title: Pulmonary hypoplasia on preterm infant associated with diffuse chorioamniotic hemosiderosis caused by intrauterine hemorrhage due to massive subchorial hematoma: report of a neonatal autopsy case.
abstract: A male infant born prematurely at 31 weeks of gestation weighed 789 g and had mildly brown-colored oral/tracheal aspirates at delivery. The amniotic fluid was also discolored, and its index was below 5. The patient died of hypoxemic respiratory and cardiac failure 2 hours after birth. The maternal profiles showed placenta previa and intrauterine growth restriction (IUGR) at 22 weeks of gestation, and revealed recurrent episodes of antenatal and substantial vaginal bleeding and oligohydramnios, indicating chronic abruption-oligohydramnios sequence. The thickened placenta, weighing 275 g, grossly displayed unevenness and diffuse opacity with green to brown discoloration in the chorioamniotic surface, and revealed chronic massive subchorial hematomas (Breus' mole) with old peripheral blood clot, circumvallation, and infarction. Microscopically, diffuse Berlin-blue staining-positive hemosiderin deposits were readily encountered in the chorioamniotic layers of the chorionic plate, consistent with diffuse chorioamniotic hemosiderosis (DCH) due to Breus' mole, accompanied by diffuse amniotic necrosis. At autopsy, an external examination showed several surface anomalies and marked pulmonary hypoplasia, 0.006 (less 0.012) of lung:body weight ratio. Since Breus' mole has a close relationship with intrauterine hemorrhage, resulting in DCH, IUGR, and/or pulmonary hypoplasia of the newborn, the present features might be typical.
authors: Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Fukuoka, Japan. sousuke@med.uoeh-u.ac.jp
authors: Sohsuke
authors: S
authors: Yamada
authors: Takamitsu
authors: T
authors: Marutani
authors: Masanori
authors: M
authors: Hisaoka
authors: Takashi
authors: T
authors: Tasaki
authors: Atsunori
authors: A
authors: Nabeshima
authors: Mika
authors: M
authors: Shiraishi
authors: Yasuyuki
authors: Y
authors: Sasaguri
mesh_terms: D000015:Abnormalities, Multiple / Q000473:pathology*; D000328:Adult; D049033:Chorioallantoic Membrane / Q000473:pathology*; D002823:Chorion / Q000473:pathology; D017809:Fatal Outcome; D005260:Female; D006406:Hematoma / Q000150:complications / Q000473:pathology*; D006470:Hemorrhage / Q000150:complications / Q000473:pathology*; D006486:Hemosiderosis / Q000209:etiology / Q000473:pathology*; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008168:Lung / Q000002:abnormalities / Q000473:pathology; D008171:Lung Diseases / Q000150:complications / Q000473:pathology*; D008297:Male; D010922:Placenta Diseases / Q000209:etiology / Q000473:pathology*; D011247:Pregnancy