Contrast-enhanced ultrasound findings of Kikuchi cervical lymphadenopathy in children: three case reports and literature review.

KFD (Kikuchi-Fujimoto disease, KFD) is an important cause of lymphadenitis in children. Here, we report three children with an emphasis on contrast-enhanced ultrasound (contrast-enhanced ultrasound, CEUS) for describing the features for pediatric Kikuchi cervical lymphadenopathy and evaluating lymph node perfusion. CEUS demonstrates significant diagnostic potential in the assessment of perfusion in lymph nodes.