“…2 The aetiology of this malformation is unknown, and in some cases it is a complication of infections contracted by the mother during pregnancy, especially toxoplasma or cytomegalovirus, while according to other authors, it is due to an abnormal development of the fetal arteries (particularly carotid arteries) spraying the brain. [5][6][7][8][9][10] It is still debated when this malformation occurs, although it is generally accepted from the 12th to 26th gestational week, because any later than this and there would be multicystic encephalomalacia instead of hydranencephaly. [11][12][13][14][15] The elements now reported suggest that the fetus was suffering from hydranencephaly, that a preterm birth occurred, and that, once extracted from the womb, the fetus did not breathe independently.…”