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.
Urinalysis reveals no proteinuria, cylinduria, or. casts. A secondary cause of hypertension is consid-. ered. Renal ultrasound shows normal echogenicity, with the right kidney 12.0 cm and the left kidney. 10.5 cm in length. Doppler examination is technical-. ly limited by her obesity. A renal angiogram reveals. significant stenosis (90%) of the left renal artery. due to fibromuscular dysplasia.