All the aforementioned elements led us to look out for infectious fetopathy as the most likely diagnosis to ascertain first.
We performed an amniocentesis, and PCR testing for cytomegalovirus was positive. PCR for parvovirus B19 and herpes simplex virus were negative.
Serologies for toxoplasmosis, rubeola, and syphilis were also negative.
Therefore our diagnosis was CMV-induced fetopathy.

Case published with Dr Fabrice Cuillier.