Sonographic findings of immunoglobulin G4-related sclerosing sialadenitis.

Purpose: We evaluated the sonographic findings of immunoglobulin G4-related sclerosing sialadenitis (IgG4-SS).

Methods: Nineteen patients with IgG4-SS and 12 healthy volunteers (controls) were enrolled. The following sonographic features were evaluated: (1) enlargement of the submandibular gland by measurement of the longitudinal diameter and thickness; (2) the contour texture of the submandibular gland (smooth or rough); (3) the internal echo texture, categorized into three sonographic patterns (homogeneous, multiple hypoechoic nodule, and diffuse hypoechoic); and (4) quantitative color Doppler signaling.

Reliability of peripheral intraneural microhemodynamics evaluation by using contrast-enhanced ultrasonography.

Purpose: The purpose of the study was to validate the reliability of quantitative intraneural enhancement patterns by using contrast-enhanced ultrasonography (CEUS).

Methods: Nine asymptomatic wrists underwent a total of three CEUS examinations each conducted at 1-month intervals. The CEUS enhancement pattern of median nerves was quantitatively evaluated.