Fig. 8

Post-mortem images of a foetus at 25 weeks gestation with a prenatally detected neck mass. Post-mortem photographs at external examination from the front (a) and of the left side of the neck (b) demonstrate the soft tissue neck mass. The post-mortem ultrasound (c) was performed 2 days after delivery and demonstrated mixed solid and cystic elements with some internal calcific foci in this lesion. The subsequent post-mortem MRI (d) performed on the same day confirms the ultrasound findings of a solid and cystic mass, although it was harder to demonstrate the internal calcific foci. At histopathological assessment, the mass was found to represent a teratoma