The above sections of placenta are from a still-borne infant with severe growth retardation. On gross examination, the placenta was smaller than normal and had several infarcts. Microscopic examination showed erythrocytes with brown pigment and inclusions, as well as chronic villitis, syncytial knotting, and pigment in trophoblasts and WBCs.
Bobbi Pritt, M.D.
Vice Chair of Education, Department of Laboratory Medicine
Consultant, Division of Clinical Microbiology
Associate Professor of Laboratory Medicine and Pathology,
Mayo Clinic College of Medicine