PMC6465741_01
Clinical and histopathological (magnification x200, hematoxylin and eosin stain) appearance of buccal mucosa changes.
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F1
Buccal changes were accompanied by dryness and pain in the oral cavity (Fig. 1). Biopsy was performed, and pathohistological analysis found a hyperkeratotic epithelium with elongated epidermal extensions and apoptotic keratinocytes, a finding which was consistent with LP (Fig. 1).
Endoscopic view of the esophagus before and after dilation and systemic corticosteroid treatment.
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F2
On esophagogastroscopy, circular stenosis in the upper third of the esophagus was found, esophageal lumen being reduced to 1 cm, and its surface covered with pseudomembranaceous layers (Fig. 2). Control endoscopic examination revealed an improvement of mucosal changes, but stenosis is still not passable for endoscope (Fig. 2).
Contrast radiography and CT scan of esophageal stenosis.
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F3
Radiologic studies were also performed, and they showed 9-cm-long esophageal stenosis with a lumen reduction to 5 mm, while CT revealed thickening of the esophageal wall (Fig. 3).