PMC5457765_01
Gross umbilical cord at time of delivery.
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At delivery, the umbilical cord was dusky and thrombus was palpable (Figure 1).
Cross section of umbilical vein with 40% thrombus occluding the vessel.
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The pathological report described a three-vessel umbilical cord with subocclusive thrombosis of the umbilical vein, narrowing the vascular lumen by 40% (Figure 2).
Chorionic villi with evidence of chorangiosis; more than 10 capillaries in at least 10 terminal villi in low-power fields (10x).
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fig3
Due to greater than the 10 capillaries per high power field of the chorionic villi, chorangiosis was identified (Figure 3).