By Alessandro Castriota-Scanderbeg, Bruno Dallapiccola
This e-book specializes in the radiographic alterations of malformation syndromes and skeletal dysplasias. it's established such that the reader can establish the radiographic adjustments and relate them to express affliction entities. the purpose is to supply an important, useful guide to the popularity of the main radiographic indicators for diagnosing malformation syndromes and skeletal dysplasias. The publication is meant for radiologists, scientific and clinical geneticists, and pediatricians. the cloth is split into components. the 1st half is dependent in a symptom-oriented shape and describes nearly 2 hundred radiographic symptoms, offering information regarding their prevalence, anatomic position, diagnostic relevance, pathogenesis, and development of inheritance, if appropriate. the second one half offers approximately a hundred syndromes and skeletal dysplasias and gives analytical details relating signs, genetics, factors, radiographic visual appeal, and significant differential prognosis.
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Additional resources for Abdominal, An Issue of Ultrasound Clinics
Radiology 1999; 210(2):405–8.  Chezmar JL, Nelson RC, Bernardino ME. Portal venous gas after hepatic transplantation: sonographic detection and clinical significance. AJR Am J Roentgenol 1989;153(6):1203–5.  Chevallier P, Peten E, Souci J, et al. Detection of portal venous gas on sonography, but not on CT. Eur Radiol 2002;12:1175–8.  Lopez-Machado E, Mallorquin-Jimenez F, Medina-Benitez A, et al. Aneurysms of the portal venous system: ultrasonography and CT findings. Eur J Radiol 1998;26:210–4.
It can be congenital in origin, or acquired in association with portal hypertension, trauma or liver transplantation. The sonographic manifestations of portal vein aneurysm include focal dilatation of the vein or a cystic mass closely related to the portal vein. On color Doppler the aneurysm demonstrates turbulent or bidirectional flow (Fig. 19) . Hepatic vein thrombosis and Budd-Chiari syndrome Fig. 17. Portal venous air found incidentally in a 49year-old woman who had a history of renal failure and HIV.
Reversal of portal venous blood flow Reversal of blood flow within the main portal vein or its branches, from the normal hepatopetal to a hepatofugal direction away from the liver parenchyma, can be a specific sign of portal hypertension and is more often present in patients who have advanced hepatic disease. An easy clue to diagnose this flow reversal is to notice that at the porta hepatic, the hepatic artery and the portal vein have blood flowing in opposite directions (Fig. 8) (Child-Pugh grade C cirrhosis) .