Mangafodipir trisodium-enhanced MRI of hepatocellular carcinoma: correlation with histological characteristics.

Abstract

AIM:

To define histopathological factors related to the degree of mangafodipir trisodium (MnDPDP) uptake in hepatocellular carcinomas (HCCs) on magnetic resonance imaging (MRI).

MATERIALS AND METHODS:

In-phase and opposed-phase gradient-echo MRI images were obtained preoperatively in 37 patients with 38 HCCs before and 15-30 min after intravenous injection of MnDPDP. Subjective ratings of the enhancement degree, the signal-to-noise ratio (SNR) of the lesion and the liver, and the contrast enhancement ratios (CER) were compared with histopathological factors.

RESULTS:

The mean SNR of HCCs increased from 59.6 to 95.0 (CER=59.5%), whereas that of the liver increased from 75.1 to 108.7 (CER=45.2%). Eight HCCs showed mild enhancement, 11 moderate enhancement, and 15 strong enhancement. There was no visually perceptible enhancement in four HCCs (10.3%). The degree of MnDPDP enhancement was significantly related with the cell density ratio (p<.05) and monoclonal hepatocyte antibody positivity (p<0.005), but not with size, growth type, cell type, histological type, cytokeratin 7, or cytokeratin 19. Well-differentiated HCC showed higher MnDPDP enhancement compared with higher grade HCCs, but the differences were not statistically significant.

CONCLUSION:

The uptake of MnDPDP by HCC was correlated with hepatocyte antibody expression and the cellular density ratio. Well-differentiated HCC tended to show higher MnDPDP enhancement.

• Authors: J H Kim, M-J Kim, Y N Park, J T Lee, B R Kim, J B Chung, J S Choi, K S Kim, K W Kim
• Journal: Clinical radiology (Clin Radiol) Vol. 63 Issue 11 Pg. 1195-204 (Nov 2008) ISSN: 1365-229X [Electronic] England
• PMID: 18929037 (Publication Type: Journal Article)

Chemical References

• Contrast Media
• Pyridoxal Phosphate
• Edetic Acid
• N,N'-bis(pyridoxal-5-phosphate)ethylenediamine-N,N'-diacetic acid

Topics

• Adult
• Aged
• Carcinoma, Hepatocellular (diagnosis, pathology, surgery)
• Cell Differentiation
• Contrast Media
• Edetic Acid (analogs & derivatives)
• Female
• Humans
• Image Interpretation, Computer-Assisted (methods)
• Liver Neoplasms (diagnosis, pathology, surgery)
• Male
• Middle Aged
• Pyridoxal Phosphate (analogs & derivatives)