Figure 5From: Placental mesenchymal dysplasia, a case of intrauterine sudden death of fetus with rupture of cirsoid periumbilical chorionic vesselsHistopathology and immunohistochemistry of abnormal villi. a) Hydropic stem villi and diminished vessels at the affected lesion of the placenta. (HE, objective ×4). The lower left empty corner shows a cystic cavity of the hydropic stem villus. b) Decrease in both number and size of vessels by the CD34 immunohistochemical staining. (objective ×4). c) Avascular terminal villi in a part of the affected area. (HE, objective ×10). d) Scatter and disappearance of immunohistochemical CD34-positive endothelial cells in the avascular terminal villi (objective ×20).Back to article page