176 research outputs found
Computed Tomography in Pulmonary Tuberculosis
CT scans in patients with primary tuberculosis commonly show findings
of Iympho-hematogeneous spread of the disease, while those of reactivation tuberculosis
commonly show findings of bronchogenic spread. Typical CT findings of primary
tuberculosis are airspace consolidation of the middle and lower lobes with mediastinal
and hilar lymphadenopathy showing central lower attenuation and peripheral rim en-
. hancement. Typical CT findings of reactivation tuberculosis are nodular and linear pulmonary
lesions at the apex without lymphadenopathy. High-resolution CT is extremely
helpful in understanding the patho-morphologic changes, mode of spread of the disease,
sequential morphologic change after antituberculous chemotherapy, and possibly
in diagnosing activity of the disease. Centrilobular small nodule or branching linear
lesions are the most common findings of fresh active pulmonary tuberculosis, which
represent intra- and peri-bronchiolar caseation necrosis. CT is also useful in the evaluation
of longstanding destructive pulmonary lesions and tracheobronchial tuberculosis.
The importance of the role of CT scan in patients with pulmonary tuberculosis is increasing
Chronic Pelvic Paragonimiasis: Radiological Findings
Two cases of ectopic paragonimiasis involving pelvic peritoneal cavity
and omentum were confirmed surgically and pathologically, The lesions were
manifested as nodules of faintly calcified periphery on various imaging modalities.
Ectopic paragonimiasis should be included in the differential diagnosis of nodular
calcifications in the pelvic cavity
Pulmonary tuberculosis in infants: radiographic and CT findings
OBJECTIVE: As complications of tuberculosis are frequent in infancy, correct diagnosis of tuberculosis in infants is important. The purposes of this study are to summarize radiographic and CT findings of pulmonary tuberculosis in infants and to determine the radiologic features frequently seen in infants with this disease. CONCLUSION: Frequent radiologic findings of pulmonary tuberculosis in infants are mediastinal or hilar lymphadenopathy with central necrosis and air-space consolidations, especially masslike consolidations with low-attenuation areas or cavities within the consolidation. Disseminated pulmonary nodules and airway complications are also frequently detected in this age group. CT is a useful diagnostic technique in infants with tuberculosis because it can show parenchymal lesions and tuberculous lymphadenopathy better than chest radiography. CT scans can also be helpful when chest radiographs are inconclusive or complications of tuberculosis are suspected
Radiological Spectrum of Hepatic Mesenchymal Hamartoma in Children
OBJECTIVE: A hepatic mesenchymal hamartoma is an uncommon benign tumor in children and little is known about the spectrum of its radiological features. The purpose of this study is to describe the spectrum of radiological features of a hepatic mesenchymal hamartoma in children. MATERIALS AND METHODS: Thirteen children with a pathologically confirmed hepatic mesenchymal hamartoma (M:F = 7:6; mean age, 3 years 2 months) were included in our study. Ultrasonography (US) was performed in nine patients including color and power Doppler US (n = 7). CT scans were performed in all patients. We evaluated the imaging findings of the hepatic mesenchymal hamartomas and the corresponding pathological features. RESULTS: Each patient had a single tumor (mean diameter: 13 cm [1.8-20 cm]). On CT and/or US, four patients (31%) had a "multiseptated cystic tumor", five patients (38%) had a "mixed solid and cystic tumor", and four patients (31%) had a "solid tumor." The septa of the cystic portion were thin in the multiseptated cystic tumors and irregularly thick in the mixed solid and cystic tumors as seen on US. On a post-contrast CT scan, solid portions or thick septa of the tumors showed heterogeneous enhancement. The amount of hepatocytes was significantly different among the three tumor groups according to the imaging spectrum (p = 0.042). CONCLUSION: A hepatic mesenchymal hamartoma in children can show a wide spectrum of radiological features, from a multiseptated cystic tumor to a mixed solid and cystic tumor, and even a solid tumor
Unusual Thymic Hyperplasia Mimicking Lipomatous Tumor in an Eight-Year-Old Boy with Concomitant Pericardial Lipomatosis and Right Facial Hemihypertrophy
We report a case of thymic hyperplasia accompanied by pericardial lipomatosis and right facial hemihypertrophy in an 8-year-old boy. On imaging studies, the hyperplastic thymus had prominent curvilinear and nodular fatty areas simulating a fat-containing anterior mediastinal mass, which is an unusual finding in children. To our knowledge, this is the first report on a child with a combination of thymic hyperplasia, pericardial lipomatosis, and right facial hemihypertrophy. The radiologic findings are presented with a brief discussion
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