Surveillance for cystic fibrosis-associated hepatobiliary disease: early ultrasound changes and predisposing factors.

Objective: To investigate routine ultrasonography (US) as an early marker and to identify risk factors for the development of cirrhosis and portal hypertension (PHT) in cystic fibrosis (CF).

Study Design: A cohort of 106 children with CF aged 5.9+/-2.

Doppler US in patients with crohn disease: vessel density in the diseased bowel reflects disease activity.

Purpose: To determine if neovascularization associated with Crohn disease, as detected with Doppler ultrasonography (US), reflects clinical disease activity.

Materials And Methods: A devised measurement, vessel density, was estimated with color Doppler US. Patients with Crohn disease underwent clinical and laboratory assessment in which the Crohn disease activity index was measured; patients underwent abdominal US the same week.

Doppler sonography of head and neck masses in children.

This article presents a clinical approach to the investigation of a child with a mass of the head or neck. The anatomy of the head and neck region is reviewed, and the technique of Doppler sonography in children is outlined. The pathology and the sonographic appearance of common head and neck masses specific to children are described.