D efinition — Infiltration of the intervillous space by a monomorphic population of histiocytes. Clinical Features Epidemiology Uncommon. Histiocytic intervillositis is associated with spontaneous abortion and recurrent pregnancy loss. Rare cases of maternal malaria or recurrent sepsis have been documented.…
D efinition — Maternal chronic inflammatory cells within terminal villi, not attributable to any known infection. Clinical Features Epidemiology Present in 5% to 10% of examined placentas. More often seen in women with autoimmune disorders such as systemic lupus erythematosus.…
PITFALL D efinition — Placental infection by the gram-positive bacteria Listeria monocytogenes . Clinical Features Epidemiology Placental infection with Listeria is an uncommon occurrence. The most common method of infection is ingestion of unpasteurized dairy products, although deli meats and…
D efinition — Infection by any species of Candida during the gestational period. Clinical Features Epidemiology Vaginal infection by Candida is common and is thought to occur in up to 25% of all pregnancies. Ascending infection of the placenta and/or…
D efinition — Ascending infection of the amniotic fluid leading to a fetal and maternal inflammatory response. Clinical Features Epidemiology Acute chorioamnionitis (ACA) is detected in approximately 25% of preterm deliveries, and gestational age of babies born with ACA is…
D efinition — Diffuse or multifocal fibrin deposition that fills and obliterates the intervillous space along a significant portion of the chorionic plate. Clinical Features Epidemiology Uncommon (less than 1% of placentas). Occasionally associated with abnormal maternal clotting (APhA, ATIII…
D efinition — Detached strips of amniotic membrane that restrict fetal growth, resulting in asymmetric anomalies that do not follow a recognized developmental pattern. Clinical Features Epidemiology One in 2,500 to 10,000 deliveries. You’re Reading a Preview Become a Clinical…
PITFALL D efinition — Thrombus formation within the umbilical cord, within its tributaries on the placental surface, or within stem villi. Clinical Features Epidemiology Common; seen in 3% to 10% of placentas. Increased incidence with maternal diabetes. You’re Reading a…
D efinition — Variations in membranous insertions on the placental disk. Clinical Features You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
D efinition — Marginal cord insertion is defined as insertion within 2 cm of the periphery of the disk. With a membranous (velamentous) cord insertion, the cord vessels insert into the placental disk within the membranes, in the absence of Wharton's…