نتایج جستجو برای: nodules
تعداد نتایج: 21060 فیلتر نتایج به سال:
Due to the recent progress in radiology and increased clinical and pathological interest, small hepatocellular nodules about 1 cm in size are frequently being detected in patients with chronic liver disease, particularly liver cirrhosis. Two new types of small hepatocellular nodules are now known: low-grade hepatocellular carcinomas (HCC) and dysplastic nodules, in addition to the previously kn...
introduction: in spite of large number of studies regarding relation between thyroid cancer and childhood irradiation, contraversy still exists management of these patients. this study tries to find optimal method of thyroid evaluation in this group. methods and patients: in a recall program using mass media in khorasan, all patients with childhood irradiation were invited for thyroid evaluatio...
because of superficial location and not being covered by boney structure, thyroid is the ideal organ for 2-dimensional gray scale ultrasonography. availability of relatively low cost equipment and ever increasing number of endocrinologists with expertise in thyroid ultrasound has made it an integral part of thyroid practice in the office of endocrinologists. in particular, the current recommend...
OBJECTIVE The purpose of this study was to investigate the accuracy and reproducibility of results acquired with computer-aided volumetry software during MDCT of pulmonary nodules exhibiting ground-glass opacity. MATERIALS AND METHODS To evaluate the accuracy of computer-aided volumetry software, we performed thin-section helical CT of a chest phantom that included simulated 3-, 5-, 8-, 10-, ...
Kinetics of Phenotypic Maturation of Remodeling of Hyperplastic Nodules during Liver Carcinogenesis1
Hyperplastic nodules appearing during the preneoplastic phase of liver carcinogenesis were divided into two types, persistent and remodeling, according to the pattern of staining for y-glutamyltransferase. In the resistant cell model of liver carcinogenesis used in this study, hyperplastic nodules, uni formly staining for y-glutamyltransferase, rapidly emerge by 4 weeks after a single injection...
OBJECTIVES The objective of this study was to compare the sensitivity of detection of lung nodules on low-dose screening CT images between radiologists and technologists. METHODS 11 radiologists and 10 technologists read the low-dose screening CT images of 78 subjects. On images with a slice thickness of 5 mm, there were 60 lung nodules that were ≥5 mm in diameter: 26 nodules with pure ground...
A 43-year-old middle-eastern woman was visited with a 15-year history of multiple painful cutaneous nodules on her back. The first lesion appeared on her back when she was 28 years old. As she aged, the lesions became larger, more numerous, and more painful with cold or physical contact. Her medical history was not significant. The patient’s medications included naproxen, calcium-D, and vitamin...
We compared the thin-section CT findings of 11 intrapulmonary lymph nodes with pathological findings and evaluated the possibility of CT scan differential diagnosis from pulmonary metastatic nodules. First, we retrospectively reviewed CT scan and pathological findings of intrapulmonary lymph nodes. The median size of these nodules was 6.2 mm. The nodules appeared round (n=3) or angular (n=8) in...
This paper describes a computer-aided diagnosis (CAD) method to classify pneumoconiosis on HRCT images. In Japan, the pneumoconiosis is divided into 4 types according to the density of nodules: Type 1 (no nodules), Type 2 (few small nodules), Type 3-a (numerous small nodules) and Type 3-b (numerous small nodules and presence of large nodules). Because most pneumoconiotic nodules are small-sized...
PURPOSE To evaluate malignancy risk according to ultrasound (US) features and size change on follow-up US in mixed echoic thyroid nodules and to suggest management guidelines thereof. MATERIALS AND METHODS Among patients who underwent US-guided fine needle aspiration biopsy, 316 mixed echoic nodules in 303 patients were included after excluding the patients with pure solid or cystic nodules o...
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