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Proliferative lesions also have approximately a two-fold risk: in particular, atypical hyperplasia which is associated with an increased risk of developing breast cancer. [19] There are two types of atypical hyperplasia: lobular and ductal; the lobular type is associated a greater cancer risk of approximately five-fold and especially high ...
Like the cells of atypical lobular hyperplasia and invasive lobular carcinoma, the abnormal cells of LCIS consist of small cells with oval or round nuclei and small nucleoli detached from each other. [12] Mucin-containing signet-ring cells are commonly seen. LCIS generally leaves the underlying architecture intact and recognisable as lobules.
Atypical hyperplasia is a high-risk premalignant lesion of the breast. It is believed that atypical ductal hyperplasia (ADH) is a direct precursor for low-grade mammary ductal carcinoma , whereas atypical lobular hyperplasia (ALH) serves as a risk indicator.
Examples include atypical ductal hyperplasia, atypical lobular hyperplasia, and intraductal papillomas. References. External links. Benign ...
Presence of high-risk breast lesions like lobular carcinoma in situ (LCIS), atypical ductal hyperplasia (ADH) and atypical lobular hyperplasia (ALH). [ 7 ] Having dense breasts or breasts with diffuse microcalcification , as the screening for breast cancer is made difficult.
Usual ductal hyperplasia (UDH) is a benign lesion of the breast wherein cells look very similar to normal. It is a spectrum of changes that can range from minimal stratification of cells to proliferations that are just short of atypical ductal hyperplasia .
Approximately 10% of phyllodes tumor develop distant metastases and this occurrence is higher (20%) in patients with histological-identified malignant tumors. [16] The most common site for distant metastases include the lung, bone, and abdominal viscera. [17] In more insidious cases, the parotid region has also been described in literature. [18]
Invasive lobular carcinoma (ILC) is breast cancer arising from the lobules of the mammary glands. [1] It accounts for 5–10% of invasive breast cancer . [ 2 ] [ 3 ] Rare cases of this carcinoma have been diagnosed in men (see male breast cancer ).