Table 2 Literature review and radiological data analysis
Author/Year | Malignant transformation | Location | Number of lesions | Size(cm) | Shape | Margin | US | CT | MRI | Internal septa | Enhancement | Liver contour | Bile duct communication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Akin et al. [6]/2002 | Yes | Subcapsular area of right lobe | Multiple | 14 | Lobulated | Obscure | — | — | — | Unilocular | Enhancement in arterial phase and early washout in portal phase | Protrusion | No |
Garduño-López et al. [19]/2002 | No | Subcapsular area of left lobe | Solitary | 6 | Lobulated | Well-defined | hypoechoic lesion | Solid-cystic mass | — | Multilocular | — | Protrusion | No |
Varnholt et al. [20]/2003 | No | Subcapsular area of left lobe | Solitary | 16 | Lobulated | — | cystic and solid mass with areas of increased echogenicity | Solid-cystic mass | — | Multilocular | — | Protrusion | No |
Kai et al. [7]/2010 | Yes | Subcapsular area of right lobe | Solitary | 7 | Lobulated | Well-defined | — | Multicystic mass lesion | — | Multilocular | Gradual enhancement | Protrusion | No |
Tsutsui et al. [9]/2014 | Yes | Subcapsular area of right lobe | Solitary | 3.5 | Lobulated | — | hyperechoic nodule with small hypoechoic | hypodense solid-cystic mass; | T1WI: low intensity; T2WI: high intensity and low intensity septa; DWI: markedly high intensity | Multilocular | One part: enhancement in arterial phase and early washout in portal phase; another part: early and prolonged enhancement | Protrusion | No |
Jacobs et al. [10]/2015 | Yes | Subcapsular area of right lobe | 2 | 11.8 | Lobulated | — | — | Heterogeneous, predominantly hypodense mass | — | Multilocular | — | Protrusion | No |
Elpek et al. [32]/2016 | No | — | Solitary | 6 | — | Well-defined | — | Multicystic mass lesion containing solid areas | — | Multilocular | — | — | — |
Godambe et al. [11]/2016 | Yes | Subcapsular area of left lobe | Solitary | 6.3 | — | — | — | — | — | Multilocular | Heterogeneous enhancement in arterial phase | — | — |
Thai et al. [12]/2016 | Yes | Subcapsular area of left lobe | Solitary | 4 | Targetoid | — | — | A targetoid lesion with a peripheral edematous halo and a necrotic central area | — | Unilocular | — | — | No |
Thompson et al .[13]/2016 | Yes | Subcapsular area of left lobe | Solitary | 14.5 | Lobulated | Well-defined | — | — | T2WI: heterogeneously increased signal; T1WI:isointensity to hypointensity | Multilocular | Enhancement in arterial phase and early washout in portal phase some regions: retention of contrast in delayed phase | Protrusion | No |
Thompson et al.[13]/2016 | Yes | Subcapsular area of caudate lobe | Solitary | 6.6 | Lobulated | Well-defined | — | — | T2WI: heterogeneously increased signal; DWI: restricted diffusion | Multilocular | Peripheral enhancement on delayed imaging | Protrusion | No |
Kaminsky et al. [14]/2016 | Yes | Subcapsular area of right lobe | Solitary | 4.9 | Lobulated | — | — | — | T1WI: hypointense, T2WI: heterogeneously hyperintense | Multilocular | Peripheral enhancement | Protrusion | No |
Chua et al. [15]/2018 | Yes | Subcapsular area of left lobe | Solitary | — | — | — | — | — | DWI: restricted diffusion | — | Enhancement in arterial phase and early washout and pseudocapsule formation in portal phase | — | — |
Lee et al. [17]/2019 | No | Subcapsular area of segments IV and VIII | Solitary | 4.7 | Lobulated | Well-defined | — | — | T1WI: low signal intensity; T2WI: bright signal intensity tumor with hypointense septa | Multilocular | Septal enhancement in delayed phase | Protrusion | No |
Lee et al. [17]/2019 | No | Subcapsular area of left lobe | Solitary | 2.7 | Lobulated | Well-defined | — | low attenuation | T1WI: hypointensity; T2WI: bright signal intensity | Multilocular | Septal and wall enhancement in portal venous phase | Protrusion | No |
Sturm et al. [16]/2019 | Yes | Subcapsular area of left lobe | Solitary | 6.3 | Lobulated | — | — | Solid-cystic mass | — | Multilocular | — | Protrusion | No |
Present case /2021 | Yes | Subcapsular area of right lobe | Solitary | 1.8 cm | Irregular | Well-defined | hypoechoic subcapsular nodule | Hypodense solid-cystic mass | — | Unilocular | Enhancement in arterial phase and early washout in portal phase | Retraction | No |