Abstract:
PURPOSE:To evaluate the accuracy of preoperative computed tomography (CT) in predicting the location and type of ductal involvement and malignant transformation in intraductal papillary mucinous (IPM) pancreatic tumors and to determine the predictive factors for malignancy at CT. MATERIALS AND METHODS:The helical CT scans obtained in 36 operated on patients with a diagnosis of IPM pancreatic tumor were retrospectively assessed. CT-histopathologic correlation was then performed. RESULTS:The final diagnoses of IPM tumor were combined type (n = 26) and branch duct type (n = 10) lesions. Histologic analysis revealed adenocarcinoma (n = 9), hyperplasia (n = 8), low-grade dysplasia (n = 12), and high-grade dysplasia (n = 7). The lesions were located mainly in the head or uncinate process (n = 20) or were diffuse or multifocal (n = 12). In 12 patients (13 cases), CT-histopathologic correlation was poor, including that in the evaluation of ductal involvement (n = 7), evaluation of lesion location (n = 2), and diagnosis of malignant transformation (n = 4). The most specific predictive signs of malignancy were presence of diabetes and, at CT, a solid mass, main pancreatic duct dilatation greater than 10 mm, diffuse or multifocal involvement, and attenuating or calcified intraluminal content. CONCLUSION:The main causes of poor CT-histopathologic correlation were related to evaluation of main pancreatic duct involvement and diagnosis of malignant transformation. The association between diabetes and specific CT criteria was highly suggestive of malignancy.
journal_name
Radiologyjournal_title
Radiologyauthors
Taouli B,Vilgrain V,Vullierme MP,Terris B,Denys A,Sauvanet A,Hammel P,Menu Ydoi
10.1148/radiology.217.3.r00dc24757subject
Has Abstractpub_date
2000-12-01 00:00:00pages
757-64issue
3eissn
0033-8419issn
1527-1315journal_volume
217pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::The results of treatment for recurrent cancer at the tracheal stoma have been poor. From 1971 to 1976, elective postoperative irradiation of the neck was given to 26 high-risk patients with carcinoma of the larynx and hypopharynx. None of the 22 patients whose stomas were irradiated developed stomal or peristomal recu...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/124.3.809
更新日期:1977-09-01 00:00:00
abstract::Purpose To reduce radiotracer requirements for amyloid PET/MRI without sacrificing diagnostic quality by using deep learning methods. Materials and Methods Forty data sets from 39 patients (mean age ± standard deviation [SD], 67 years ± 8), including 16 male patients and 23 female patients (mean age, 66 years ± 6 and ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2018180940
更新日期:2019-03-01 00:00:00
abstract:PURPOSE:To use magnetic resonance (MR) imaging to document the appearance of perianal infection in patients with a hematologic malignancy (HM) compared with that in immunocompetent control patients. MATERIALS AND METHODS:After an ethical waiver was obtained, 38 patients with an HM were matched by age and sex to 38 con...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.15141662
更新日期:2015-07-01 00:00:00
abstract:PURPOSE:To compare the value of enhancement and pharmacokinetic parameters measured at dynamic gadoxetate-enhanced magnetic resonance (MR) imaging in determining hepatic organic anion transporter expression in control rats and rats with advanced liver fibrosis. MATERIALS AND METHODS:Institutional animal review board a...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.14140313
更新日期:2015-02-01 00:00:00
abstract::Recent methods of magnetic resonance imaging involve the placement of a grid of planes of saturation over the imaging plane; distortion of the grid corresponds to tissue displacement in two dimensions. An extension to this method that allows measurement of motion in the third dimension involves a second acquisition th...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.181.2.1924810
更新日期:1991-11-01 00:00:00
abstract::History In 2004, this woman received a diagnosis of invasive mammillary carcinoma, tubular variant, strongly positive for estrogen and progesterone receptors. Her lesion was found at screening mammography performed at an outside institution when she was 59 years old. She underwent partial mastectomy, with partial axil...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2017150456
更新日期:2017-06-01 00:00:00
abstract::Background Comprehensive assessments of the frequency and associated doses from radiologic and nuclear medicine procedures are rarely conducted. The use of these procedures and the population-based radiation dose increased remarkably from 1980 to 2006. Purpose To determine the change in per capita radiation exposure i...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2020192256
更新日期:2020-05-01 00:00:00
abstract::There is an increasing opportunity to perform multifunctional imaging at a variety of organ sites with relatively short examination times. Each technique yields quantitative parameters that reflect specific aspects of the underlying tumor or tissue biology. Many biomarkers have emerged that provide unique information ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.10091760
更新日期:2010-08-01 00:00:00
abstract:PURPOSE:To determine if vertebral bone densities or vertebral body sizes contribute to gender differences in vertebral bone mass in adults. MATERIALS AND METHODS:Cancellous and cortical bone densities and dimensions of three lumbar vertebrae in 25 women and 18 men were measured with quantitative computed tomography (C...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.190.3.8115610
更新日期:1994-03-01 00:00:00
abstract:PURPOSE:To prospectively compare nonenhanced magnetic resonance (MR) imaging and ultrasonography (US) for the diagnosis of pediatric appendicitis. MATERIALS AND METHODS:This HIPAA-compliant study was approved by the institutional review board, and written informed consent was obtained from the patient's parent or guar...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.14132206
更新日期:2014-07-01 00:00:00
abstract:PURPOSE:To determine the value of ultrasound (US) in the diagnosis of snapping iliopsoas tendon. MATERIALS AND METHODS:In three patients, dynamic US of the hip was performed as the flexed, abducted, and externally rotated hip was extended. The contralateral hip was also evaluated. Hip arthrography was performed in all...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.198.2.8596860
更新日期:1996-02-01 00:00:00
abstract::Esophageal atresia may be associated with a long interval or gap between the upper and lower pouches. Despite a variety of procedures to elongate the esophagus, surgeons have been unable to achieve esophageal continuity in many patients. Three infants with esophageal atresia and long gaps recently underwent hydrostati...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.171.3.2717760
更新日期:1989-06-01 00:00:00
abstract::Multisection, dual-echo magnetic resonance (MR) transaxial images of blood vessels contain both anatomic and qualitative information about flow. Even so, the images are produced as a series of two-dimensional tomographic sections from which full visualization of connected structures is difficult. A computer algorithm ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.157.3.4059560
更新日期:1985-12-01 00:00:00
abstract::Percutaneous transperitoneal fine-needle lymph-node biopsy was performed in 52 patients to establish a diagnosis of metastatic disease in nodal defects detected during lymphography. The procedure was found to be highly accurate, with few false-negatives and no false-positives. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/131.3.647
更新日期:1979-06-01 00:00:00
abstract::The Radiation Oncology Center in Sacramento, California, has developed a procedure for establishing an intraoperative radiation therapy facility in a community practice. The logistics pertaining to personnel, equipment, physical measurements, and quality assurance are presented. Particular emphasis is given to the mos...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.168.1.3380970
更新日期:1988-07-01 00:00:00
abstract::Purpose To identify risk factors for hippocampal calcifications and to investigate the association between hippocampal calcifications and cognitive function. Materials and Methods For this retrospective study, consecutive patients visiting a memory clinic at a Dutch general hospital between April 2009 and April 2015 w...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2018172588
更新日期:2018-09-01 00:00:00
abstract::Purpose To assess whether contrast material-enhanced ultrasonography (US) can be used to differentiate responders from nonresponders among patients with clinically active Crohn disease after 6 weeks of pharmacologic treatment. Materials and Methods This prospective study was approved by our ethics committee, and writt...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016152461
更新日期:2016-11-01 00:00:00
abstract::Seven patients with proved small-bowel infarction were studied to determine whether the radiographic appearance of an ischemic segment is helpful in predicting the severity of the process, in particular the potential viability or nonviability of the affected bowel. It was found that the barium examination is useful in...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/123.2.303
更新日期:1977-05-01 00:00:00
abstract:PURPOSE:To evaluate the accuracy and precision of a radiographic absorptiometry (RA) method for assessment of bone mineral of the middle phalanges. MATERIALS AND METHODS:Nineteen cadaveric hands were radiographed with an aluminum wedge, once at 50 kVp and 400 mA and once at 60 kVp and 300 mA. Bone mineral content (BMC...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.192.3.8058960
更新日期:1994-09-01 00:00:00
abstract:PURPOSE:To describe the placement of a nasolacrimal polyurethane stent with a new introducer set and hook. MATERIALS AND METHODS:The authors designed a soft polyurethane stent, an introducer that does not require balloon dilation, and a hook that can remove a ball-tipped guide wire from the inferior nasal meatus under...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.194.1.7997560
更新日期:1995-01-01 00:00:00
abstract:PURPOSE:To compare the association between neurodevelopmental outcome in neonates with hypoxic-ischemic encephalopathy following perinatal asphyxia and (a) apparent diffusion coefficients (ADCs) in the thalamus and basal ganglia at diffusion-weighted (DW) magnetic resonance (MR) imaging and (b) hydrogen 1 (¹H) MR spect...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.11110213
更新日期:2011-10-01 00:00:00
abstract::The efficacy of stereotaxic localization for fine-needle aspiration biopsy in the detection of recurrent cancer manifested as calcifications on mammograms was evaluated in 43 patients that had been treated with local resection and radiation therapy. Six patients had malignant aspirates and one had an atypical aspirate...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.182.1.1727270
更新日期:1992-01-01 00:00:00
abstract::Manganese (II) N,N'-dipyridoxylethylenediamine-N,N'-diacetate 5,5'-bis(phosphate) (DPDP) was tested as a contrast agent for magnetic resonance imaging of pancreatic adenocarcinoma in 15 patients. At enhanced T1-weighted spin-echo (SE) and enhanced T1-weighted gradient-echo (GRE) imaging, statistically significant incr...
journal_title:Radiology
pub_type: 临床试验,杂志文章
doi:10.1148/radiology.186.3.8430190
更新日期:1993-03-01 00:00:00
abstract::An unusual case of pneumatosis coli is presented. The patient had acute inflammatory disease with gangrene of the appendix associated with air within the wall of the contiguous right colon. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/120.1.90
更新日期:1976-07-01 00:00:00
abstract:PURPOSE:To prospectively evaluate the learning curves and reading times of inexperienced readers who used the virtual dissection reading method for retrospective computed tomographic (CT) colonography data sets, with and without concurrent computer-aided detection (CAD). MATERIALS AND METHODS:An Institutional Review B...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2482070895
更新日期:2008-09-01 00:00:00
abstract:PURPOSE:To investigate the association of 7-T magnetic resonance (MR) imaging characteristics with metastatic nodal invasion, determined with histopathologic assessment in dissected sentinel lymph nodes of breast cancer patients. MATERIALS AND METHODS:Institutional review board approval and informed consent were obtai...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.11103535
更新日期:2011-10-01 00:00:00
abstract::Positive-mode xeroradiography is an excellent method of visualizing soft-tissue structures in mammography and other procedures; however, toner deletions over a large area may preclude adequate delineation of the soft tissues near high-density structures such as bone. Use of the negative mode in the development cycle p...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/124.3.689
更新日期:1977-09-01 00:00:00
abstract:PURPOSE:To assess the effect of using a lossy Joint Photographic Experts Group standard for wavelet image compression, JPEG2000, on pulmonary nodule detection at low-dose computed tomography (CT). MATERIALS AND METHODS:One hundred sets of lung CT data ("cases") were compressed to 30:1, 20:1, and 10:1 levels by using a...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2281020254
更新日期:2003-07-01 00:00:00
abstract::Purpose To identify wall enhancement patterns on vessel wall MRI that discriminate between stable and unstable unruptured intracranial aneurysm (UIA). Materials and Methods Patients were included from November 2012 through January 2016. Vessel wall MR images were acquired at 3 T in patients with stable (incidental and...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2018172879
更新日期:2018-10-01 00:00:00
abstract::Background MRI with fluorine 19 (19F) probes has shown an ability to track immune cell activity with a specific, stable, and quantitative signal. In addition, the chemical shift differences of selected 19F probes make dual-probe imaging possible. To improve 19F MRI sensitivity for dual-probe imaging, optimal fluorine ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2019181073
更新日期:2019-05-01 00:00:00