Table 4.
Imaging findings of the patients with intrahepatic sarcomatoid cholangiocarcinoma
| Case | US | CT Non-E | CT arterial | CT portal | CT delayed | Initial radiologic impression |
| 1 | Lobulated, heterogeneously hyperechoic | N/A | Thin rim enhancement | Gradual centripetal enhancement | Gradual centripetal enhancement | HCC |
| 2 | Lobulated hypoechoic | Ill-defined hypodense | Minimal to mild heterogeneous enhancement | Progressive heterogeneous enhancement | Progressive heterogeneous enhancement | HCC |
| 3 | Lobulated, heterogeneously hypoechoic internal hyperechoic | N/A | Non to minimal rim enhancement | Mild irregular rim enhancement | N/A | IHCC |
| 4 | Ill-defined hypoechoic | heterogeneously hypodense | Irregular rim enhancement | Gradual centripetal enhancement | N/A | Hepatic abscess |
| 5 | Lobulated, heterogenoeusly hypo- and hyper-echoic | N/A | Peripheral enhancement | Gradual centripetal enhancement | Gradual centripetal enhancement | HCC |
| 6 | Lobulated hyperechoic | N/A | Irregular rim enhancement | Irregular rim enhancement | N/A | IHCC |
| 7 | Lobulated, heterogeneously hypoechoic internal hyperechoic | Ill-defined hypodense | Irregular peripheral enhancement | Gradual centripetal enhancement | Gradual centripetal enhancement | HCC |
| 8 | Ill-defined heterogenoeusly hypo- and hyper-echoic | Ill-defined hypodense | Irregular peripheral enhancement | Gradual centripetal enhancement | N/A | IHCC |
| 9 | Lobulated, heterogenoeusly hypo- and hyper-echoic | N/A | Irregular peripheral enhancement | Gradual centripetal enhancement | N/A | Lymphoma |
| 10 | Lobulated, heterogeneously hyperecmoic | N/A | Minimal rim enhancement | Rim enhancement | N/A | IHCC |
| 11 | Well-defined, heterogeneously hypoechoic | Lobulated hypodense | Irregular peripheral enhancement | Irregular peripheral enhancement | N/A | IHCC |
CT: Computed tomography; HCC: Hepatocellular carcinoma; IHCC: Intrahepatic cholangiocarcinoma; N/A: Not applicable; Non-E: non-enhanced; US: Ultrasonography.