Figure 12.

(a) Short-axis plane-wave directional color power Doppler image (4 weeks post-injection) of the vascularized capsule and avascular core of case ABS2. The circled regions indicate the general locations for which histology images were obtained. (b) Histology of the capsule confirms a network of vessels with circumferential orientation on the lateral side (top row, circle 1) and oriented toward the core on the deep side (bottom row, circle 2). The vessels are indicated by the black arrow heads in the high-magnification images in the right column. Left: Masson’s trichrome. Middle and right: CD31 labelled. Right: magnification of the boxed regions in the middle column. FC: Fibrous Capsule. AC: Abscess Core. Scale bar: 1000 microns (left and middle)/200 microns (right).