The term TORCH includes well-identified causes of perinatal infections i.e. toxoplasmosis, rubella, cytomegalovirus (CMV) and herpes simplex virus (HSV). A TORCH serology panel is frequently utilized for testing maternal primary infection following the detection of ultrasound abnormalities in pregnancy.
A recent study estimated the diagnostic yield of maternal TORCH serology in pregnancy following fetal ultrasound abnormalities.
Studies that assessed maternal TORCH serology for suspected fetal infection and included information on indications for testing, the definition of positive TORCH serology results and perinatal outcomes were included.
The results were as follows-
Thus a low clinical utility of TORCH serology for nonspecific ultrasound abnormalities like isolated fetal growth restriction or isolated Polyhydramnios is described. So TORCH acronym or the reflex ordering of TORCH should be retired to facilitate appropriate investigations for fetal ultrasound abnormalities.
SOURCE- Prenatal Diagnosis. 2022;42:87-96.
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