Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 5 de 5
Filter
1.
AJR Am J Roentgenol ; 192(6 Suppl): S98-107 (Quiz S108-11), 2009 Jun.
Article in English | MEDLINE | ID: mdl-19458104

ABSTRACT

OBJECTIVE: This article will review the workup of infertility in a male. The imaging of common conditions associated with infertility, including varicocele, ejaculatory duct obstruction, seminal vesicle agenesis, and undescended testis, will be shown, as well as other conditions that can be incidentally seen. CONCLUSION: The analysis of infertility in males has become more common in recent years. The practicing radiologist should be familiar with the evaluation of the infertile man and the common radiologic findings and disease processes associated with infertility.


Subject(s)
Infertility, Male/diagnosis , Contrast Media , Humans , Infertility, Male/diagnostic imaging , Magnetic Resonance Imaging/methods , Male , Ultrasonography/methods
3.
Can Assoc Radiol J ; 59(2): 70-6, 2008 Apr.
Article in English | MEDLINE | ID: mdl-18533395

ABSTRACT

OBJECTIVE: To evaluate the prevalence of occult malignancy with screening breast ultrasound. METHODS: All ultrasound-guided core needle breast biopsies performed between January 1, 1999, and June 30, 2001, were retrospectively reviewed. Lesions were identified during screening breast ultrasound in high-risk women with no mammographic or palpable abnormality in either breast, a unilateral mammographic or palpable abnormality in the contralateral breast, or a unilateral mammographic or palpable abnormality in a different quadrant of the same breast. All ultrasound-detected lesions were histologically verified. RESULTS: Six hundred and fifty-two women with a mean age of 49 years underwent 698 biopsies during the study period. Three hundred and forty-nine of these lesions were detected at screening breast ultrasound. Out of 349, 11 (3.2%) had a mammographically and clinically occult malignancy. Nine cancers were found in women with no mammographic or palpable abnormality. Two cancers were found in the same breast as the mammographic or palpable abnormality. None were found in the breast contralateral to a palpable or mammographic abnormality. CONCLUSION: Screening breast ultrasound of high-risk women has a similar detection rate for occult carcinoma as screening mammography, but has a low positive predictive value in cases where biopsy is performed.


Subject(s)
Adenocarcinoma/diagnosis , Breast Neoplasms/diagnosis , Carcinoma, Ductal, Breast/diagnosis , Carcinoma, Lobular/diagnosis , Ultrasonography, Mammary/methods , Adenocarcinoma/epidemiology , Adenocarcinoma/pathology , Adolescent , Adult , Aged , Aged, 80 and over , Biopsy, Needle , Breast/pathology , Breast Neoplasms/epidemiology , Breast Neoplasms/pathology , Carcinoma, Ductal, Breast/epidemiology , Carcinoma, Ductal, Breast/pathology , Carcinoma, Lobular/epidemiology , Carcinoma, Lobular/pathology , Female , Humans , Incidental Findings , Mass Screening/methods , Middle Aged , Predictive Value of Tests , Prevalence , Reproducibility of Results , Retrospective Studies
4.
Radiographics ; 26(5): 1469-84, 2006.
Article in English | MEDLINE | ID: mdl-16973776

ABSTRACT

Magnetic resonance (MR) imaging, when used in conjunction with mammography and ultrasonography, can be a powerful tool for breast imaging. There are various clinical scenarios in which MR imaging may provide key information that leads to an alteration in treatment plans (eg, by demonstrating features that were occult at physical examination or conventional imaging). Although many benign and malignant entities enhance at contrast material-enhanced breast MR imaging, the morphologic characteristics and kinetic profiles of lesions help narrow the differential diagnosis. To optimize the quality of the morphologic and kinetic information yielded by breast MR imaging, the radiologist must attend to various practical and technical prerequisites: A bilateral breast coil should be used with prone positioning of the patient. An MR imaging system with a high-field-strength magnet is needed, and the magnetic field must be homogeneous across the field of view, which should include both breasts. A T2-weighted sequence should be applied first to identify any cysts and should be followed by three-dimensional imaging with a T1-weighted spoiled gradient-echo sequence after the intravenous administration of a gadolinium chelate. To minimize artifacts, a direction other than the anterior-posterior direction should be selected for phase encoding. To suppress the signal from fat, a frequency-selective pulse should be applied during imaging, or the unenhanced MR imaging data should be subtracted from the contrast-enhanced MR imaging data during postprocessing. The imaging section thickness should be 3 mm or less, the pixel size should be less than 1 mm in each in-plane direction, and the total acquisition time should be less than 2 minutes.


Subject(s)
Breast Neoplasms/diagnosis , Breast/pathology , Image Enhancement/methods , Image Interpretation, Computer-Assisted/methods , Magnetic Resonance Imaging/methods , Breast Neoplasms/pathology , Female , Humans , Image Enhancement/instrumentation , Magnetic Resonance Imaging/instrumentation , Practice Guidelines as Topic , Practice Patterns, Physicians'
5.
Pediatr Radiol ; 32(5): 360-1, 2002 May.
Article in English | MEDLINE | ID: mdl-11956725

ABSTRACT

We present a 10-week-old infant who presented with cholestasis. Biliary obstruction secondary to massive pancreatic infiltration was demonstrated by ultrasound. A diagnosis of acute lymphoid leukemia was confirmed. Enlargement of the pancreas is unusual both in this age group and in leukemia. Infantile leukemia, although rare and usually not associated with gastrointestinal presentations, should be considered as a cause of pancreatic enlargement and neonatal cholestasis.


Subject(s)
Cholestasis, Intrahepatic/diagnosis , Cholestasis, Intrahepatic/etiology , Leukemia, Lymphoid/complications , Leukemia, Lymphoid/diagnosis , Leukemic Infiltration/complications , Leukemic Infiltration/diagnosis , Pancreas/pathology , Diagnosis, Differential , Female , Humans , Infant , Infant Welfare , Pancreas/diagnostic imaging , Ultrasonography
SELECTION OF CITATIONS
SEARCH DETAIL
...