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Case of the Week 374

What's the name of this sign?

  • 45 year-old male with hemoptysis

Axial CT scan of chest

1. Garland's sign
2. Monad's sign
3. Drooping Lily sign
4. Gibbous sign
5. Hampton's hump

Additional Image - Close-up of left upper lobe chest radiograph


Additional Image


Close-up of left upper lobe chest radiograph



2. Monad's sign



More (Click Discussion Tab)

Monad's sign

General Considerations

  • Sickle-shaped lucency, partially surrounding a soft tissue mass in a pulmonary cavity seen on conventional radiography and CT
  • Terminology can be confusing as a similar sign is described for both invasive aspergillosis and secondary, non-invasive, saprophytic aspergillosis

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