Mammography is an imaging technique which is used both for screening as well as diagnosis. On mammography, presence of following features favors more towards malignant lesion: - irregular margins - spiculated boundaries - indistinct margins - higher density Reference: https://emedicine.medscape.com/article/346529-overview#:~:text=Malignant%20lesions%20tend%20to%20have,lipomas%2C%20galactoceles%2C%20and%20hamartomas. Image via: https://www.researchgate.net/publication/284165798_Pigeons_Columba_livia_as_Trainable_Observers_of_Pathology_and_Radiology_Breast_Cancer_Images/figures?lo=1