uterus. Leiomyomas can develop in the skin (cutaneous leiomyomas) or in deep soft tissues, including muscle and the retroperitoneum or abdominal cavity. …
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Uterine leiomyosarcoma is a cancer that starts in the smooth muscle cells of the uterus. These cells make up the uterus’s muscular wall, called the myometrium, and they are the same cells that form a leiomyoma, or fibroid. A sarcoma is a cancer arising from muscle or connective tissue rather than from the lining cells …
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What does superficially invasive mean? Superficially invasive is a term pathologists use to describe cancer that has only spread a small distance into the non-cancerous surrounding tissue. The term ‘superficially invasive’ may be used to describe many different types of cancers. The actual distance that the tumour cells may spread into the normal tissue in …
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What does minimally invasive mean? Minimally invasive is a term pathologists use to describe cancer that has only spread a small distance into the non-cancerous surrounding tissue. For example, a type of cancer called squamous cell carcinoma in the mouth may be called minimally invasive if it has spread less than 0.5 cm into the …
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An atypical lipomatous tumor (ALT) is a slow-growing, low-grade type of sarcoma — a cancer that arises from fat cells. ALT is closely related to well-differentiated liposarcoma; in fact, both names refer to the same underlying tumor. The term ALT is used when the tumor arises in a location where complete surgical removal is achievable, …
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Background: Desmoid tumour or deep fibromatosis is a benign (non-cancerous) tumour that starts in connective tissue. It is considered locally aggressive because it can grow into surrounding tissues and organs. The tumour can also grow back if not completely removed. However, it will not metastasize (spread) to other body parts. Symptoms of desmoid tumour The …
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A mucinous cystadenofibroma is a noncancerous (benign) type of ovarian tumor. It consists of fluid-filled spaces called cysts, along with firm, fibrous supporting tissue. The cysts are lined by cells that produce a thick, gelatinous, mucus-like fluid called mucin. The name describes what the pathologist sees. “Cyst” refers to the fluid-filled spaces, “adeno” to the gland-like lining cells, …
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A pyogenic granuloma is a common, noncancerous (benign) growth made up of small blood vessels and inflammatory cells. It is usually round, and its surface often appears bright red because of the blood vessels inside. Another name for this growth is lobular capillary hemangioma, and you may see either name on your pathology report. Despite …
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What is a chondroma? A chondroma is a non-cancerous tumour made up of cells normally found in cartilage called chondrocytes. They usually affect young and middle-aged adults. A closely related tumour that occurs inside the bone is called an enchondroma. Is a chondroma benign? Yes. All chondromas are benign (non-cancerous) tumours. Where are chondromas found …
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Hürthle cell adenoma is an older name for a benign (non-cancerous) thyroid tumor that is now called oncocytic adenoma of the thyroid gland. The name was changed in the 2022 World Health Organization (WHO) classification of thyroid tumors. Both terms describe the same tumor, but the newer name is now preferred. The older name Hürthle …
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