In its classic definition, by FranÃ§ois-Louis Ganshof (1944), feudalism describes a set of reciprocal legal and military obligations among the warrior nobility revolving around the three key concepts of lords, vassals and fiefs.
The exact cause of intracardiac echogenic foci remains unclear; however, they appear to be caused by small deposits of calcium in the papillary muscle of the fetal heart.
These babies may be about twice as likely to have Down syndrome when an EIF is seen [7, 8, 9, 10] If an echogenic intracardiac focus is found on routine ultrasound then a. targeted level II sonogram should be performed. To distinguish an EIF from a fetal cardiac tumor.