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2017, Number 2

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Anales de Radiología México 2017; 16 (2)

Characterization of the most common hepatic lesions by means of diffusion

Moreno-Ramírez MT, Amezcua-Herrera MC, Vega-Gutiérrez AE

Language: Spanish
References: 15
Page: 111-121
PDF size: 1847.82 Kb.


ABSTRACT

There are various imaging methods used to study hepatic lesions and magnetic resonance is one of those which provides the most information. Characterization of such lesions is based on their morphology, signal intensity, and behavior with paramagnetic contrast. Today, diffusion sequences are made to discriminate between benign and malignant hepatic lesions, without the need to use contrast media, mainly in patients with nephropathies.
Objetives: review the role of diffusion in detection, characterization, and distinction of hepatic lesions. Evaluate the usefulness of diffusion in benign and malignant hepatic lesions.
Material and Method: a retrospective, transverse, descriptive study. All patients who underwent magnetic resonance of abdomen with basic diffusion sequence to locate and characterize hepatic lesions at Hospital General de México Eduardo Liceaga, in the period March 2014 through September 2016, were included.
Results: the cohort included was made up by 48 patients: 22 men and 26 women; 22 were benign and 26 malignant, 11 corresponded to metastasis, 7 to hepatocarcinoma, 1 to embryonic sarcoma, 2 gall bladder neoplasm, 4 cholangiocarcinomas, and 1 neuroendocrine tumor; of the benign lesions 7 were abscesses, 5 hemangiomas, 5 regeneration nodules, 3 cysts, 1 hamartoma, and 1 polycystic disease. Of those lesions, only 20 presented real restrictions: 10 corresponded to metastasis, 5 to hepatocarcinoma, 1 to sarcoma, 3 to cholangiocarcinomas, and 1 to neuroendocrine tumor.
Conclusions: the diffusion sequence is useful to differentiate benign from malignant hepatic lesions; it is the most important diagnostic test after dynamic study following administration of intravenous contrast in studying hepatic lesions by magnetic resonance.


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