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PubMedID: 11287164 Aplasia or hypoplasia of the uncinate process is associated with maxillary sinus aplasia or hypoplasia. It is of particular clinical importance to recognize the presence of normal or abnormal uncinate processes in patients who will undergo surgical procedures for paranasal sinus diseases. In this report, we present a case of aplasia of bilateral uncinate processes, discuss the variations of uncinate processes, and review related literature. Copyright © 2001 Elsevier Science Ireland Ltd.

PubMedID: 11129157 A 44-year-old woman who had tuberculosis treatment 6 years earlier and a pleural decortication operation of the right lung 2 years earlier was referred for perfusion lung imaging. This revealed decreased right lung volume with faint irregular perfusion and herniation of the left lung into the right hemithorax. To the authors' knowledge, perfusion lung imaging showing herniation of one lung into the other hemithorax has not yet been described.

PubMedID: 10757008 We report a paediatric case of non-Hodgkin's lymphoma with secondary breast involvement. On US exam there were bilateral multiple well-defined masses. Contrast-enhanced thorax CT demonstrated the breast lesions as well as enhancing masses. To our knowledge, this type of lymphomatous breast involvement in a child is rare and its CT features are very rarely demonstrated.

PubMedID: 10415254 Internal biliary fistulas (IBF) are seen rarely. Because the symptoms and signs of IBF are not specific and the diagnosis is not suspected, these patients are commonly investigated with plain abdominal films (PAF), ultrasonography (US), upper gastrointestinal series (UGIS), barium enema (BE), and computed tomography (CT), but not always with endoscopic retrograde cholangiopancreatography (ERCP). The purposes of this article are (a) to attract attention of radiologists to presumptive findings of IBF, so as not to misdiagnose this unsuspected and rare disease, and (b) review of the literature while presenting radiologic features of our cases. Five cases of IBFs in which extrahepatic biliary tree communicating with duodenum (four cases) and colon (one case) are reported. Diagnostic work-up of cases were done by PAF, US, UGIS, BE, and CT. Aerobilia, which cannot be explained using other means, ectopic gallstone and small bowel dilatation, nonvisualization of the gallbladder despite no history of cholecystectomy, and thick-walled shrunken gallbladder adherent to neighboring organs were suggestive findings of IBF in our study. Knowledge of imaging findings suggestive of IBF and a high index of suspicion increase the diagnostic rate of IBFs.

PubMedID: 8183461 A 2-year-old boy with known sickle cell disease presented in acute coma. CT revealed bilateral thalamic infarcts and incomplete sinus thrombosis. Angiography confirmed thrombosis of the straight sinus and vein of Galen. © 1994 Springer-Verlag.

Calcification of gastric carcinoma is extremely rare. All reported cases corresponded to a mutinous adenocarcinoma [I], 14 cases of calcified gastric carcinoma have been reported in the English language literature up to 1984 [2]. Since the first computed tomography (CT) demonstration of a calcified gastric carcinoma reported by Nishimura in 1984,6 new cases have been reported and of these, 5 were detected by CT [ 1,3-71. Case report A CT study of a 44-year-old man with anorexia, weight loss and dysphagia, showed a gastric mass which diffusely thickened the wall and extended from cardia to pylorus. There were multiple punctate calcifications within it (Fig la,b). There were no interfaces between the mass and the diaphragm, the left hepatic lobe, or the horizontal part of the duodenum. Barium meal examination showed irregularity of the gastric wall and punctate calcifications mainly along the

S. Soyupak AE M. I nal AE F. Binokay Department of Radiology, Cukurova University Faculty of Medicine, Adana, Turkey Fig. 1 Helical CT demonstrates a bilobed lesion with an enhancing centre (with Hounsfield values equivalent to enhanced aorta) and a hypodense surrounding area. The central bile ducts are dilated Fig. 2 Multiphase dynamic CT of the liver 2 days later demonstrates that the enhancing centre of the lesion remains hypodense throughout the study Pediatr Radiol (2002) 32: 95 DOI 10.1007/s00247-001-0581-7