Lymph node hilus - Gray scale and power Doppler sonography of cervical nodes

Objective. To investigate the difference in the nodal hilus. evaluated by g ray scale and power Doppler sonography. Methods. One hundred ninety-two pat ients with proven cervical lymphadenopathy were included in the study (meta stases, n = 118; tuberculosis, n = 56; and lymphoma, n = 18). Lymph nodes w ere evaluated by gray scale sonography for the echogenic hilus and power Do ppler sonography for hilar vascularity. Results. Mar vascularity was found even though the lymph node did not show an echogenic hilus on gray scale so nography (metastases, 59%; tuberculosis, 66%; and lymphoma, 91%). Conclusio ns. Sonologists should be aware that gray scale and Doppler sonography show different aspects of the hilus, and the absence of the hilus on gray scale sonography does not necessarily imply an associated absence of hilar vascu larity.