placental sign

pla·cen·tal sign

slight endometrial oozing of blood that occurs in certain animals and sometimes in women at the time of implantation of the fertilized ovum; in women, if the blood appears externally it may be mistaken for a scanty menstrual period.
References in periodicals archive ?
An important placental sign of neonatal morbidity and mortality," Archives of Pathology and Laboratory Medicine, vol.
Altshuler, "Chorangiosis: an important placental sign of neonatal morbidity and mortality," Archives of Pathology & Laboratory Medicine, vol.
Whatever its cause, it should be considered as a placental sign of potential clinical significance.
(100) The placenta features a high reserve capacity so that placental signs of fetal hypoxia are far less common than are those of pure placental hypoxia.
Because of unsatisfactory sensitivity (fetal erythroblasts, Table 2) (21) and specificity (meconium, Tables 1 and 2) (22-24) of the placental signs of fetal hypoxia, usually only placental hypoxic lesions are instead diagnosed.
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