A pseudoaneurysm of the abdominal aorta is rare, accounting for only 1% of all abdominal aneurysms. More than 1 imaging method may be needed to demonstrate an abdominal aortic pseudoaneurysm. We report a case in which the presence of continuous bidirectional flow in the neck of a pseudoaneurysm on color duplex Doppler sonography confirmed the diagnosis.

Doppler waveform changes can be found in chronic parenchymal liver disease, especially in the late stages. We investigated the contribution of Doppler ultrasound in diagnosing early-stage chronic parenchymal liver disease.In this prospective study, 30 patients who had been diagnosed with chronic liver disease (Child-Pugh class A) and 30 healthy subjects were studied. The diagnosis was confirmed with histopathologic examinations of biopsy specimens in 17 patients.The Doppler US examination of hepatic veins was performed in all the patients and healthy subjects. The Doppler US pattern was classified into three groups according to the Doppler signal characteristics: (1) type 0, triphasic waveform, the presence of a short phase of reversed flow, (2) type I, decreased amplitude of the phasic oscillations without the short phase of reversed flow, and (3) type II, complete flat waveform.Normal hepatic vein waveforms (type 0) were found in 8 patients (26.66%) and abnormal hepatic waveforms (type I + type II) in 22 patients (73.33%). The results of Doppler ultrasonography were correlated with the diagnosis of early-stage chronic parenchymal liver disease (Child-Pugh class A). In all the subjects of the control group, the Doppler waveform of hepatic veins showed the triphasic pattern (type 0).In the statistical evaluation using Fisher's exact test we observed that there was a significant difference (p < 0.05) between the control group and the patient group with respect to the presence of abnormal (type I + type II) Doppler waveform. The diagnostic accuracy in the patients who had biopsy was 76.47% and that in the patients who did not was 69.23%. (C) 1997 John Wiley & Sons, Inc.

Delay in diagnosis is common in retroperitoneal fibrosis because of the non-specific clinical presentation. Ultrasonography combined with color Doppler imaging is a rapid and practical method in the early diagnosis and during follow-up. We describe 3 cases with retroperitoneal fibrosis, emphasizing the ultrasonographic and color Doppler features of the disease.

Phytobezoars are an unusual cause of small bowel obstruction. We report a case of small bowel obstruction due to phytobezoar in a 63 year-old female patient who had undergone gastric surgery (truncal vagotomy with pyloroplasty) for duodenal ulcer disease complicated by gastric outlet obstruction 10 years ago. We diagnosed this bezoar case by radiologic methods and these methods keep their importance for the diagnosis of small bowel obstruction with phytobezoars.

ÖZET Gastrointestinal lenfomalı 24 hastanın baryumlu grafileri retrospektif olarak incelenerek radyolojik bulguları değerlendirildi. Lezyonun radyolojik görünümü ile histopatolojik tipi arasında ilişki bulunmadı. Primer intestinal formda en sık rastlanan bulgular mukozada nodüler dol­ ma defektleri, kontur düzensizliği ve tümende daralma idi. Intestinal lenfomalı vakalarda en sık etkilenen segment jejunumdu (13/24). Retroperitoneal kitlesi olan sekonder tipteki vakaların % 13'ünde ince barsak ve % 75'inde kolon grafileri tamamen normaldi. Radyolojik olarak mide lenfomalarını karslnomlardan, kolondaki lenfomatöz neoplazileri ise poliplerden ayırt etmek mümkün değildi. SUMMARY Roentgenograms of 24 patients with gastrointestinal lymphoma were examined retrospectively. There was no correlation between the radiological appearance and histopathological type of the lesion. The most common fin­ dings of the primary gastrointestinal form of lymphoma were; nodular filling defects, the irregular contours and narrowing of the lumen. Jejunum was the most common­ ly involved segment in the intestinal lymphoma (13/24). Radiologically 75% of colon and 13% of small intestine were normal in cases of secondary form with retrope­ ritoneal mass. It was impossible to differentiate gastric lymphomas from carsinomas and the lymphomatous neoplasms of colon from polyps by radiological proce­ dures.