Invasive peritoneal disease includes more than just peritoneal carcinomatosis. Although this is the most common aetiology, especially when a primary is found, other conditions may be responsible for peritoneal invasion. A rigorous analysis of CT features taken together with the clinical and biological context usually allows the main differential diagnoses, which entail different types of management, to be drawn out. Pseudomyxoma peritonei, peritoneal lymphomatosis, tuberculosis, peritoneal mesothelioma, diffuse peritoneal leiomyomatosis, and benign splenosis are the main differential diagnoses.

No abstract

Prenatal diagnosis of Blake's pouch cyst following first-trimester observation of enlarged intracranial translucencyA 27-year-old primigravida with no relevant medical history was seen for her first prenatal appointment and first-trimester ultrasound scan at 12 + 1 weeks' gestation. The crown-rump length (CRL) was 57.8 mm and the nuchal translucency thickness was 1.3 mm. First-trimester evaluation for combined risk did not indicate that the pregnancy was at high risk for aneuploidy, with a risk of 1/10 000.Following the publications by Chaoui and Nicolaides et al. 1 -3 , we systematically measure intracranial translucency (IT) at the first-trimester scan. For this fetus the IT was 3.5 mm (Figure 1), which is well above the 95 th percentile for CRL according to established reference ranges 1 . The patient was examined again at 23 and 32 weeks' gestation. Examination of fetal anatomy at 23 weeks showed a large cyst connecting the fourth ventricle with the retrocerebellar space. The vermis was present, along with otherwise normal fetal morphology and biometry. We noted an enlargement of the fourth ventricle and an elevation of the lower part of the vermis, which was shifted away from the posterior part of the brainstem in an anticlockwise rotation (Figure 2). Using the methodology described by Guibaud and des Portes 4 for the diagnosis of anomalies of the posterior fossa, we concluded that the fetus had a persistent Blake's pouch (or Blake's pouch cyst). At the time of writing the infant was 1 month old with normal findings on neurological examination and on transfontanellar ultrasound examination performed 2 weeks after birth (Figure 3).

No abstract

Gd-BOPTA-enhanced MR cholangiography is a simple and non-invasive technique for detecting bile leakage in the post-liver transplant patient.