case_images: PMC10352591_01
case_images: Dabigatran 110 mg capsule contains indigo carmine.
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case_images: He received dabigatran 110 mg twice daily for 5 years for non-valvular AF (Figure 1).
case_images: Sagittal computed tomography reveals thickening of the entire esophageal wall with an upper esophageal predominance (a). Horizontal computed tomography shows compression of the esophagus by the left atrium (b).
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case_images: Upon examination, computed tomography revealed a thickening of the entire esophageal wall, with an upper esophageal predominance (Figure 2a,b).
case_images: The cervical and upper thoracic esophagus show blue pigmentation, edematous changes, partial narrowing, and longitudinal sloughing of esophageal casts (a). Edematous changes, partial narrowing, and longitudinal sloughing of esophageal casts are observed throughout the esophagus (b)
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case_images: Esophagogastroduodenoscopy was performed, which revealed that the cervical and upper thoracic esophagus had blue pigmentation (Figure 3a). Further, edematous changes, partial narrowing, and longitudinal sloughing of esophageal casts were observed throughout the esophagus (Figure 3a,b).
case_images: One month after the switch to edoxaban, esophagogastroduodenoscopy shows a significant improvement, revealing the resolution of the bluish discoloration and edematous changes.
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case_images: The follow-up esophagogastroduodenoscopy showed significant improvements, revealing the resolution of the bluish discoloration and edematous changes (Figure 4), and the patient's complaints regarding the tightness of the chest and anorexia were also resolved.