1. Coughing Up a Diagnosis: A Cavitary Lung Lesion with Worsening Eosinophilia 
Hiroshi Sekiguchi, MD, Jun Suzuki, Bobbi S. Pritt, MD, Jay H. Ryu, MD 
The American Journal of Medicine 
Volume 126, Issue 4, Pages (April 2013)
DOI: /j.amjmed
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2. Figure 1
A chest x-ray exposed a cavitary lesion in the right lower lobe.
The American Journal of Medicine  , DOI: ( /j.amjmed )
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3. Figure 2
Computed tomography (CT) of the chest demonstrated a cavitary lesion measuring 5.9 × 5.0 × 6.8 cm in the right lower lobe and an air-fluid level within the cavitary lesion.
The American Journal of Medicine  , DOI: ( /j.amjmed )
Copyright © 2013 Elsevier Inc. Terms and Conditions

4. Figure 3
A chest CT scan with a lung window disclosed a floating membrane inside the cavity. This is known as the serpent sign.
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5. Figure 4
An echinococcal hooklet was seen on a wet preparation of the patient's sputum (unstained, 1000x).
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6. Figure 5
This surgical specimen came from the patient's right lower lobe. A, It contains a granulomatous abscess with fragments of a thick laminated acellular layer (left, 200x). B, A degenerated echinococcal protoscolex is present as well (right, 400x). This is consistent with a hydatid cyst caused by E. granulosus (hematoxylin and eosin stain).
The American Journal of Medicine  , DOI: ( /j.amjmed )
Copyright © 2013 Elsevier Inc. Terms and Conditions