Ultrasound-Guided Skin Biopsy: Application in Diagnosis of Reticulate Eruptions.

Biopsy for reticulate eruptions such as livedo reticularis and livedo racemosa representing an underlying vasculitis or vessel occlusion presents a challenge for most clinicians. Sampling errors frequently occur due to the difficulty in selecting the most appropriate and histologically representative site for biopsy. Here we describe a new technique where ultrasound is used to guide the biopsy with pinpoint accuracy to the affected vessel.