Useful computed tomography features for differentiating between focal atelectasis and pleural dissemination on preoperative evaluations of thymic epithelial tumors.
Eur J Radiol
; 103: 38-43, 2018 Jun.
Article
em En
| MEDLINE
| ID: mdl-29803383
ABSTRACT
PURPOSE:
Distinguishing between focal atelectasis (FA) and pleural dissemination (PD) is important for determining the optimal therapeutic strategy for thymic epithelial tumors (TET). This study aimed to identify useful computed tomography (CT) features for distinguishing between these two conditions. MATERIALS ANDMETHODS:
We retrospectively analyzed preoperative CT images of 27 TET, which included 40 PD and 40 FA lesions. Two radiologists independently interpreted the pleural lesions without knowing the final diagnosis. The CT images were evaluated to assess the lesion location, size, and shape, presence of a spinous shadow and ground glass opacities (GGO) near to the lesion, and the shortest distance from the lesion to the nearest peripheral pulmonary artery (PA).RESULTS:
FA lesions tended to occur on the dorsal side (90%, Pâ¯=â¯0.024); have shorter major and minor axes (Pâ¯<â¯0.001), a triangular shape (43%, Pâ¯=â¯0.002), a spinous shadow (45%, Pâ¯=â¯0.001) and GGO (28%, Pâ¯=â¯0.006); and be close to a peripheral PA (Pâ¯=â¯0.007). Ninety percent of PD lesions were located in the left thorax, and all of them were ipsilateral to the tumor (both Pâ¯<â¯0.001). The 9 examined factors exhibited sensitivity, specificity, positive predictive, and negative predictive values of 85%, 95%, 94%, and 86%, respectively, for diagnosing FA (when ≥3 factors were present), and 90%, 48%, 63%, and 83%, respectively, for diagnosing PD (when ≥4 factors were present).CONCLUSION:
The site, size, and shape of a lesion; the presence of a spinous shadow/GGO; and the distance to the nearest PA are useful for distinguishing between PD and FA.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Pleurais
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Atelectasia Pulmonar
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Neoplasias do Timo
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Cuidados Pré-Operatórios
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Tomografia Computadorizada por Raios X
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Neoplasias Epiteliais e Glandulares
Tipo de estudo:
Diagnostic_studies
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Observational_studies
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Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Eur J Radiol
Ano de publicação:
2018
Tipo de documento:
Article