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Journal Information
Vol. 30. Issue 9.
Pages 449-453 (November 1994)
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Vol. 30. Issue 9.
Pages 449-453 (November 1994)
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Atelectasias redondas nodulares: apariencia en tomografía computarizada y resonancia magnética
Rounded nodular atelectasis: CT and NMR features
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6138
J. Galant, L. Martí-Bonmatí1, M. Domingo, J. Vilar, D. Ferrer, J. Martínez-Rodrigo, E. Lonjedo
Departamento de Diagnóstico por Imagen, Hospital Doctor Peset. Valencia
A. Piquer*
* Servicio de Neumología. Hospital Doctor Peset. Valencia
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Article information

Las atelectasias redondas son formas no usuales de colapso pulmonar que por su apariencia radiológica pueden ser confundidas con patología tumoral, especialmente las formas nodulares. Hemos estudiado 14 casos de estas lesiones mediante tomografía axial computarizada (TAC). En tomografía computarizada, todas las lesiones estudiadas mostraron morfología redondeada, y localización subpleural, y la pleura visceral se encontró engrosada. El signo radiológico que más ayudó al diagnóstico fue el arqueamiento de los vasos próximos hacia la lesión, que estuvo presente en todos nuestros casos. Otros signos radiológicos como hiperlucencia del parénquima pulmonar circundante, pérdida de volumen del lóbulo afectado y broncograma aéreo se encontraron en 10, 7 y 7 pacientes, respectivamente. Cuando la apariencia radiológica es característica recomendamos no realizar ningún estudio diagnóstico adicional. Tres de estas lesiones fueron estudiadas además mediante resonancia magnética (RM) que en 2 casos mostró líneas curvas hipointensas características en todas las secuencias. La habilidad de la tomografía computarizada para el diagnóstico de esta entidad relega a la resonancia magnética a un segundo plano.

Palabras clave:
Atelectasia redonda
Diagnóstico atelectasias
Tomografía computarizada
Resonancia magnética

Rounded atelectasis is a rare form of lung collapse whose X-ray appearance can be confused with that of tumors, especially nodular forms. We studied 14 such lesions with computerized tomography, finding that all were rounded and subpleural, specifically in the thickened pleura visceralis. The radiological sign that was most useful for diagnosis was the are of the proximal vessels in the direction of the lesión. Such an are was present in all the cases we reviewed. Other radiological signs such as brightness of the surrounding parenchyma, loss of volume in the affected lobe and the presence of air bronchogram were found in 10, 7 and 7 patients, respectively. When the X-ray appearance clearly indicates a diagnosis of rounded nodular atelectasis, we recommend that no additional diagnostic procedure be made. Three lesions in our sample were studied by magnetic resonance, which revealed the characteristic hypointense curves in all sequences done on 2 patients. The usefulness of computerized tomography in the diagnosis of this entity relegates magnetic resonance to a second plane.

Key words:
Atelectasis rounded diagnosis
Computerized tomography
Magnetic resonance
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Copyright © 1994. Sociedad Española de Neumología y Cirugía Torácica
Archivos de Bronconeumología
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