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1.
Gallstone ileus: CT findings 总被引:6,自引:0,他引:6
Gallstone ileus is a rare complication of recurrent gallstone cholecystitis. The classic radiographic triad of small bowel
obstruction, pneumobilia and ectopic gallstone on abdominal plain radiograph is described with CT imaging. Because of the
better resolution of CT compared with abdominal radiography and its recent accession to emergency use, radiologists should
be aware of CT findings of gallstone ileus. We report a case in which gallstone ileus was initially diagnosed by CT.
Received: 30 July 1999; Revised: 18 October 1999; Accepted: 18 October 1999 相似文献
2.
Jafar Golzarian Nicole Nicaise Jacques Devière Marc Ghysels Didier Wery Luc Dussaussois Daniel Van Gansbeke Julien Struyven 《Cardiovascular and interventional radiology》1997,20(6):435-440
Purpose: To evaluate the therapeutic role of angiography in patients with pseudoaneurysms complicating pancreatitis.
Methods: Thirteen symptomatic pseudoaneurysms were treated in nine patients with pancreatitis. Eight patients had chronic pancreatitis
and pseudocyst and one had acute pancreatitis. Clinical presentation included gastrointestinal bleeding in seven patients
and epigastric pain without bleeding in two. All patients underwent transcatheter embolization.
Results: Transcatheter embolization resulted in symptomatic resolution in all patients. Rebleeding occurred in two patients, 18 and
28 days after embolization respectively, and was successfully treated by repeated emnbolization. One patient with severe pancreatitis
died from sepsis 28 days after embolization. Follow-up was then available for eight patients with no relapse of bleeding after
a mean follow-up of 32 months (range 9—48 months).
Conclusion: Transcatheter embolization is safe and effective in the management of pseudoaneurysms complicating pancreatitis.
Received: 0/00/00/Accepted: 0/00/00 相似文献
3.
Omental infarction associated with right-sided heart failure 总被引:2,自引:0,他引:2
A 31-year-old man with a known congenital heart disease presented with cardial decompensation and an acute abdomen with tenderness
in the right inferior abdominal quadrant. Because infectious parameters were slightly elevated, acute appendicitis was suspected.
A CT scan showed an isolated focal infiltration of the omentum, superficial to the ascending colon, small amounts of ascites,
and dilated hepatic and mesenteric veins. Laparoscopic resection and histopathologic examination confirmed hemorrhagic omental
infarction due to thromboses of several small omental veins. This is a report on the pathogenesis, differential diagnoses,
and CT findings of omental infarction.
Received: 14 July 1999; Revised: 12 October 1999; Accepted: 4 November 1999 相似文献
4.
Sato M Ishida H Konno K Naganuma H Komatsuda T Hamashima Y Watanabe S 《European radiology》2000,10(2):362-364
Congenital absence of the horizontal portion of the left portal vein is very rare and has been very reported sporadically.
We present three such cases referred from other hospitals with a diagnosis of intrahepatic vascular anomaly. Color Doppler
ultrasound not only confirmed the diagnosis but also allowed a quantitative measurement of blood flow in these cases. Although
it is a very rare condition, knowledge of the ultrasound and color Doppler findings helps in establishing the diagnosis of
this congenital anomaly.
Received: 9 July 1999; Revised: 25 October 1999; Accepted: 25 October 1999 相似文献
5.
Coronary arteriovenous fistula are uncommon if not rare, but represent the most prevalent hemodynamically significant congenital
malformations of the coronary arterial circulation. The goal of this report is to evaluate the use of 3D volume rendering
from transaxial breathhold coronary MR angiograms to visualize coronary arteriovenous fistulas. Coronary MR angiography offers
a new non-invasive technique that accurately defines the anatomy of these malformations, setting the stage for surgical intervention.
Received: 15 July 1999; Revised: 13 October 1999; Accepted: 15 October 1999 相似文献
6.
To prove the usefulness of a simple laser marker system (LMS) in target definition as well as examination procedure for CT-guided
interventions, 130 cases of diagnostic biopsies and lumbal sympathectomies were compared. In 75 cases LMS and in 55 cases
a simple crossgrid was used. Taking advantage of the LMS, the parameters of intervention (cutaneous location, length, and
angle) can be planned, exactly demonstrated, and it is possible to check the needle position during the whole procedure. Thus,
the number of necessary control scans decreased to 30 %, and corrections of needle location were reduced to approximately
30 %. Moreover, the average target deviation of the needle decreased below 5 mm in 50 % of cases, and the duration of interventional
procedure was reduced considerably. It can be concluded that LMSs are recommended in CT-guided interventions for quality assurance,
dose reduction, and improvement of handling. It will be especially advantageous in cases of small target volume, oblique needle
path, and tilted gantry.
Received: 1 July 1999; Revised: 19 October 1999; Accepted: 25 October 1999 相似文献
7.
We present a case of concurrence of ectopic adrenal cortex with a renal cell carcinoma. The diagnosis of the accessory adrenal
tissue was made by CT-guided biopsy. With this case report, we draw attention to a specific differential diagnostic problem,
policy and to the MR characteristics of ectopic adrenal cortex.
Received: 10 August 1999; Revised: 21 October 1999; Accepted: 27 October 1999 相似文献
8.
Ide C De Coene B Mailleux P Baudrez V Ossemann M Trigaux JP 《European radiology》2000,10(12):1865-1870
We present the characteristic imaging findings of hypoplasia of the internal carotid artery (ICA) in two cases, one accompanied
by an intracranial aneurysm. Finding of a diffuse luminal narrowing of the ICA on MR angiography or digital subtraction angiography
(DSA) could wrongly evoke severe acquired diseases such as dissection or atherosclerosis. Absence of associated wall thickening
and flow disturbances on color Doppler sonography (CDS) should suggest carotid hypoplasia. Confirmation of the diagnosis is
obtained by CT of the skull showing a small carotid canal. Non-invasive procedures are sufficient to differentiate this rare
congenital anomaly from acquired string signs.
Received: 25 October 1999; Revised: 27 January 2000; Accepted: 30 March 2000 相似文献
9.
Mortelé B Lemmerling M Mortelé K Verstraete K Defreyne L Kunnen M Vandekerckhove T 《European radiology》2000,10(6):967-969
A case of cervical chordoma in a 36-year-old white man with hypoesthesia in the neck and right shoulder, neck pain, and restricted
neck mobility is presented. Plain radiographs of the cervical spine showed radiolucency of the body of C2 on the right side
and enlargement of the right intervertebral foramen at C2–C3 level. Tumor encasement of the vertebral artery was demonstrated
by MR imaging and confirmed by conventional arteriography. This proved to be particularly important for preoperative assessment.
Received: 8 February 1999; Revised: 26 October 1999; Accepted: 18 November 1999 相似文献
10.
Krainik A Sarrazin JL Camparo P Vincendeau S Houlgatte A Cordoliani YS 《European radiology》2000,10(10):1636-1638
We report the case of a 25-year-old man who presented a fibrous pseudotumor of the epididymis, a rare focal location of nodular
and diffuse fibrous proliferation. We provide the ultrasonographic and MRI findings with pathologic correlation.
Received: 8 October 1999; Revised: 25 January 2000; Accepted: 1 February 2000 相似文献
11.
A patient with neurofibromatosis type 1 was found to have an enhancing mass in the hypothalamus and in the anterior optic
pathway. A 3-month MR study showed a reduction in the size and enhancement of the mass. At a 9-month MR follow-up the mass
disappeared and ceased to enhance. This report shows the unusual behaviour of a hypothalamic/chiasmatic mass confirming that
in such asymptomatic cases the conservative management can be considered the treatment of choice.
Received: 27 July 1999; Revised: 20 October 1999; Accepted: 19 November 1999 相似文献
12.
We report on a 46-year-old patient in whom an intracranial dural arteriovenous (AV) fistula, supplied by a branch of the
ascending pharyngeal artery, drained into spinal veins and produced rapidly progressive symptoms of myelopathy and brainstem
dysfunction including respiratory insufficiency. Magnetic resonance imaging studies demonstrated brainstem oedema and dilated
veins of the brainstem and spinal cord. Endovascular embolization of the fistula led to good neurological recovery, although
the patient had been paraplegic for 24 h prior to embolization. This case demonstrates the MRI characteristics of an intracranial
dural AV fistula with spinal drainage and illustrates the importance of early diagnosis and treatment. Even paraplegia may
be reversible, if angiography is performed and the fistula treated before ischaemic and gliotic changes become irreversible.
Received: 25 May 1999; Revised: 25 January 2000; Accepted: 15 February 2000 相似文献
13.
Chatziioannou AN Johnson ME Pneumaticos SG Lawrence DD Carrasco CH 《European radiology》2000,10(4):593-596
The purpose of this study was to correlate the effectiveness of preoperative embolization with the blood loss and transfusion
requirement during surgery for bone metastases from renal cell carcinoma. Twenty-eight preoperative embolizations in 26 patients
with renal cell carcinoma metastatic to bone were retrospectively evaluated and divided into two groups: Group A included
the embolizations that resulted in complete devascularization of the lesion as defined by the post-embolization arteriograms,
and group B included those with an incomplete result. The two groups were compared with regard to blood loss and transfusion
requirement during surgery, by unpaired two-tailed Student's t-test. Where complete embolization was effected (group A, 10 cases), there was a mean blood loss of 535 ± 390 ml. When a less
than complete embolization was achieved (group B, 18 cases), the mean blood loss was 1.247 ± 1.047 ml (p = 0.049). The red blood cell transfusion in group A was 1.3 ± 1 units, whereas in group B it was 2.4 ± 1.2 (p = 0.03). Preoperative embolization of bone metastases from renal cell carcinoma with subsequent complete devascularization
leads to significant reduction of blood loss during surgery. Interventional radiologists should pursue and embolize every
feeder to the metastasis, because any less than complete devascularization increases the amount of blood loss and the amount
of red blood cell transfusion during surgery.
Received: 23 June 1998; Revised: 20 November 1998; Accepted: 24 February 1999 相似文献
14.
A case of the rare condition of renal and retroperitoneal actinomycosis is presented. The clinical and imaging (ultrasonography
and computed tomography) findings are described and attention is drawn to the diagnostic difficulties in this rare disease.
Received: 26 October 1998; Revised: 5 February 1999; Accepted: 7 May 1999 相似文献
15.
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.
Received: 16 October 1998; Revision received: 21 April 1999; Accepted: 28 May 1999 相似文献
16.
Capillary telangiectasia is a vascular abnormality primarily of the brainstem. The clinical relevance is unclear as is the
association with clearly pathologic findings such as cavernous haemangioma. We report on four cases with capillary telangiectasia
proven by follow-up und describe the imaging characteristics. T2 abnormality was only observed in half of the patients as
was the presence of a discernable collecting vein. Whereas two cases were incidental findings in neurologically normal persons
and one had symptoms clearly attributable to lacunar stroke, one patient may have had symptoms due to the vascular abnormality
in the pons.
Received: 26 January 1999; Revised: 24 August 1999; Accepted: 23 September 1999 相似文献
17.
Three-dimensional reconstructed rotational digital subtraction angiography in planning treatment of intracranial aneurysms 总被引:21,自引:0,他引:21
We evaluated three-dimensional (3D) reconstructions of 200 ° rotational digital subtraction angiography (DSA) images for
their contributions to improving the safety of endovascular embolization of intracranial aneurysms. Standard DSA and 200 °
rotational DSA were performed in 40 adult patients (aged 21–77 years) with 45 intracranial aneurysms. Information obtainable
from standard DSA and 3D-DSA images about aneurysm shape and size was compared. In 40 (89 %) of the 45 aneurysms 3D-DSA gave
additional information about the anatomy of the aneurysm. In 17 (43 %) of these cases aneurysm anatomy could be visualized
better on 3D-DSA than on standard DSA images. In three cases only 3D-DSA images showed blood vessels originating from the
aneurysm. Reconstructed 3D images were also helpful in visualizing partially clipped aneurysms. On maximum-intensity projection
images it was even possible to depict previously embolized aneurysms. Blood vessels originating from the aneurysm are visible
on 3D-DSA images, and even previously clipped aneurysms can be visualized well. Rotational DSA with 3D reconstruction is a
helpful tool in the assessment of intracranial aneurysms.
Received: 7 September 1999; Revised: 26 November 1999; Accepted: 26 November 1999 相似文献
18.
MR Imaging features of pelvic mucinous carcinomas 总被引:2,自引:0,他引:2
Mucinous carcinomas in the pelvis differ from non-mucinous tumors because of the differences in clinical outcome and imaging
appearance. Mucinous rectal carcinomas, for example, are known to be higher in stage at the time of the diagnosis because
they are more likely to be infiltrative and show a greater tendency for recurrence. These factors may lead to a poorer prognosis
in patients with the mucinous as compared with non-mucinous carcinomas. Mucinous carcinomas of all types typically show high
signal intensity on T2-weighted MR images, and therefore mimic other conditions such as necrotic tumors, fluid collections,
cysts, or liver hemangiomas. To familiarize readers with the MRI appearance, and to avoid pitfalls, this paper illustrates
the MRI features of the mucinous adenocarcinomas in various pelvic organs.
Received: 8 February 1999; Revised: 7 October 1999; Accepted: 10 January 2000 相似文献
19.
We describe the technical benefits of the dual-access technique for venous stenting in high-grade stenosis. Stents were implanted
successfully with this technique in all patients, although the preceding transfemoral interventions had failed. The dual-access
technique is useful to facilitate the intervention when the stenoses are too severe to place the stent through just a single
access point.
Received: 21 October 1998; Revised: 23 February 1999; Accepted: 3 May 1999 相似文献
20.
Mediastinal myelolipoma: CT and MRI appearances 总被引:1,自引:0,他引:1
Kawanami S Watanabe H Aoki T Nakata H Hayashi T Kido M Tsukada J Eto S 《European radiology》2000,10(4):691-693
A 72-year-old man presented with a mediastinal mass on chest radiograph. Computed tomography and MR imaging showed that the
mass consisted of both fatty and small nodular soft tissue components, highly suggestive of an extramedullary hematopoiesis
or a myelolipoma. A CT-guided needle biopsy was next performed and confirmed the diagnosis. We discuss the CT and MR imaging
appearances of this tumor and usefulness of a CT-guided needle biopsy to avoid surgery in asymptomatic patients.
Received: 8 March 1999; Revised: 23 June 1999; Accepted: 25 June 1999 相似文献