TY - JOUR
T1 - Sampling and Definitions of Placental Lesions
T2 - Amsterdam Placental Workshop Group Consensus Statement
AU - Khong, T. Yee
AU - Mooney, Eoghan E.
AU - Ariel, Ilana
AU - Balmus, Nathalie C. M.
AU - Boyd, Theonia K.
AU - Brundler, Marie-Anne
AU - Derricott, Hayley
AU - Evans, Margaret J.
AU - Faye-Petersen, Ona M.
AU - Gillan, John E.
AU - Heazell, Alex E. P.
AU - Heller, Debra S.
AU - Jacques, Suzanne M.
AU - Keating, Sarah
AU - Kelehan, Peter
AU - Maes, Ann
AU - McKay, Eileen M.
AU - Morgan, Terry K.
AU - Nikkels, Peter G. J.
AU - Parks, W. Tony
AU - Redline, Raymond W.
AU - Scheimberg, Irene
AU - Schoots, Mirthe H.
AU - Sebire, Neil J.
AU - Timmer, Albert
AU - Turowski, Gitta
AU - van der Voorn, J. Patrick
AU - van Lijnschoten, Ineke
AU - Gordijn, Sanne J.
PY - 2016/7
Y1 - 2016/7
N2 - Context.-The value of placental examination in investigations of adverse pregnancy outcomes may be compromised by sampling and definition differences between laboratories.Objective.-To establish an agreed-upon protocol for sampling the placenta, and for diagnostic criteria for placental lesions. Recommendations would cover reporting placentas in tertiary centers as well as in community hospitals and district general hospitals, and are also relevant to the scientific research community.Data Sources.-Areas of controversy or uncertainty were explored prior to a 1-day meeting where placental and perinatal pathologists, and maternal-fetal medicine specialists discussed available evidence and subsequently reached consensus where possible.Conclusions.-The group agreed on sets of uniform sampling criteria, placental gross descriptors, pathologic terminologies, and diagnostic criteria. The terminology and microscopic descriptions for maternal vascular malperfusion, fetal vascular malperfusion, delayed villous maturation, patterns of ascending intrauterine infection, and villitis of unknown etiology were agreed upon. Topics requiring further discussion were highlighted. Ongoing developments in our understanding of the pathology of the placenta, scientific bases of the maternofetoplacental triad, and evolution of the clinical significance of defined lesions may necessitate further refinements of these consensus guidelines. The proposed structure will assist in international comparability of clinicopathologic and scientific studies and assist in refining the significance of lesions associated with adverse pregnancy and later health outcomes.
AB - Context.-The value of placental examination in investigations of adverse pregnancy outcomes may be compromised by sampling and definition differences between laboratories.Objective.-To establish an agreed-upon protocol for sampling the placenta, and for diagnostic criteria for placental lesions. Recommendations would cover reporting placentas in tertiary centers as well as in community hospitals and district general hospitals, and are also relevant to the scientific research community.Data Sources.-Areas of controversy or uncertainty were explored prior to a 1-day meeting where placental and perinatal pathologists, and maternal-fetal medicine specialists discussed available evidence and subsequently reached consensus where possible.Conclusions.-The group agreed on sets of uniform sampling criteria, placental gross descriptors, pathologic terminologies, and diagnostic criteria. The terminology and microscopic descriptions for maternal vascular malperfusion, fetal vascular malperfusion, delayed villous maturation, patterns of ascending intrauterine infection, and villitis of unknown etiology were agreed upon. Topics requiring further discussion were highlighted. Ongoing developments in our understanding of the pathology of the placenta, scientific bases of the maternofetoplacental triad, and evolution of the clinical significance of defined lesions may necessitate further refinements of these consensus guidelines. The proposed structure will assist in international comparability of clinicopathologic and scientific studies and assist in refining the significance of lesions associated with adverse pregnancy and later health outcomes.
KW - FETAL THROMBOTIC VASCULOPATHY
KW - UMBILICAL-CORD COILING
KW - CELL CHORIONIC VASCULITIS
KW - GESTATIONAL-AGE INFANTS
KW - REACTION PATTERNS
KW - BIRTH-WEIGHT
KW - CLINICAL-SIGNIFICANCE
KW - GROWTH RESTRICTION
KW - OXIDATIVE STRESS
KW - PRETERM BIRTH
U2 - 10.5858/arpa.2015-0225-CC
DO - 10.5858/arpa.2015-0225-CC
M3 - Article
SN - 0003-9985
VL - 140
SP - 698
EP - 713
JO - Archives of pathology & laboratory medicine
JF - Archives of pathology & laboratory medicine
IS - 7
ER -