Fetus in womb with multiple problems.

Patient: My wife is pregnant of 24 weeks. A couple of days back we went for a routine ultrasound checkup. Radiologist diagnosed the fetus with occipital encephalocele, clubfoot, autosomal successive polycystic kidney disease, eyeballs not formed, hypertelorism. Please suggest why this all happened to our baby and what would be the causes for it and what should we do now.