Impacting factors of diagnostic accuracy of ultrasound-guided percutaneous core needle biopsy in mediastinal lesions: an analysis with 622 cases

UGNB is an effective diagnostic approach for patients with mediastinal tumors with minor complications. Cystic necrosis and younger age were significant impacting factors for unsuccessful diagnosis. New techniques, such as contrast-enhanced ultrasound and rotational core needle, may probably increase diagnostic accuracy and reduce complications.