Fat-containing lesions of the liver : A pictorial essay (original) (raw)

Fat-containing liver lesions: a pictorial review

Radiologia brasileira

The aim of this pictorial essay is to review the spectrum of fat-containing liver lesions and their characterisation on magnetic resonance imaging with focus on the radiological features that aid in the differential diagnoses. Fat-containing liver lesions comprise a heterogeneous group of tumours with variable imaging findings. Magnetic resonance imaging clearly displays the micro- and macroscopic fat components of the lesions and other characteristic features that are helpful tools to make the differential diagnosis.

Unusual Hepatic Lesion with Fat Fluid Level – Imaging Findings and Review of Literature

2017

Case Report: There are a variety of liver lesions, both benign and malignant, which may contain fat. The benign lesions range from focal fatty change to hepatocellular adenoma and teratoma. Malignant tumors that can contain fat primarily include hepatocellular carcinoma and primary and metastatic liposarcoma. The imaging characteristics of a lesion, enhancement pattern and pattern of intratumoral fatty change are helpful in narrowing the differential diagnosis. We present an unusual case of a 50 year old female with hepatic lesion having fat fluid level on imaging. She was investigated using 128-slice Multidetector Computed tomography (MDCT) scanner and 3mm reconstructed images in soft tissue window were viewed on vitrea workstation. The lesion had a large fat fluid level and showed no post contrast enhancement. Furthermore, MRI was done on 1.5 tesla GE machine, which confirmed the diagnosis. This case report focuses on atypical presentation of hepatic hydatid with fat flu...

Uncommon hepatic tumors: iconographic essay - Part 2

Radiologia brasileira

In cases where typical aspects are shown, the diagnosis of most frequent hepatic lesions can be made with some safety by means of several imaging methods; on the other hand, uncommon lesions generally represent a diagnostic challenge for the radiologist. In the present second part of the study, the authors describe four rare hepatic lesions, as follows: primary hepatic lymphoma, myofibroblastic tumor, primary hepatic neuroendocrine tumor and desmoplastic small round cell tumor, approaching their main characteristics and imaging findings with emphasis on computed tomography and magnetic resonance imaging.

Hepatic tumors: pitfalls in diagnostic imaging

2020

On computed tomography (CT) and magnetic resonance imaging (MRI), hepatocellular tumors are characterized based on typical imaging findings. However, hepatocellular adenoma, focal nodular hyperplasia, and hepatocellular carcinoma can show uncommon appearances at CT and MRI, which may lead to diagnostic challenges. When assessing focal hepatic lesions, radiologists need to be aware of these atypical imaging findings to avoid misdiagnoses that can alter the management plan. The purpose of this review is to illustrate a variety of pitfalls and atypical features of hepatocellular tumors that can lead to misinterpretations providing specific clues to the correct diagnoses. (www.actabiomedica.it)

MRI characterization of 124 CT-indeterminate focal hepatic lesions: evaluation of clinical utility

HPB, 2007

Objective. To evaluate the diagnostic yield of MRI performed for characterization of focal hepatic lesions that are interpreted as indeterminate on CT. Patients and methods. In a retrospective investigation, 124 indeterminate focal hepatic lesions in 96 patients were identified on CT examinations over 5 years from 1997 to 2001. All patients had MRI performed for the liver within 6 weeks of their CT examination. CT and MR images were reviewed independently by two separate groups of two radiologists. The value of MRI in characterizing these lesions was assessed. Diagnoses were confirmed based on histology, characteristic imaging features, and clinical follow-up. Results. MRI definitely characterized 73 lesions (58%) that were indeterminate on CT. MRI was accurate in 72/73 of these lesions. MRI could not definitely characterize 51 lesions (42%). Ten lesions were not visualized on MRI, and follow-up imaging confirmed that no lesion was present in eight of these cases (pseudolesions). Conclusion. MRI is valuable for the characterization of indeterminate focal hepatic lesions detected on CT.