[Liver calcifications in adults: the KUB stars are too frequently neglected in the CT era]. / Calcifications hépatiques de l'adulte: les stars de l'ASP trop souvent négligées à l'ère du scanner.

Liver calcifications have been extensively described on plain radiographs, either from KUB or angiography examinations. On the other hand, their characteristics are seldom reported on cross-sectional imaging: they are frequently considered as non-specific compared to multiple other imaging features. However, clinical practice demonstrates that in specific situations (such as parasitic infections and calcified metastases), the presence of calcifications may be a determining factor in avoiding misdiagnosis with potential deleterious effects to the patient. Both CT and US can detect a large number of "benign" calcifications without associated focal lesion and knowledge of their imaging features is useful to avoid unnecessary additional imaging work-up. A review of the literature and a series of 100 cases of liver calcifications on CT are presented to review the imaging features of calcified liver lesions and isolated liver calcifications without associated focal lesion.

[Imaging of the postoperative biliary tract]. / Imagerie des voies biliaires opérées.

For a long time, imaging of the biliary tract after surgical procedures was performed with invasive procedures such as endoscopic retrograde cholangiopancreatography or percutaneous transhepatic cholangiography. Due to recent advances in diagnostic imaging, non-invasive techniques are now favored. While US remains the initial imaging modality, it is frequently followed by CT and/or MRCP. Image interpretation should always be performed in keeping with clinical and laboratory findings as well as the type of surgical procedure. The most appropriate imaging modality is selected based on these data. In patients with jaundice or biliary tract stenosis, MRCP, with use of an optimal technique and 3D acquisition, is the imaging modality of choice. In non-jaundiced patients with non-distended biliary tract and suspected bile leak, MRCP should be completed by the injection of a liver-specific contrast agent with biliary excretion to achieve non-invasive biliary tract opacification. In patients with malignancy, CT is preferred due to its high spatial resolution and ability to demonstrate small anastomotic tumor recurrences. CT should also be performed in patients with suspected hepatic artery or portal vein injury in addition to biliary tract injury or to detect distant complications.

[Pulmonary artery sarcoma during postpartum: CT findings]. / Sarcome de l'artère pulmonaire dans le post-partum: aspects scanographiques.

We report the case of a 28 year-old female, who gave birth seven weeks previously, presenting with a pulmonary artery leiomyosarcoma discovered on a thoracic CT performed for clinical suspicion of pulmonary embolism. This case presents two major points of interest: on the first hand, it is a particular context (young post-partum patient), with classic symptoms of routine pulmonary embolism. On the other hand, the exam clearly demonstrates tumor enhancement, which is characteristic but rarely described.