Korean J Gastroenterol.  2021 Jun;77(6):317-320. 10.4166/kjg.2021.081.

Colonic Granular Cell Tumors

• Lee CM

• KMID: 2516895
• DOI: http://doi.org/10.4166/kjg.2021.081

Figure

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  Fig. 1 Colonoscopy findings. A 1.5 cm-sized protruding mass with a yellow granular surface can be seen in the proximal ascending colon. The mass resembles a molar tooth due to a slight depression in the center.

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  Fig. 2 Endoscopic ultrasound findings of a granular-type heterogeneous hypoechoic lesion in the submucosal layer. The bold arrow indicates an irregular border with the submucosal layer.

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  Fig. 3 (A) Histology findings of a colonoscopic biopsy. Nests of large polygonal cells with abundant eosinophilic granular cytoplasm are shown (S-100 stain, ×100). (B) Postoperative pathology findings of nests of large polygonal cells with abundant granular eosinophilic cytoplasm and hyalinization in the submucosal layer (hematoxylin and eosin stain, ×40). (C) CD 68 staining (×40) was positive. (D) S-100 staining (×40) was positive.

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