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Correlative study of indirect computed tomography lymphography using iopamidol and histopathology in a cervical lymph node metastasis model. Laryngoscope 2011 Apr;121(4):724-31

Date

02/10/2011

Pubmed ID

21305551

DOI

10.1002/lary.21404

Scopus ID

2-s2.0-79953108534 (requires institutional sign-in at Scopus site)   10 Citations

Abstract

OBJECTIVES/HYPOTHESIS: To investigate the potential usefulness of indirect computed tomography lymphography (CT-LG) with iopamidol in the detection of cervical lymph node metastases in a VX2 rabbit tongue cancer model.

STUDY DESIGN: Randomized controlled trial.

METHODS: Thirty-seven rabbits were randomly divided into control (n = 7) and tongue tumor-bearing (n = 30) groups. In the control group, indirect CT-LG was performed with 0.5- and 0.25-mL injections of iopamidol in the right and left tongue submucosa, respectively. In the tumor-bearing group, indirect CT-LG with 0.5 mL of iopamidol was performed on day 11 (n = 8), 14 (n = 8), 21 (n = 8), or 28 (n = 6) after carcinoma transplant. The correlation between indirect CT-LG and histopathology was investigated.

RESULTS: In normal rabbits, oval or round enhanced cervical lymph nodes in each side of the neck were visualized by indirect CT-LG. In tumor-bearing rabbits, one enhanced lymph node on each side of the neck was visualized with or without filling defects in all rabbits except two on day 28 in which lymph nodes were not enhanced. The sensitivity, specificity, accuracy, and positive and negative predictive values for using filling defects on CT-LG as a diagnostic criterion were 77.4%, 77.8%, 77.6%, 80%, and 75%, respectively. Indirect CT-LG detected 84.6% of 2- to 6-mm intranodal tumor deposits.

CONCLUSIONS: Indirect CT-LG may be useful for differentiating metastatic from nonmetastatic lymph nodes.

Author List

Shu Y, Xu X, Chodara AM, Regner MF, Sha Y, Jiang JJ, Xiang M, Wu H

Author

Michael Regner MD Associate Professor in the Radiology department at Medical College of Wisconsin




MESH terms used to index this publication - Major topics in bold

Animals
Contrast Media
Disease Models, Animal
Image Processing, Computer-Assisted
Iopamidol
Lymphatic Metastasis
Lymphography
Neoplasm Transplantation
Rabbits
Sensitivity and Specificity
Tomography, X-Ray Computed
Tongue Neoplasms