Question
A 60-year-old woman with rheumatoid arthritis presents with a flu-like illness and nonproductive cough. Her symptoms have not responded to an appropriate course of antibiotics. An HRCT is performed and demonstrates widespread mosaic perfusion. Which additional CT finding would suggest a diagnosis of obliterative bronchiolitis rather than diffuse pulmonary haemorrhage?
| A. |
Increased calibre pulmonary vessels in the hyperattenuated area |
| B. |
Increased calibre pulmonary vessels in the hypoattenuated area |
| C. |
Normal calibre pulmonary vessels in the hyperattenuated area |
| D. |
Reduced calibre pulmonary vessels in the hypoattenuated area |
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