Malignancies are a type of cancer characterized by the uncontrolled growth of abnormal cells in the body. These cells can invade nearby tissues and spread to other parts of the body through the bloodstream or lymphatic system. Common types of malignancies include breast cancer, lung cancer, and leukemia. Diagnosis of malignancies often involves imaging tests, biopsies, and blood tests. Treatment options may include surgery, radiation therapy, and chemotherapy, depending on the type and stage of cancer. Early detection is crucial for improving outcomes and increasing the chances of successful treatment.