PMC3855060_01
Esophageal cancer. The esophageal cancer in our case is illustrated from the proximal (A-C) to the distal (M-O) ends. (A, D, G, J, and M): endoscopy; (B, E, H, K, and N): diffusion-weighted magnetic resonance imaging; (C, F, I, L, and O): contrast-enhanced computed tomography.. Notes: Arrow: an ulcer in the esophageal carcinoma; arrowhead: ulcer of the cancer corresponding to arrow.
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Endoscopy revealed an elevated lesion in the thoracic esophagus (Figure 1A, D, G, J, and M). High-intensity signals were observed in the esophagus upon DWI (Figure 1B, E, H, K, and N). These signals corresponded to those from the endoscopy (Figure 1A, D, G, J, and M). The anterior parts of the esophagus did not have high signal intensity (indicated by arrowheads in Figure 1). Thickening of the wall of the esophagus was found by contrast-enhanced CT (Figure 1C, F, I, L, and O).
Comparison of diffusion-weighted magnetic resonance imaging with background body signal suppression and 18F-fluorodeoxyglucose positron emission tomography (PET) in esophageal cancer. DWIBS sequence showed esophageal cancer (A). Positron emission tomography (PET) showed a strong signal in the carcinoma. (A) Coronal view of the diffusion-weighted magnetic resonance image; (B) PET scan; (C) sagittal view with DWIBS; (D) sagittal view from PET scan.. Note: Arrowhead: lumen of the esophageal cancer.
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A longitudinal space suggestive of a lumen was seen in the center of the esophagus on the cross-sectional DWI image (Figure 2A). A strong signal was also observed on the cross-sectional image from the PET scan (Figure 2B). DWIBS demonstrated a strong signal in the esophagus (Figure 2C). PET scanning showed a strong signal in the esophagus (Figure 2D). However, the detailed structure was obscure on the PET scan (Figure 2D).