Fat-Containing Lesions of the Liver: Cross-Sectional Imaging Findings with Emphasis on MRI
Ceyla Basaran1,
Musturay Karcaaltincaba1,
Deniz Akata1,
Nevzat Karabulut2,
Devrim Akinci1,
Mustafa Ozmen1 and
Okan Akhan1
1 Department of Radiology, Hacettepe University School of Medicine, Sihhiye,
Ankara 06100, Turkey.
2 Department of Radiology, Pamukkale University Hospital, Denizli, Turkey.
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Fig. 1A. —50-year-old woman with breast cancer. Axial CT image shows
diffuse fatty infiltration of liver and hypodense lesion (arrow)
suspicious for metastasis in segment IV.
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Fig. 1B. —50-year-old woman with breast cancer. Axial in-phase
(B) and out-of-phase (C) images show greater signal drop of
lesion in C (arrow, C), consistent with hypersteatosis
(more fatty) compared with diffusely fatty infiltrated liver.
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Fig. 1C. —50-year-old woman with breast cancer. Axial in-phase
(B) and out-of-phase (C) images show greater signal drop of
lesion in C (arrow, C), consistent with hypersteatosis
(more fatty) compared with diffusely fatty infiltrated liver.
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Fig. 2A. —45-year-old woman who had prior ovarian cancer surgery and
multiple liver lesions. Sonogram shows multiple hyperechogenic lesions.
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Fig. 2B. —45-year-old woman who had prior ovarian cancer surgery and
multiple liver lesions. Axial T1-weighted in-phase (B) and out-of-phase
(C) images show multiple lesions with signal drop on opposed-phase
images consistent with focal fatty infiltrations. MR images were obtained on
0.5-T MRI system with TEs of 14 and 6 for in- and out-of-phase images,
respectively.
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Fig. 2C. —45-year-old woman who had prior ovarian cancer surgery and
multiple liver lesions. Axial T1-weighted in-phase (B) and out-of-phase
(C) images show multiple lesions with signal drop on opposed-phase
images consistent with focal fatty infiltrations. MR images were obtained on
0.5-T MRI system with TEs of 14 and 6 for in- and out-of-phase images,
respectively.
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Fig. 3A. —78-year-old man with cirrhosis. Axial in-phase (A) and
out-of-phase (B) MR images show signal drop of lesion (arrow)
in segment V.
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Fig. 3B. —78-year-old man with cirrhosis. Axial in-phase (A) and
out-of-phase (B) MR images show signal drop of lesion (arrow)
in segment V.
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Fig. 3C. —78-year-old man with cirrhosis. Arterial (C) and
delayed (D) phase axial gadolinium-enhanced MR images show
hypervascularity and contrast washout of hepatocellular carcinoma
(arrow), respectively.
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Fig. 3D. —78-year-old man with cirrhosis. Arterial (C) and
delayed (D) phase axial gadolinium-enhanced MR images show
hypervascularity and contrast washout of hepatocellular carcinoma
(arrow), respectively.
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Fig. 4A. —54-year-old woman with hepatic adenoma. Axial T1-weighted
in-phase (A) and out-of-phase (B) images show signal drop of
peripheral lesion (arrow, B).
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Fig. 4B. —54-year-old woman with hepatic adenoma. Axial T1-weighted
in-phase (A) and out-of-phase (B) images show signal drop of
peripheral lesion (arrow, B).
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Fig. 4C. —54-year-old woman with hepatic adenoma. MR image shows
enhancing lesion (arrow) in arterial phase, consistent with
adenoma.
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Fig. 5. —29-year-old woman with tuberous sclerosis. Axial CT image
shows fat-containing liver lesion (arrow) consistent with hepatic
angiomyolipoma. Note bilateral multiple renal angiomyolipomas.
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Fig. 6. —58-year-old man with an incidentally found echogenic liver
lesion. Axial CT image shows pure fat-containing lesion consistent with lipoma
(arrow). Note peripheral location of lesion.
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Fig. 7. —45-year-old woman with acute leukemia. Axial CT image shows
fat-containing lesion (arrows) in right lobe extending to caudate
lobe that was not present on CT 1 year ago. Attenuation measurement of lesion
revealed -32 H. Biopsy of lesion revealed hepatic necrosis with fatty
replacement consistent with lipopeliosis.
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Fig. 8. —30-year-old woman with liver hydatid disease. Axial CT image
shows two liver hydatid cysts. Note hypodense fat droplets (-25 H) within
medially located cyst (arrow).
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Fig. 9. —40-year-old woman with prior hydatid cyst surgery. Axial CT
image shows fat-containing lesion (arrow) consistent with omentopexy
area due to prior surgery for hydatid cyst.
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Fig. 10A. —45-year-old man with abdominal pain who underwent CT
examination. Axial CT image shows fatty lesion (arrow) adjacent to
intrahepatic inferior vena cava.
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Fig. 10B. —45-year-old man with abdominal pain who underwent CT
examination. Sagittal reformatted image shows protrusion of apical portion of
pericaval fat into inferior vena cava lumen (arrow).
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Copyright © 2005 by the American Roentgen Ray Society.
