ABNORMAL PLACENTAL SIZE

TOO Large (greater than5cm in sections obtained at right angles to the long axis), maternal malady, diabetic mothers (= villous oedema), intrauterine infections, anaemic mothers (= usual histology), foetal malady, erythroblatosis foetalis (= villous oedema and hyperplasia), umbilical vein obstruction, foetal tall output failure, big chorioangioma, sacrococcygeal teratoma, arteriovenous fistula too little, preeclampsia (associated with placental infarcts in 33-60%)