The Journal of Minimally Invasive Surgery :eISSN 2234-5248   pISSN 2234-778X

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Fig. 2. (A) The microscopic pathological examination reveals a well-delimited expansile tumor, measuring 1.6 × 1.6 × 0.4 cm, invading the submucosa (H&E stain, ×12.5). (B) The neoplastic glands are composed of pseudostratified cuboidal to columnar and mucin-depleted (absence of goblet cells) epithelial cells with eosinophilic cytoplasm and vesicular nuclei. Focal tumor-infiltrating lymphocytes and intraluminal pink material from the neoplastic glands are also noted (H&E stain, ×200). (C, D) The pink material shows intensive periodic acid–Schiff-diastase-positive (C, ×40) and Alcian blue-positive staining (D, ×40). (E, F) The tumor-infiltrating lymphocytes consist of mixed CD3- (E, ×200) and CD20-positive cells (F, ×200).
Journal of Minimally Invasive Surgery 2022;25:32~35
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