EXTENSIVE FAT NECROSIS

• Isointense-hypointense T1 signal centrally on sequences – almost identical to fat
• Rim of the mass commonly enhances to varying degrees
• This is a case of lupus mastitis (publication below)

Related Radiology Article: Lee SJ, Saidian L, Wahab RA, Khan S, Mahoney MC. The evolving imaging features of lupus mastitis. Breast J. 2019 Jul 1;25(4):753-4.

Daly CP, Jaeger B, Sill DS. Variable appearances of fat necrosis on breast MRI. American Journal of Roentgenology. 2008 Nov;191(5):1374-80.