Contrast-enhanced ultrasound (CEUS) and CEUS-guided biopsy in the diagnosis of lung abscess in a patient with achalasia: case report / Francesca Vece [et al.] Bibliogr.: p. 33. - Abstr. eng. In: Interventional Medicine and Applied Science. - ISSN 2061-1617, eISSN 2061-5094. - 2013. 5. évf. 1. sz., p. 31-33. : ill.