Final Answer:
Atypical Ductal and Lobular Hyperplasia (ADH and ALH) are abnormal proliferations of cells in the breast that may indicate an increased risk of developing breast cancer.
Step-by-step explanation:
Atypical Ductal Hyperplasia (ADH) and Atypical Lobular Hyperplasia (ALH) are conditions characterized by abnormal cell growth in the breast ducts and lobules, respectively. While not cancerous themselves, they are considered high-risk lesions because they share some features with early-stage breast cancer. Women with ADH or ALH have an elevated risk of developing invasive breast cancer over time. Therefore, these conditions often lead to close monitoring, additional imaging studies, and, in some cases, preventive measures such as medication or surgery to reduce the risk. Regular screenings and discussions with healthcare providers are crucial for managing and addressing the potential risks associated with these atypical hyperplasias.