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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 44-year-old man with exophytic hepatic metastasis from rectal cancer. A contrast-enhanced CT scan shows multiple low density masses in the liver of a patient with rectal cancer (not shown). A low density mass is seen adjacent to the lateral segment. The beak sign (arrow) is noted in its contact surface with the lateral segment.
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Figure 11: A 44-year-old man with exophytic hepatic metastasis from rectal cancer. A contrast-enhanced CT scan shows multiple low density masses in the liver of a patient with rectal cancer (not shown). A low density mass is seen adjacent to the lateral segment. The beak sign (arrow) is noted in its contact surface with the lateral segment.

Mentions: Metastases are by far the most common malignant tumors of the liver. The CT appearance depends on the tumor size, the vascularity, and the degree of hemorrhage and necrosis. Although a single metastasis or oligonodular involvement may be seen, multiple metastatic lesions are the general rule. If one considers that various benign and malignant hepatic tumors may show exophytic growth, it is not surprising that a metastasis may show exophytic growth. Multiplicity and a known or suspicious primary site are the keys to reach a correct diagnosis (Fig. 11).


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 44-year-old man with exophytic hepatic metastasis from rectal cancer. A contrast-enhanced CT scan shows multiple low density masses in the liver of a patient with rectal cancer (not shown). A low density mass is seen adjacent to the lateral segment. The beak sign (arrow) is noted in its contact surface with the lateral segment.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 11: A 44-year-old man with exophytic hepatic metastasis from rectal cancer. A contrast-enhanced CT scan shows multiple low density masses in the liver of a patient with rectal cancer (not shown). A low density mass is seen adjacent to the lateral segment. The beak sign (arrow) is noted in its contact surface with the lateral segment.
Mentions: Metastases are by far the most common malignant tumors of the liver. The CT appearance depends on the tumor size, the vascularity, and the degree of hemorrhage and necrosis. Although a single metastasis or oligonodular involvement may be seen, multiple metastatic lesions are the general rule. If one considers that various benign and malignant hepatic tumors may show exophytic growth, it is not surprising that a metastasis may show exophytic growth. Multiplicity and a known or suspicious primary site are the keys to reach a correct diagnosis (Fig. 11).

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