[PIRADS]: Conforming to prostate sector, sextant, zone, or lobe. Abnormal signal other than a mass Involving a large volume of prostatic tissue. [BI-RADS] Mammo: Used for numerous calcifications that occupy a large portion of breast tissue (> 2cm in greatest dimension), not conforming to a duct distribution. May involve most of a quadrant or even more than a single quadrant.