The role of color doppler flowing imaging in assessing N stage for nasopharyngeal carcinoma
- VernacularTitle:彩超在评价鼻咽癌N分期中的作用
- Author:
Sihai LIAO
;
Xiaohong XU
;
Zhixiong YANG
;
Zhi TANG
- Publication Type:Journal Article
- Keywords:
Nasopharyngeal neoplasms;
Tumor metastasis, lymph node;
Ultrasonography, doppler, color;
Neck
- From:
Chinese Journal of Radiation Oncology
1993;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the role of Color Doppler Flowing Imaging(CDFI) in assessing metastatic lymph node for nasopharyngeal carcinoma (NPC). Methods Neck lymph node were detected by CDFI in 206 patients who received the initial course radiotherapy in our hospital. The characteristic of neck node, such as position, figure, number, size, its relation to surrounding soft tissue, the ratio of longitudinal diameter over trnsverses′(L/T) and blood flow resistance index (RI), were recorded detailedly. Fine needle aspiration biopsy was performed on some of patients under the guide of ultrasound. Results The clinical N-stage was changed markedly after CDFI plus biopsy, with up-staging in 25 from N0 to N1 , 6 N0 to N2, 20 N1 to N2, 3 N1 to N3, 4 N2 to N3; and down-staging in 14 from N2 to N1, 7 from N3 to N2. The misdiagnosis rate of node involvement by palpation was 38.3% (79/206). The sizes of lymph node detected by palpation were larger than those by CDFI (P0.6, and the value would reached to 92.9%(182/196) and 95.5%(107/112)when such criteria combined with the diameter and growth behavior of lymph node. Conclusion Color Doppler Flowing Imaging is useful in N-staging for nasopharyngeal carcinoma by providing more reliable evidence.
