LAUSR

‘‘Venetian blind’’ shadowing is a type of posterior acoustic artifact described as bands of linear shadows along lines of sight, often diverging on a convex probe [1]. Ironic to its name, it resembles ‘‘vertical blinds’’ rather than the classic horizontal appearance of Venetian window blinds (Figs. 1, 2). It has classically been described in uterine adenomyosis [2, 3] as heterogeneous myometrial echotexture with regions of increased (heterotopic endometrial tissue) and decreased echogenicity (smooth muscle hyperplasia), associated with intramyometrial hypoechoic radiating linear striations [4] (Fig 3). Alternatively, it can also be seen in uterine fibroids due to its whorled nature or internal calcifications causing variable absorption of sonographic beams [5] (Fig 4). This makes sonographic differentiation between uterine fibroid and focal adenomyosis difficult. Nevertheless, this finding alongside intramyometrial/suben-