case_images: PMC7430079_01
case_images: Endoscopic appearance of the esophagus demonstrating nodular mucosa,
  extending from 23 to 35 cm from incisors. The Paris classification type
  was 0-IIa+IIc, indicating superficial elevated lesions (black arrow) as
  well as areas with central depressions (blue arrow).
case_images: 10.1177_2324709620941318-fig1.jpg
case_images: PMC7430079_01_10.1177_2324709620941318-fig1.jpg
case_images: fig1-2324709620941318
case_images: His prior endoscopies showed salmon-colored nodular mucosa, with a Paris classification phenotype of 0-IIa+IIc, located at 23 to 35 cm from the incisors (Figure 1).
case_images: Histopathologic examination of the biopsy specimen from nodular esophagus
  showing Barrett's mucosa with high-grade dysplasia (arrows), but no
  evidence of malignancy (hematoxylin and eosin staining; 400x).
case_images: 10.1177_2324709620941318-fig2.jpg
case_images: PMC7430079_01_10.1177_2324709620941318-fig2.jpg
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case_images: Biopsy confirmed multifocal high-grade dysplasia, with no evidence of carcinoma (Figure 2).
case_images: Gross morphology of the esophageal lesion after en bloc circumferential
  removal using endoscopic submucosal tunnel dissection.
case_images: 10.1177_2324709620941318-fig3.jpg
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case_images: It resulted in the en bloc removal of the 12-cm long, circumferential dysplastic esophageal lesion (Figure 3).
case_images: Postprocedural barium swallow showing no visible evidence of a leak.
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case_images: Postprocedural barium swallow showed no evidence of a filling defect (Figure 4).
case_images: The histopathologic analysis of the resected specimen confirmed the
  presence of dysplastic Barrett's mucosa (arrows) and there was no
  evidence of malignancy (hematoxylin and eosin staining; 400x).
case_images: 10.1177_2324709620941318-fig5.jpg
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case_images: Pathologic analysis of the resected specimen confirmed dysplastic Barrett's mucosa, with no neoplastic changes (Figure 5).
case_images: PMC7430079_02
case_images: Upper endoscopy showing Barrett's esophagus (Prague C3M4), located at 41
  to 44 cm from the incisors (blue arrows). A dysplastic mass lesion noted
  at 42 cm from the incisors (black arrows), the morphology of the lesion
  was consistent with the Paris classification type, protruding sessile
  (Is).
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case_images: PMC7430079_02_10.1177_2324709620941318-fig6.jpg
case_images: fig6-2324709620941318
case_images: Upper endoscopy showed a mass lesion, morphologically consistent with the Paris classification type of protruding sessile (Is), noted at 42 to 44 cm from the incisors (Figure 6).
case_images: Endoscopic features of the gastroesophageal junction dysplastic mass
  located at around 4 to 5 o'clock position (arrows).
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case_images: The gastroesophageal junction mass was located at 4 to 5 o'clock position (Figure 7).