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Exophytic benign and malignant hepatic tumors: CT imaging features.

Kim HJ, Lee DH, Lim JW, Ko YT, Kim KW - Korean J Radiol (2008 Jan-Feb)

Bottom Line: The beak sign and the feeding artery of a tumor are useful diagnostic indicators of exophytic hepatic tumors.Two- or three-dimensional reformation images are also helpful for diagnosis.The CT features of exophytic hepatic tumors are similar to those of the usual intrahepatic tumors except for their location.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Kyung Hee University Medical Center, Dongdaemun-Gu, Seoul, Korea. radhjkim@khu.ac.kr

ABSTRACT
Our objective is to describe the CT features of exophytic hepatic tumors those may pose a diagnostic challenge because of the uncertainty of tumor origin. The beak sign and the feeding artery of a tumor are useful diagnostic indicators of exophytic hepatic tumors. Two- or three-dimensional reformation images are also helpful for diagnosis. The CT features of exophytic hepatic tumors are similar to those of the usual intrahepatic tumors except for their location.

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Related in: MedlinePlus

A 53-year-old woman with a pedunculated hemangioma.A. A contrast-enhanced CT scan during hepatic arterial phase shows a small nodular lesion (arrow) adjacent to the greater curvature side of the stomach. There is a vascular pedicle (arrowheads) connecting nodule with the lateral segment (prominent feeding artery sign). It shows dense peripheral enhancement.B. A contrast-enhanced CT scan during portal venous phase shows centripetal enhancement of this small nodule (arrow).
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Figure 3: A 53-year-old woman with a pedunculated hemangioma.A. A contrast-enhanced CT scan during hepatic arterial phase shows a small nodular lesion (arrow) adjacent to the greater curvature side of the stomach. There is a vascular pedicle (arrowheads) connecting nodule with the lateral segment (prominent feeding artery sign). It shows dense peripheral enhancement.B. A contrast-enhanced CT scan during portal venous phase shows centripetal enhancement of this small nodule (arrow).

Mentions: The majority of hepatic hemangiomas identified on CT can be diagnosed accurately by CT examinations alone from the characteristic imaging features of these lesions. On hepatic artery phase dynamic CT, they show peripheral nodular or globular enhancement (4). With time, contrast enhancement progresses centripetally (4). The reported incidence of exophytic hemangiomas was about 12% in cirrhotic patients (5). However, pedunculated hemangiomas are very rare (6). Pedunculated hemangiomas can be asymptomatic or can be complicated by torsion and infarction. Pedunculated exophytic hemangiomas may show a thin pedicle that contains a feeding artery and draining vein, and this pedicle connects the hemangioma to the liver (Fig. 3). Other usual exophytic hemangiomas just show the beak sign (Fig. 4).


Exophytic benign and malignant hepatic tumors: CT imaging features.

Kim HJ, Lee DH, Lim JW, Ko YT, Kim KW - Korean J Radiol (2008 Jan-Feb)

A 53-year-old woman with a pedunculated hemangioma.A. A contrast-enhanced CT scan during hepatic arterial phase shows a small nodular lesion (arrow) adjacent to the greater curvature side of the stomach. There is a vascular pedicle (arrowheads) connecting nodule with the lateral segment (prominent feeding artery sign). It shows dense peripheral enhancement.B. A contrast-enhanced CT scan during portal venous phase shows centripetal enhancement of this small nodule (arrow).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2627168&req=5

Figure 3: A 53-year-old woman with a pedunculated hemangioma.A. A contrast-enhanced CT scan during hepatic arterial phase shows a small nodular lesion (arrow) adjacent to the greater curvature side of the stomach. There is a vascular pedicle (arrowheads) connecting nodule with the lateral segment (prominent feeding artery sign). It shows dense peripheral enhancement.B. A contrast-enhanced CT scan during portal venous phase shows centripetal enhancement of this small nodule (arrow).
Mentions: The majority of hepatic hemangiomas identified on CT can be diagnosed accurately by CT examinations alone from the characteristic imaging features of these lesions. On hepatic artery phase dynamic CT, they show peripheral nodular or globular enhancement (4). With time, contrast enhancement progresses centripetally (4). The reported incidence of exophytic hemangiomas was about 12% in cirrhotic patients (5). However, pedunculated hemangiomas are very rare (6). Pedunculated hemangiomas can be asymptomatic or can be complicated by torsion and infarction. Pedunculated exophytic hemangiomas may show a thin pedicle that contains a feeding artery and draining vein, and this pedicle connects the hemangioma to the liver (Fig. 3). Other usual exophytic hemangiomas just show the beak sign (Fig. 4).

Bottom Line: The beak sign and the feeding artery of a tumor are useful diagnostic indicators of exophytic hepatic tumors.Two- or three-dimensional reformation images are also helpful for diagnosis.The CT features of exophytic hepatic tumors are similar to those of the usual intrahepatic tumors except for their location.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Kyung Hee University Medical Center, Dongdaemun-Gu, Seoul, Korea. radhjkim@khu.ac.kr

ABSTRACT
Our objective is to describe the CT features of exophytic hepatic tumors those may pose a diagnostic challenge because of the uncertainty of tumor origin. The beak sign and the feeding artery of a tumor are useful diagnostic indicators of exophytic hepatic tumors. Two- or three-dimensional reformation images are also helpful for diagnosis. The CT features of exophytic hepatic tumors are similar to those of the usual intrahepatic tumors except for their location.

Show MeSH
Related in: MedlinePlus