Proposal of a computed tomography classification for hepatic alveolar echinococcosis

Figure 1 Schematic representation of the calcification patterns. A: Without calcifications; B: With feathery calcifications; C: With focal calcifications; D: With a central calcification; E: With diffuse calcifications; F: With calcifications primarily at the edge.

Figure 2 Diffuse infiltrating with cystoid portion (A); without cystoid portion (B).

Figure 3 Primarily circumscribed tumor-like with cystoid portion (A); without cystoid portion (B).

Figure 4 Primarily cystoid - intermediate with more solid portions at the edge (A); without more solid portions at the edge (B).

Figure 5 Primarily cystoid - widespread with more solid portions at the edge (A); without more solid portions at the edge (B).

Figure 6 Small-cystoid/metastatic* (A, B): exclusive occurrence of the central calcification* (B).

Figure 7 Mainly calcified.

Figure 8 Frequency of primary morphologies, appended sub-criteria and individual calcification patterns, respectively.