what is diffuse Hypodensity liver?

Answer 1

From the description I assume you mean this was on a CT scan... if not, then i'm not sure.

Anyway, diffuse hypodensity (correctly should be hypoattenuation) is almost always due to fatty infiltration of the liver.

This is most commonly due to dietary issues (too much fatty food), excessive alcohol intake, elevated triglycerides in the blood, taking steroid medication, among other things

Answer 2

Hypoattenuating

Answer 3

Recent advances in the development of MR systems and IV contrast media have strengthened the role of MR imaging in the evaluation of focal lesions of the liver. Such lesions include hepatocellular carcinoma, hemangioma, and metastasis. MR imaging also provides information on diffuse parenchymal abnormalities and multifocal involvement in multiorgan and systemic diseases. We present a diagnostic approach to diffuse liver disease using MR imaging. Additionally, we discuss the distribution, signal intensities, and appearances of each hepatic disorder.

For practical analysis, we divided diffuse liver disease into four categories on the basis of patterns of distribution and abnormal signal intensity: diffuse homogeneous distribution, segmental distribution, nodular distribution, and perivascular distribution. Homogeneous distribution involves disorders of hepatocytes and reticuloendothelial cells. Parenchymal signal intensity in the liver may appear as homogeneous high or low signal intensity on T1- or T2-weighted MR images (Fig. 1A). Segmental distribution of abnormal signal intensity (hepatic perfusion) involves disorders such as segmental fatty liver and focal confluent segmental fibrosis resulting from subacute hepatitis (Fig. 1B). Nodular distribution is characterized by multiple abnormal nodular intensities and includes disorders (e.g., cirrhosis, Wilson's disease, and sarcoidosis) that cause numerous nodular lesions corresponding to iron deposits in regenerative nodules or granulomas (Fig. 1C). Disorders of perivascular distribution involve the periportal lymphatic channel and Glisson's capsules (Fig. 1D). Congestive liver and Budd-Chiari syndrome are usually associated with periportal high signal intensity of the liver, and schistosomiasis japonica can affect Glisson's capsules, resulting in septal or capsular high intensity on T2-weighted MR images.