Figure 5b. Unencapsulated subcutaneous lipoma in a 40-year old man. (a) Axial T1-weighted MR image (545/16.5) shows a mass (*) with signal intensity identical to that of subcutaneous fat and that blends imperceptibly with surrounding adipose tissue. No low-signal-intensity capsule is seen separating the lipoma from the subcutaneous fat. Note the anterior marker in place for identifying this as the site of a palpable soft-tissue mass. (b) Photomicrograph (original magnification, x175; hematoxylin-eosin [H-E] stain) reveals typical large adipocytes that composed the entire lesion.