Aortic coarctation diagnosed in a hypertensive child undergoing Doppler sonography for suspected renal artery stenosis.

A 5-year-old girl presented with hypertension, with no perceived blood pressure differential between the lower and upper extremities. Doppler ultrasound revealed a tardus-parvus pattern with diminished systolic acceleration and peak systolic velocities in the abdominal aorta and both main renal arteries. Doppler interrogation of the suprasternal aorta showed a normal waveform, suggesting a partial obstruction distally.

The cisterna chyli: incidence and characteristics on CT.

The objective of this study was primarily to determine the incidence of the cisterna chyli (CC) on computed tomography (CT). Its radiologic characteristics were also evaluated. Retrospective review of 403 randomly chosen CT cases was made.