1. Can preoperative computed tomography of the chest predict completeness of the major pulmonary fissure at surgery?
- Author
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Schieman, Colin, MacGregor, John H., Kelly, Elizabeth, Graham, Andrew, McFadden, Sean P., Gelfand, Gary, and Grondin, Sean C.
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Thoracotomy -- Health aspects ,Lung cancer -- Risk factors -- Diagnosis -- Research ,CT imaging -- Usage ,Health ,Health care industry - Abstract
Background: An incomplete major pulmonary fissure can make anatomic lung resection technically more difficult and may increase the risk of complications, such as prolonged postoperative air leak. The objective of this study was to determine if preoperative computed tomography (CT) of the chest could accurately predict the completeness of the major pulmonary fissure observed at the time of surgery. Methods: From October 2008 to June 2009, patients at a single university institution were enrolled if they underwent surgery for a pulmonary nodule, mass or known cancer. At the time of surgery, completeness of the major pulmonary fissure was graded 1 if pulmonary lobes were entirely separate, 2 if the visceral cleft was complete with an exposed pulmonary artery at the base with some parenchyma fusion, 3 if the visceral cleft was only evident for part of the fissure without a visible pulmonary artery and 4 if the fissure was absent. The preoperative CT scan of each patient was graded by a single, blinded chest radiologist using the same scale. We used the Pearson [chi square] test with 2-tailed significance to test the independence of the operative and radiologic grading. Results: In 48% (29 of 61) of patients, the radiologic and operative grading were the same. Of those graded differently, 94% (30 of 32) were within 1 grade. Despite this agreement, we observed no statistically significant correlation between the operative and radiologic grading (p = 0.24). Conclusion: The major fissure can often be well-visualized on a preoperative CT scan, but preoperative CT cannot accurately predict the completeness of the major pulmonary fissure discovered at surgery. Contexte : Une scissure pulmonaire majeure incomplete peut rendre la resection pulmonaire anatomique plus difficile sur le plan technique et accroitre le risque de complications, notamment la fuite d'air prolongee apres l'intervention. Cette etude visait a determiner si une tomodensitometrie (TDM) pulmonaire preoperatoire pourrait predire avec precision le caractere complet de la scissure pulmonaire observee au moment de l'intervention chirurgicale. Methodes : D'octobre 2008 a juin 2009, les patients d'un meme etablissement universitaire ont ete inscrits a l'etude s'ils subissaient une intervention chirurgicale pour un nodule, une masse ou un cancer connu au poumon. Au moment de l'intervention, le caractere complet de la scissure pulmonaire a ete cote 1 si les lobes pulmonaires etaient entierement separes, 2 si le sillon branchial etait complet et conjugue a une exposition de l'artere pulmonaire a la base et a une fusion du parenchyme, 3 si le sillon branchial etait evident dans une partie seulement de la scissure sans que l'artere pulmonaire soit visible, et 4 s'il n'y avait pas de scissure. Le resultat de la TDM preoperatoire de chaque patient a ete cote par 1 seul radiologiste travaillant a l'insu et utilisant la meme echelle. Nous avons utilise le test [chi square] de Pearson avec signification bilaterale pour verifier l'independance de l'evaluation operatoire et radiologique. Resultats : Chez 48 % des patients (29 sur 61), les evaluations radiologique et operatoire ont ete identiques. Parmi ceux qui ont fait l'objet d'une evaluation differente, l'ecart de cote ne depassait pas 1 chez 94 % (30 sur 32). En depit de cette convergence, nous n'avons observe aucun lien statistiquement significatif entre l'evaluation operatoire et radiologique (p = 0,24). Conclusion : Une TDM preoperatoire permet souvent de bien visualiser la scissure majeure, mais elle ne peut predire avec exactitude le caractere complet de la scissure pulmonaire majeure au moment de l'intervention chirurgicale., Anatomic lung resections are the most commonly performed thoracic surgical procedure. These resections are typically performed as the primary, curative treatment for non-small cell lung cancer. The technical difficulty of [...]
- Published
- 2011
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