PMC6159178_01
Plain chest radiograph displayed a metallic object (arrow) at the thoracic inlet to the left of midline at T2 level.
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A chest radiograph demonstrated a metallic object at the level of the second thoracic vertebra to the left of the trachea (Figure 1).
Non-contrast CT of neck in axial (a and c) and coronal (b and d) reformats showed the capsule endoscope at the left lower neck. The metal aliasing artefacts obscure the adjacent soft tissues (a and b). The endoscope in Zenker's diverticulum was better depicted after the artefacts were markedly reduced with metal artefact reduction.
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To pinpoint the exact anatomical location of the foreign body a non-contrast CT scan of the neck (Figure 2) was performed.