Pneumatosis cystoides intestinalis (PCI) is a rare condition that may be associated with a variety of diseases. The presenting clinical picture may be very heterogeneous and represent a challenge for the clinician. In the present paper we describe both a common and an uncommon clinical presentation of PCI and review the pertaining literature. Our cases confirm that, apart from asymptomatic cases, the clinical presentation of PCI may be widely different and suggest that a new onset of stipsis might be the presenting symptom. Diagnosis might be suggested by a simple X-ray of the digestive tract showing a change in the characteristics of the intestinal wall in two-thirds of these patients. However, one third of the patients do not have a suggestive X-ray and require a computed tomography (CT) scan/nuclear magnetic resonance that may reveal a thickened bowel wall containing gas to confirm the diagnosis and distinguish PCI from intraluminal air or submucosal fat. CT also allows the detection of additional findings that may suggest an underlying, potentially worrisome cause of PCI such as bowel wall thickening, altered contrast mucosal enhancement, dilated bowel, soft tissue stranding, ascites and the presence of portal air. Our results also point out that clinicians and endoscopists should be aware of the possible presentations of PCI in order to correctly manage the patients affected with this disease and avoid unnecessary surgeries. The increasing number of colonoscopies performed for colon cancer screening makes PCI more frequently casually encountered and/or provoked, therefore the possible endoscopic appearances of this disease should be well known by endoscopists.
KEYWORDSUltrasonography; Contrast agent; Abdominal trauma.Abstract Introduction: To evaluate the use of contrast-enhanced ultrasonography (CEUS) in patients with blunt abdominal trauma. Materials and methods: A total of 133 hemodynamically stable patients were evaluated using ultrasonography (US), CEUS and multislice Computer Tomography (CT) da eliminare. Results: In 133 patients, CT identified 84 lesions: 48 cases of splenic injury, 21 of liver injury, 13 of kidney or adrenal gland injury and 2 of pancreatic injury. US identified free fluid or parenchymal abnormalities in 59/84 patients positive at CT and free fluid in 20/49 patients negative at CT. CEUS revealed 81/84 traumatic injuries identified at CT and ruled out traumatic injuries in 48/49 negative at CT. Sensitivity, specificity, positive and negative predictive values for US were 70.2%, 59.2%, 74.7% and 53.7%, respectively; for CEUS the values were 96.4%, 98%, 98.8% and 94.1%, respectively. Conclusions: The study showed that CEUS is more accurate than US and nearly as accurate as CT, and CEUS can therefore be proposed for the initial evaluation of patients with blunt abdominal trauma.Sommario Introduzione: Descrivere l'impiego dell'ecografia con mezzo di contrasto (CEUS) nella valutazione dei pazienti con trauma chiuso dell'addome. Materiali e Metodi: 133 pazienti con trauma addominale chiuso emodinamicamente stabile sono stati esaminati con ecografia (US), CEUS e Tomografia Computerizzata multistrato (TC) da eliminare. Risultati: I 133 pazienti avevano alla TC 84 lesioni, di cui 48 spleniche, 21 epatiche, 13 renali o dei surreni e 2 del pancreas. L'US ha identificato versamento libero o alterazioni parenchimali in 59/84 pazienti positivi alla TC e versamento libero in 20/49 pazienti negativi alla TC. La CEUS ha riconosciuto 81/84 lesioni traumatiche identificate dalla TC e ha escluso lesioni traumatiche in 48/49 pazienti negativi alla TC. Sensibilità, specificità, valore predittivo positivo e negativo per l'US sono stati rispettivamente 70.2%, 59.2%, 74.7% e 53.7%; per la CEUS sono stati 96.4%, 98%, 98.8% e 94.1%. Conclusioni: Lo studio ha dimostrato che la CEUS ha una accuratezza diagnostica maggiore dell'US e quasi sovrapponibile alla TC e può quindi essere proposta nella valutazione iniziale del paziente traumatizzato. ª
We report a 5-year-old child with pancreatic trauma from a blunt abdominal injury that was monitored with contrast-enhanced sonography. Unenhanced US failed to demonstrate the abnormality that was recognized by CT and MRI. The injury was well demonstrated by contrast-enhanced US which was therefore used for follow-up until its healing.
Mycotic aneurysms of the thoracic aorta rarely occur in children. We report an unusual case of a mycotic aneurysm of the descending aorta in a 4-year-old boy presenting with respiratory tract infection, which was rapidly complicated by atelectasis of the left lung. The patient's mycotic aortic aneurysm was diagnosed by contrast-enhanced spiral CT, whereas conventional chest radiographs did not detect its presence. An unsuspected mild aortic coarctation was also diagnosed at the time of admission. This case demonstrates that an aortic aneurysm may clinically and radiologically manifest itself with respiratory tract infection and atelectasis and that contrast-enhanced spiral CT is a fast and powerful tool for establishing the diagnosis.
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