Figure 17a.

Acute and chronic manifestations of fat necrosis in two patients. (a) Axial contrast-enhanced CT image of acute fat necrosis in a 45-year-old woman after surgery shows a partially defined fatty mass (straight arrow) in the anterior left abdomen, with substantial surrounding postoperative and inflammatory stranding and fluid (curved arrows). (b) Axial contrast-enhanced CT image of chronic fat necrosis in a 50-year-old man shows a well-circumscribed fatty mass (arrow) with peripheral thin calcification in the anterior left abdomen.