Power Doppler sonography (PDS) is commonly used in the assessment of vasculature of cervical lymph nodes. This study was undertaken to investigate the intranodal vasculature of tuberculous cervical lymphadenitis using PDS. Twenty-five patients (42 nodes) with proven tuberculous cervical lymphadenitis were included in the study. Lymph nodes were assessed for their vascular distribution and vascular resistance (pulsatility index, PI and resistance index, RI). The vascular distribution was classified into four categories: 1. Hilar; 2. Capsular; 3. Mixed (hilar+capsular); 4. Absent. Hilar vascularity was sub-categorized into with displacement and without displacement by cystic necrosis. The vascular resistance was measured from the Doppler spectrum. Results are shown in the table below. Hilar (36%) and mixed (29%) types are the common vascular distribution in tuberculous lymphadenitis. Hilar vascular tends to be displaced by intranodal cystic necrosis. The mean RI and PI in tuberculous lymphadenitis are 0.72 and 1.40 respectively. In conclusion, displaced hilar vascularity by intranodal cystic necrosis and a low vascular resistance are common features in tuberculous lymphadenitis.
|Journal||Ultrasound in Medicine and Biology|
|Issue number||SUPPL. 2|
|Publication status||Published - 1 Jan 2000|
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging