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Focal nodular hyperplasia with retraction of liver capsule: a case report.

Ko KR, Lee DH, Park JS, Yi BH, Lim JW, Ko YT, Kim YW - Korean J Radiol (2003 Jan-Mar)

Bottom Line: Focal nodular hyperplasia (FNH) is characterized by the presence a central scar with radiating fibrous septa.Our case had a capsular retraction, which was the result of an extension of the central scar to the surface.We report the first case of FNH with a capsular retraction.

View Article: PubMed Central - PubMed

Affiliation: Department of Diagnostic Radiology, Kyung Hee University Hospital, Seoul, Korea.

ABSTRACT
Focal nodular hyperplasia (FNH) is characterized by the presence a central scar with radiating fibrous septa. Our case had a capsular retraction, which was the result of an extension of the central scar to the surface. In addition, a hypointense scar on the T2-weighted image and a minimal enhancing central scar on the enhanced T1-weighted image, which was due to dense, sclerotic collagenous tissue, were observed. We report the first case of FNH with a capsular retraction.

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Related in: MedlinePlus

A. 28-year-old woman with focal nodular hyperplasia with a retraction of the liver capsule. On hepatic helical CT scan during the portal phase, the mass shows an iso-attenuation with the liver parenchyma. The mass has a central fibrotic scar (small black arrows), and the liver capsule adjacent to the mass is retracted (large arrow).B. Contrast enhanced T1-weighted MR image reveals that the tumor is well enhanced with a minimally enhancing central scar (small black arrows). The lateral surface of the liver parenchyma adjacent to the mass is retracted (large arrow).C. The hepatic mass of segment 6 is measures approximately 3.5×5.5 cm. The cut surface of the mass reveals a nodular configuration with a central fibrous scar, extending to the liver surface (white arrow). The resected specimen shows a depressed thickened stellate scar (black arrows), slightly eccentrically positioned, with tapering fibrous septa that radiate through the mass, dividing it into multiple lobules.
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Figure 1: A. 28-year-old woman with focal nodular hyperplasia with a retraction of the liver capsule. On hepatic helical CT scan during the portal phase, the mass shows an iso-attenuation with the liver parenchyma. The mass has a central fibrotic scar (small black arrows), and the liver capsule adjacent to the mass is retracted (large arrow).B. Contrast enhanced T1-weighted MR image reveals that the tumor is well enhanced with a minimally enhancing central scar (small black arrows). The lateral surface of the liver parenchyma adjacent to the mass is retracted (large arrow).C. The hepatic mass of segment 6 is measures approximately 3.5×5.5 cm. The cut surface of the mass reveals a nodular configuration with a central fibrous scar, extending to the liver surface (white arrow). The resected specimen shows a depressed thickened stellate scar (black arrows), slightly eccentrically positioned, with tapering fibrous septa that radiate through the mass, dividing it into multiple lobules.

Mentions: CT of the abdomen showed a mass in the segment 6 measuring approximately 4.0×3.8-cm with a capsular retraction. The hepatic helical CT scan during the hepatic arterial phase showed a heterogeneously enhancing mass with a lobulated margin. A central scar was shown as a stellate hypoattenuation. The hepatic helical CT scan during the portal phase showed an isodense mass with a hypodense central scar (Fig. 1A). These findings were compatible with the focal nodular hyperplasia except for a central scar extension to the hepatic capsule causing a retraction. The T1-weighted axial MR image of the liver demonstrated a slightly hypointense mass demarcated by a thin hypointense rim with a central hypointense scar. The T2-weighted axial MR image showed a slightly hyperintense mass with a hypointense central scar. The contrast-enhanced T1-weighted axial MR image revealed a marked enhancement of the tumor with a nonenhancing central scar (Fig. 1B).


Focal nodular hyperplasia with retraction of liver capsule: a case report.

Ko KR, Lee DH, Park JS, Yi BH, Lim JW, Ko YT, Kim YW - Korean J Radiol (2003 Jan-Mar)

A. 28-year-old woman with focal nodular hyperplasia with a retraction of the liver capsule. On hepatic helical CT scan during the portal phase, the mass shows an iso-attenuation with the liver parenchyma. The mass has a central fibrotic scar (small black arrows), and the liver capsule adjacent to the mass is retracted (large arrow).B. Contrast enhanced T1-weighted MR image reveals that the tumor is well enhanced with a minimally enhancing central scar (small black arrows). The lateral surface of the liver parenchyma adjacent to the mass is retracted (large arrow).C. The hepatic mass of segment 6 is measures approximately 3.5×5.5 cm. The cut surface of the mass reveals a nodular configuration with a central fibrous scar, extending to the liver surface (white arrow). The resected specimen shows a depressed thickened stellate scar (black arrows), slightly eccentrically positioned, with tapering fibrous septa that radiate through the mass, dividing it into multiple lobules.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2698061&req=5

Figure 1: A. 28-year-old woman with focal nodular hyperplasia with a retraction of the liver capsule. On hepatic helical CT scan during the portal phase, the mass shows an iso-attenuation with the liver parenchyma. The mass has a central fibrotic scar (small black arrows), and the liver capsule adjacent to the mass is retracted (large arrow).B. Contrast enhanced T1-weighted MR image reveals that the tumor is well enhanced with a minimally enhancing central scar (small black arrows). The lateral surface of the liver parenchyma adjacent to the mass is retracted (large arrow).C. The hepatic mass of segment 6 is measures approximately 3.5×5.5 cm. The cut surface of the mass reveals a nodular configuration with a central fibrous scar, extending to the liver surface (white arrow). The resected specimen shows a depressed thickened stellate scar (black arrows), slightly eccentrically positioned, with tapering fibrous septa that radiate through the mass, dividing it into multiple lobules.
Mentions: CT of the abdomen showed a mass in the segment 6 measuring approximately 4.0×3.8-cm with a capsular retraction. The hepatic helical CT scan during the hepatic arterial phase showed a heterogeneously enhancing mass with a lobulated margin. A central scar was shown as a stellate hypoattenuation. The hepatic helical CT scan during the portal phase showed an isodense mass with a hypodense central scar (Fig. 1A). These findings were compatible with the focal nodular hyperplasia except for a central scar extension to the hepatic capsule causing a retraction. The T1-weighted axial MR image of the liver demonstrated a slightly hypointense mass demarcated by a thin hypointense rim with a central hypointense scar. The T2-weighted axial MR image showed a slightly hyperintense mass with a hypointense central scar. The contrast-enhanced T1-weighted axial MR image revealed a marked enhancement of the tumor with a nonenhancing central scar (Fig. 1B).

Bottom Line: Focal nodular hyperplasia (FNH) is characterized by the presence a central scar with radiating fibrous septa.Our case had a capsular retraction, which was the result of an extension of the central scar to the surface.We report the first case of FNH with a capsular retraction.

View Article: PubMed Central - PubMed

Affiliation: Department of Diagnostic Radiology, Kyung Hee University Hospital, Seoul, Korea.

ABSTRACT
Focal nodular hyperplasia (FNH) is characterized by the presence a central scar with radiating fibrous septa. Our case had a capsular retraction, which was the result of an extension of the central scar to the surface. In addition, a hypointense scar on the T2-weighted image and a minimal enhancing central scar on the enhanced T1-weighted image, which was due to dense, sclerotic collagenous tissue, were observed. We report the first case of FNH with a capsular retraction.

Show MeSH
Related in: MedlinePlus