PMC9500339_01
Ct imaging and specimen for case 1. (A) an "egg-shell" mass locating in the right subhepatic area; (B) mild enhanced on contrast-enhanced CT scans for the mass in the artery phase; (C) the resected specimen with a calcific shell; (D) homogeneous necrotic content with point calcifications.
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F1
The contrast-enhanced CT scan showed a 12 x 12 cm "egg-shelled" mass located in the hepatorenal area (Figure 1A). The content showed mild enhancements during arterial phases (Figure 1B). The resected specimen had a calculated shell (Figure 1C), which wrapped around the homogeneous necrotic content with point calcifications (Figure 1D).
PMC9500339_02
Imaging examination for case 2. (A) an "egg-shell" mass locating in the right subhepatic area; (B) the mass had a calcified edge wrapping around the homogeneous content with multipoint calcifications and calcified separations in the artery phase; (C) three-dimensional CT reconstructed imaging revealed that the right hepatic vein and hepatic pedicle were compressed from the dorsal to the ventral part (anterior); (D) three-dimensional CT reconstructed imaging (posterior).
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F2
The contrast-enhanced CT scan revealed a heterogeneous, solid mass measuring 10 x 9 x 8 cm in the right hepatic lobe (Figure 2A). The mass had a clearly calcified edge wrapping around the homogeneous content with multipoint calcifications and calcified separations (Figure 2B). Furthermore, three-dimensional CT reconstructed imaging revealed that the right hepatic vein and hepatic pedicle were involved from the dorsal to the ventral part but were not invaded into or encapsulated (Figures 2C,D).
Laparoscopic exploration and specimen for case 2. (A) an "egg-shell" mass (green arrow) arose from the retroperitoneal tissue; (B) there is a clear edge between the mass and the hepatic lobes (blue arrow); (C) the resected specimen with a calcific shell; (D) homogeneous necrotic content with point calcifications and calcified separations.
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F3
There was an obvious calcification of this mass which was pressing against the right kidney and lower right hepatic lobes (Figure 3A), the edge of which was clear (Figure 3B). It was found that the resected mass had a calcified shell (Figure 3C), which wrapped around the bleeding necrotic content with point calcifications and calcified separations (Figure 3D).