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It is typical of liquid injectable silicone. [3] Coarse grain snowfall, characterized by hyperechoic images distributed all over the tissue. This is typical of calcium hydroxyapatite and polymethyl methacrylate-based fillers. [4] Globular, typical "cystic" imaging, with anechoic images indicative of liquid semi-liquid content. This pattern is characteristic of polyalkylamides and polyacrylamides, and HA-based fillers immediately after their injection. The presence of "mixed" patterns is mainly due to different aesthetic procedures perform