Fig. 2.

Note the distended vessels in the chorionic plate, as seen in cross-sections of the placenta. Extensive FTV was present in all 12 microscopic sections from widely distributed areas, resulting in dilatation and congestion of vessels proximal to zones of obstruction.

(From Kraus FT, Redline RW, Gersell DJ, et al. Placental Pathology. Washington, DC: American registry of Pathology; 2004:144; with permission.)