RESUMEN
The ability of computed tomography of the lungs to detect pulmonary nodules was compared with that of conventional chest roentgenography and whole-lung tomography. Computed tomography detected more pulmonary nodules in 10 of 29 patients studied with both computed tomography and whole-lung tomography. Computed tomography of the lungs is the most accurate noninvasive method available for detecting pulmonary nodules.
Asunto(s)
Nódulo Pulmonar Solitario/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Adenocarcinoma/diagnóstico por imagen , Diagnóstico Diferencial , Humanos , Pulmón/diagnóstico por imagen , Neoplasias Pulmonares/diagnóstico por imagen , Tomografía por Rayos XRESUMEN
Extra-adrenal pheochromocytomas are more common in children (30%) than in adults (10%). Of the extra-adrenal sites, the intrathoracic site is the most rare. A 15-year-old boy had a pheochromocytoma successfully removed from the left paraspinal region of his chest. Four years before removal, he had radiation therapy of 3,500 rads to the tumor because of its apparent nonresectability. After therapy, there was transient clinical and biochemical improvement. Preoperative angiography and computed tomography helped define the anatomy of the tumor vessels and the relationship to the thoracic aorta of the tumor. These studies also aided in discounting any other site for the pheochromocytoma, either adrenal or extramedullary. A slow-growing pulmonary metastatic lesion was subsequently identified and successfully excised.
Asunto(s)
Feocromocitoma/cirugía , Neoplasias Torácicas/cirugía , Neoplasias de las Glándulas Suprarrenales/orina , Niño , Humanos , Neoplasias Pulmonares/secundario , Masculino , Metanefrina/orina , Feocromocitoma/complicaciones , Feocromocitoma/diagnóstico por imagen , Feocromocitoma/orina , Neoplasias Torácicas/complicaciones , Neoplasias Torácicas/diagnóstico por imagen , Neoplasias Torácicas/orina , Tomografía Computarizada por Rayos XRESUMEN
At present, linear plain-film tomography of the trachea is the method of choice for demonstrating the location of post-tracheostomy stenotic lesions and tracheal tumors. This technique does not further compromise the patient's respiratory status, as sometimes occurs with positive-contrast studies using iodine-containing materials, and the radiation dose to the patient from plain-film tomography is considerably less than that from xerotomography.
Asunto(s)
Tomografía por Rayos X/métodos , Neoplasias de la Tráquea/diagnóstico por imagen , Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/diagnóstico por imagen , Dosis de Radiación , Estenosis Traqueal/diagnóstico por imagen , Traqueotomía , XerorradiografíaAsunto(s)
Isquemia Encefálica/diagnóstico por imagen , Encéfalo/diagnóstico por imagen , Ahogamiento , Hipoxia Encefálica/diagnóstico por imagen , Isquemia Encefálica/etiología , Niño , Ahogamiento/diagnóstico por imagen , Humanos , Hipoxia Encefálica/etiología , Pronóstico , Tomografía Computarizada por Rayos XAsunto(s)
Neoplasias Pulmonares/diagnóstico por imagen , Tomografía por Rayos X/métodos , Fístula Arteriovenosa/diagnóstico por imagen , Neoplasias Óseas/diagnóstico por imagen , Calcinosis/diagnóstico por imagen , Quistes/diagnóstico por imagen , Diagnóstico Diferencial , Humanos , Pulmón/diagnóstico por imagen , Enfermedades Pulmonares/diagnóstico por imagen , Metástasis de la Neoplasia , Dosis de Radiación , Intensificación de Imagen RadiográficaRESUMEN
An osteoid osteoma nidus was removed under computed tomography (CT) scan guidance. This procedure may have advantages over en bloc resection for treatment of osteoid osteoma since it ensures the removal of the nidus without producing a large bony defect such as results from en bloc resection.
Asunto(s)
Neoplasias Femorales/diagnóstico por imagen , Osteoma Osteoide/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Adolescente , Neoplasias Femorales/cirugía , Humanos , Masculino , Osteoma Osteoide/cirugíaRESUMEN
In 11 of 23 patients, computed tomography of the chest detected pulmonary nodules that were not detected by conventional chest radiography or whole lung tomography. CT is recommended for patients suspected of having pulmonary metastasis and those with a solitary pulmonary nodule.
Asunto(s)
Neoplasias Pulmonares/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Carcinoma de Células Pequeñas/diagnóstico por imagen , Carcinoma de Células Escamosas/diagnóstico por imagen , Humanos , Metástasis Linfática , Masculino , Persona de Mediana Edad , Metástasis de la NeoplasiaRESUMEN
Findings from the first 430 CT examinations of the thorax performed at the Mayo Clinic were compared with results of film studies and the most certain later diagnoses in the same cases. Results were analyzed by disease and by mediastinal compartment. CT was superior in staging bronchogenic carcinoma, detecting abnormal masses, and in demonstrating mediastinal normally when plain films were equivocal. It generally gave clear delineations of lesions and distinguished them better from normal structures, and, in correlation with clinical data, it was more accurate in suggesting whether they were benign or malignant.
Asunto(s)
Neoplasias del Mediastino/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Adenocarcinoma/diagnóstico por imagen , Adulto , Anciano , Femenino , Humanos , Neoplasias Pulmonares/diagnóstico por imagen , Linfoma/diagnóstico por imagen , Masculino , Persona de Mediana Edad , Metástasis de la NeoplasiaRESUMEN
Detecting pulmonary metastasis is important when planning surgical therapy, radiotherapy, or chemotherapy in patients with known malignancy. A series of 91 patients was studied by both whole lung tomography and computed tomography (CT) of the lungs. More pulmonary nodules were detected with CT than with whole lung tomography in 32 (35%) of the patients. Of the 91 patients in the study, 31 had resection of some or all of the pulmonary nodules. In 27 patients, the nodules were primary or metastatic malignant lesions. Bilateral pulmonary nodules were detected with CT in 13 patients when whole lung tomography had demonstrated nodules in only one lung. CT has replaced whole lung tomography as the method preferred by the authors for detecting pulmonary nodules in selected patients at risk to develop pulmonary metastasis.
Asunto(s)
Neoplasias Pulmonares/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Tomografía por Rayos X , Adolescente , Anciano , Reacciones Falso Negativas , Reacciones Falso Positivas , Femenino , Humanos , Neoplasias Pulmonares/cirugía , Masculino , Métodos , Persona de Mediana Edad , Cirugía Torácica , Tórax/cirugíaRESUMEN
Patients with pseudolymphoma, well-differentiated lymphocytic lymphoma, and lymphocytic interstitial pneumonitis were studied. Diagnoses were confirmed by recently developed immunochemical staining techniques. Radiographic findings in pseudolymphoma were different from those in well-differentiated lymphocytic lymphoma, and clinical findings in lymphocytic interstitial pneumonitis were different from those in the other two types of lesions. The interstitial infiltrate of lymphocytic interstitial pneumonitis had two patterns: basilar with an alveolar component and diffuse with associated honeycombing. Pseudolymphoma and lymphocytic interstitial pneumonitis are being polyclonal inflammatory processes without malignant potential. Well-differentiated lymphocytic lymphoma, a monoclonal neoplasm, often has an indolent course.
Asunto(s)
Neoplasias Pulmonares/diagnóstico por imagen , Linfoma no Hodgkin/diagnóstico por imagen , Linfoma/diagnóstico por imagen , Fibrosis Pulmonar/diagnóstico por imagen , Humanos , Neoplasias Pulmonares/diagnóstico , Linfoma/diagnóstico , Linfoma no Hodgkin/diagnóstico , Fibrosis Pulmonar/diagnóstico , RadiografíaRESUMEN
At the community medical center, we have introduced and successfully applied digital subtraction angiography (DSA) to disease processes seen in 1,144 patients. Although there is a trade-off between increased contrast resolution and decreased spatial resolution with the DSA approach, nonetheless in many vascular beds it provides rapid, safe, and accurate disease diagnosis.