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Patient: 54 year old male |
History: 54 year old man with right sided chest pain. The patient has a history of multiple sclerosis and has had a recent knee operation and also a colectomy. |
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Findings: Xenon 133 lung ventilation images: There is absent ventilation in a large nonsegment region predominantly in the expected position of a portion of the right upper and middle lobes. Additionally, there is a central photopenic defect medially in the right lung, larger than the expected photopenia attributable to normal hilar structures. No abnormality of left lung ventilation is seen. Tc-99m lung perfusion images: There is a matching pattern of absent perfusion involving the same nonsegmental region predominantly in the expected position of a portion of the right upper and middle lobes. There is a matching perfusion defect centrally in the visualized right lung as well. No abnormalities of the left lung is demonstrated. Frontal radiograph: There is a large right pneumothorax with collapse of the right lung medially. Frontal radiograph following chest tube placement: Complete resolution of the right pneumothorax with reexpansion of the right lung. |
DDx: Matched unilateral nonsegmental, nonlobar ventilation/perfusion defects: 1. Space occupying lesions: Pleural effusion, hemothorax, pneumothorax, empyema, pleural neoplasm, plumbage. |
Diagnosis: Pneumothorax |
Comments: No comments posted. |
Additional Details:
Case Number: 94740Owner(s): Brandon Peters and Jerold Wallis, Assoc Prof of RadiologyLast Updated: 02-07-2013 The reader is fully responsible for confirming the accuracy of this content. |