PMC9227662_01
PMC9227662_02
Physiopatological factors of PPHN, clinical course and interventions.
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PMC9227662_02_fped-10-855419-g0001.jpg
F1
Placental villous changes (increased syncytial knots, villous agglutination, increased intervillous fibrin deposits - arrowhead).
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PMC9227662_02_fped-10-855419-g0002.jpg
F2
It presented changes associated with maternal malperfusion including villous changes (increased syncytial knots, villous agglutination) (Figure 2) and recent and intermediate small placental infarcts.