GSTM1 and congestive heart failure: In fact, a decreased size of the fetal liver is typical of intrauterine growth retardation [14], while its increased size is a good indicator of fetal macrosomias, Rh isoimmunization, erythroblastosis, Hb Bart’s disease, congestive heart failures, and intrauterine infections [1, 3, 13, 14, 20].