Pourlis A., Amiridis G. S., Vainas E.

ABSTRACT: Two rare cases of holoacardius amorphus totalis monsters are reported herewith. The monsters were examined macroscopically, radiographically and histologically, whereas karyotyping was performed in one normal twin. Both monsters were covered with normal skin and hair, while histological examinations revealed a homogenous parenchyma. The first monster was congener to those previously reported, while the second is the smallest case (weight 21.3 gr) reported to date. In both cases, two days after calving, two corpora, lutea were found on the ovaries of the dams. The aetiology as well as the mechanisms of teratogenesis are discussed.