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[Bladder tumors: false recurrences].
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The use of the new cytostatics for prophylactic therapy of superficial bladder tumor recurrence has been associated with fibrino-necrotic ulcers and eosinophilic cystitis. We underscore the problems in making the differential diagnosis which sometimes present with true tumor necrosis. We describe
False positive linear fluorescence in acute tubular necrosis.
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Current management of inguinal false aneurysms.
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False aneurysms are formed as a result of bleeding causing a hematoma to compress the surrounding tissue. The majority of false aneurysms presenting to the vascular surgeon are caused by iatrogenic injury to an artery. Although anastomotic failure occurs, a much higher number is caused by bleeding
False-positive breast screening due to fat necrosis following mammography.
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Traumatic fat necrosis can result in a spectrum of imaging appearances that range from characteristically benign to those indistinguishable from malignancy. In such cases, biopsy might be required for diagnosis. The present case demonstrates a suspicious mammographic mass lesion appearing following
Mediastinal false aneurysm after thoracic aortic surgery.
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BACKGROUND
Postoperative mediastinal false aneurysm is associated with a substantial morbidity and mortality. Surgical treatment is mandatory, although the individual approach varies according to the type of pathologic process, infection status, and site of origin of the aneurysm.
METHODS
Between
Approaches to reduce false positives and false negatives in the analysis of microarray data: applications in type 1 diabetes research.
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BACKGROUND
As studies of molecular biology system attempt to achieve a comprehensive understanding of a particular system, Type 1 errors may be a significant problem. However, few investigators are inclined to accept the increase in Type 2 errors (false positives) that may result when less stringent
[Carcinoma with false negative mammogram: when and how?].
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Breast carcinomas with false negative mammogram correspond to carcinomas diagnosed with means other than mammogram when the mammogram, at the time of diagnosis, showed no significant abnormality. The rate of false mammogram is difficult to ascertain because few studies have been published on this
False negative bone scan in a female runner.
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Stress fractures are more prevalent in today's fitness cognizant society. Stress fractures of the femoral neck are common and present with specific symptoms and findings. The diagnosis is based on clinical history, physical exam, radiography, bone scintigraphy, and computed tomography (C.T.) scans.
Factors associated with false-negative pathologic diagnosis of calciphylaxis.
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BACKGROUND
Calciphylaxis is a rare, painful, and debilitating disorder of vascular calcification and skin necrosis that typically affects patients with advanced kidney disease. During our routine pathology practice, we noted several missed diagnoses on calciphylaxis consultation cases originating
Aortic false aneurysms after prosthetic reconstruction of the infrarenal aorta.
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False aneurysm of the infrarenal aorta was found at the site of proximal anastomosis in 13 patients after vascular reconstruction for lower limb arterial disease. The grafts involved were aortoprosthetic in one patient, aortobiiliac in two patients, and aortobifemoral in 10 patients. They had been
False positive diagnosis in conventional and liquid-based cervical specimens.
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OBJECTIVE
To examine conventional and liquid-based cervical smears falsely diagnosed as malignant at our institution and to investigate, through cytologic-histologic correlation, factors influencing false positive diagnoses.
METHODS
Cervical cytologic diagnoses of malignancy from May 1, 1995, to
Brain stem glioma in a child: false diagnosis of radiation necrosis with FDG PET.
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False aneurysm of the ascending aorta following aortic valve replacement.
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False aneurysm of the ascending aorta is a rare and life-threatening complication of open heart surgery, usually occurring late after operation. Echocardiography, especially transesophageal echocardiography, is a non-invasive method of examination which can be very helpful in its diagnosis. Deep
Cardioversion and "false positive" technetium-99m stannous pyrophosphate myocardial scintigrams.
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The present studies performed in experimental animals demonstrate that electrical direct current cardioversion can produce skeletal muscle damage and increased technetium-99m stannous pyrophosphate (99mTc-PYP) uptake; in experimental animals the electrically damaged skeletal muscle shows necrosis
False-negative morphine-augmented hepatobiliary scintigraphy with a rim sign.
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A patient with cholelithiasis and clinically suspected of acute cholecystitis underwent hepatobiliary scintigraphy that demonstrated initial nonvisualization of the gallbladder in association with a subtle rim sign, but subsequent gallbladder visualization after administration of intravenous
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