Purpose or Case Report: Faulty fetal packing is a concave depression of the skull caused in utero by external pressure (such as by the maternal pelvic bone, a fetal limb, or uterine fibroid). It has an incidence of approximately 1 in 10,000 births. Its main differential diagnosis is acquired ping-pong-type fracture of the malleable neonatal skull, which can raise suspicion for nonaccidental trauma if there is no history of accidental trauma. Most recent literature on faulty fetal packing describes only single case reports. This educational exhibit reviews a series of faulty fetal packing and neonatal calvarial fracture cases. After reviewing this educational exhibit, readers will be able to 1) describe the mechanism of faulty fetal packing, 2) describe the appearance of faulty fetal packing on multiple modalities including radiographs and CT, and 3) distinguish between prenatal faulty fetal packing, perinatal skull trauma, and neonatal accidental and non-accidental trauma.
Methods & Materials:
Results:
Conclusions: