Computed tomography appearance of marked keratinization of metastatic cervical lymph nodes

Author(s):  
Eiji Nakayama ◽  
Eiichiro Ariji ◽  
Masanori Shinohara ◽  
Kazunori Yoshiura ◽  
Kunihiro Miwa ◽  
...  
2011 ◽  
Vol 125 (8) ◽  
pp. 820-828 ◽  
Author(s):  
Y Shu ◽  
X Xu ◽  
Z Wang ◽  
W Dai ◽  
Y Zhang ◽  
...  

AbstractObjective:To investigate the performance of indirect computed tomography lymphography with iopamidol for detecting cervical lymph node metastases in a tongue VX2 carcinoma model.Materials and methods:A metastatic cervical lymph node model was created by implanting VX2 carcinoma suspension into the tongue submucosa of 21 rabbits. Computed tomography images were obtained 1, 3, 5, 10, 15 and 20 minutes after iopamidol injection, on days 11, 14, 21 (six rabbits each) and 28 (three rabbits) after carcinoma transplantation. Computed tomography lymphography was performed, and lymph node filling defects and enhancement characteristics evaluated.Results:Indirect computed tomography lymphography revealed bilateral enhancement of cervical lymph nodes in all animals, except for one animal imaged on day 28. There was significantly slower evacuation of contrast in metastatic than non-metastatic nodes. A total of 41 enhanced lymph nodes displayed an oval or round shape, or local filling defects. One lymph node with an oval shape was metastatic (one of 11, 9.1 per cent), while 21 nodes with filling defects were metastatic (21/30, 70 per cent). The sensitivity, specificity, accuracy, and positive and negative predictive values when using a filling defect diameter of 1.5 mm as a diagnostic criterion were 86.4, 78.9, 82.9, 82.6 and 83.3 per cent, respectively.Conclusion:When using indirect computed tomography lymphography to detect metastatic lymph nodes, filling defects and slow evacuation of contrast agent are important diagnostic features.


1985 ◽  
Vol 111 (11) ◽  
pp. 735-739 ◽  
Author(s):  
M. H. Stevens ◽  
H. R. Harnsberger ◽  
A. A. Mancuso ◽  
R. K. Davis ◽  
L. P. Johnson ◽  
...  

2001 ◽  
Vol 27 (3) ◽  
pp. 707-712 ◽  
Author(s):  
Tatsuhiko NAKASATO ◽  
Yoshiharu TAMAKAWA ◽  
Masayuki HOSHINO ◽  
Hitoshi SATOH ◽  
Mitsuru IZUMISAWA ◽  
...  

2002 ◽  
Vol 116 (3) ◽  
pp. 194-199 ◽  
Author(s):  
K. Sarvanan ◽  
J. Rajiv Bapuraj ◽  
Suresh C. Sharma ◽  
B. D. Radotra ◽  
N. Khandelwal ◽  
...  

The detection of cervical lymph nodal metastasis and carotid artery invasion by metastatic lymph nodes is an important issue in the management of head and neck malignancies. This study compared the evaluation of metastasis by palpation, ultrasonography (USG) and computed tomography (CT) in patients with known head and neck malignancies.Twenty-five consecutive patients with head and neck malignancy were prospectively evaluated for the presence of cervical lymphadenopathy and carotid artery invasion. All patients underwent clinical examination (palpation), USG and CT examination. A modified CT criteria was employed which yielded acceptable results for the detection of metastatic nodes. Radical neck dissection was performed for 26 neck sides, and the results of pre-operative evaluation were confirmed by the surgical and histopathological findings.Palpation, ultrasound and CT have comparable sensitivity in the determination of metastasis involving cervical lymph nodes. Thus palpation should be employed as the primary method of assessment of secondaries in the neck.However, palpation is less sensitive than CT and USG in the detection of carotid artery involvement, hence the clinical suspicion of arterial invasion should be confirmed by either CT or USG which have similar accuracy in the detection of carotid artery invasion.


Radiographics ◽  
1983 ◽  
Vol 3 (2) ◽  
pp. 339-351 ◽  
Author(s):  
Deborah L. Reede ◽  
R. Thomas Bergeron ◽  
Margaret Ann Whelan ◽  
Noel L. Cohen ◽  
Mark S. Persky

Sign in / Sign up

Export Citation Format

Share Document