Perfusion Patterns of Peripheral Pulmonary Granulomatous Lesions Using Contrast‐Enhanced Ultrasound (CEUS) and Their Correlation with Immunohistochemically Detected Vascularization Patterns

Purpose To describe the perfusion patterns of peripheral pulmonary granulomatous lesions (PPGLs) by contrast‐enhanced ultrasound (CEUS) and their correlation with vascularization patterns (VPs) represented by immunohistochemical (CD34) endothelial staining. Patients and methods From January 2007 until September 2020, 10 consecutive patients with histologically confirmed PPGLs were investigated by CEUS. The time to enhancement, classified as early pulmonary‐arterial (PA) pattern of enhancement versus delayed bronchial‐arterial (BA) pattern of enhancement, the extent of enhancement, classified as marked or reduced, the homogeneity of enhancement, classified as homogeneous or inhomogeneous, and the decrease of enhancement, classified as rapid washout (