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Vertebral Pseudolesion on Lateral Chest Radiograph

Ian Hammond1, Adnan Sheikh1, Pasteur Rasuli1 and Carolina A. Souza1

1 All authors: Department of Radiology and Diagnostic Imaging, The Ottawa Hospital, 501 Smyth Rd., Ottawa, ON, Canada K1H 8L6.


Figure 1
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  		Fig. 1A —57-year-old woman with breast cancer. Lateral chest radiograph shows apparently sclerotic lesion (arrow) in T3 vertebral body that was worrisome for osteoblastic metastasis.

 

Figure 2
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  		Fig. 1B —57-year-old woman with breast cancer. Frontal chest radiograph shows no abnormality at level of upper thoracic spine. Metallic clips from previous axillary nodal dissection are evident.

 

Figure 3
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  		Fig. 2 —60-year-old healthy male volunteer. Target fluoroscopic image in lateral projection shows concave portion of superimposed scapula (thick arrow) is immediately posterior to anterior margin of vertebral body (thin arrow).

 

Figure 4
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  		Fig. 3A —Disarticulated scapulae and thoracic spine of skeleton positioned to reproduce vertebral pseudolesion. Schematic (A) and radiograph (B) show concavity of scapular neck as it leads to scapular spine is responsible for arcuate line that forms anterior margin of vertebral pseudolesion (shading, A). Projection of magnified scapula (B) enhances pseudolesion causing apparent sclerosis. A = nonmagnified scapula, Gle = glenoid process, Cor = coracoid process, Acr = acromion of scapula.

 

Figure 5
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  		Fig. 3B —Disarticulated scapulae and thoracic spine of skeleton positioned to reproduce vertebral pseudolesion. Schematic (A) and radiograph (B) show concavity of scapular neck as it leads to scapular spine is responsible for arcuate line that forms anterior margin of vertebral pseudolesion (shading, A). Projection of magnified scapula (B) enhances pseudolesion causing apparent sclerosis. A = nonmagnified scapula, Gle = glenoid process, Cor = coracoid process, Acr = acromion of scapula.

 

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