Hepatic calcification

Ultrasound images of Calcification occurs in the liver as a result of some pathological processes and may be seen following infection or parasitic infestation. It may be focal (usually the end stage of a previous abscess, haematoma or granuloma) which usually indicates that the lesion in question is no longer active. It may also be seen within some metastases. Calcification may also be linear in nature, following the course of the portal tracts. This can be associated with old TB or other previous parasitic infestations.
Occasionally hepatic calcification is seen in children or in the fetus. This is usually not a significant finding but prenatal infection should be excluded with a TORCH (toxoplasmosis, rubella, cytomegalovirus and HIV) screen. Calcification, which casts a strong and definite shadow, should be distinguished from air in the biliary tree (Fig. below), which casts a reverberative shadow and is  usually associated with previous biliary interventions, such as ERCP, sphincterotomy or stent placement.
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