In our study Bishop score proved to be a reliable and good method for prediction of the outcome of pregnancy if a single, experienced operator evaluates it, with best statistical performances at the cut-off value more than 5 (sensitivity 65.5%, specificity 95%, PPV 97.3%, NPV 50%). The next step would be introduction of more operators, of different skills and experience and subsequent further testing of the method in different conditions.

Protective mechanisms common both for placenta and uterus are as follows: expressions of Fas ligand prevention of infiltration of activated immune cells, regulation of immunosuppression which prevents proliferation of immune cells and high natural immunity (Na cells and macrophages) of the decidua.

Decreased levels of serum copper could be used as a method of choice for detecting infection during the first trimester of pregnancy.

In cases of prenatal diagnosis of tumors of the oral cavity, where development of polyhydramnios can be expected, as well as difficulties with feeding and breathing after birth, it is important to make a plan for adequate follow-up and prompt surgical treatment immediately after birth.