case_images: PMC10822694_01
case_images: Nonulcerative gastric antral mass (light blue arrows) causing partial obstruction of the gastric outlet
case_images: cureus-0016-00000053114-i01.jpg
case_images: PMC10822694_01_cureus-0016-00000053114-i01.jpg
case_images: FIG1
case_images: Figure 1. Furthermore, EUS revealed approximately a 3.3 cm mass that was heterogeneously enhancing and contained multiple hypoechoic densities suggestive of focal necrosis within the submucosal layer (Figure 2). Endoscopic forcep pressure was applied to the mass and showed no surface indentation (negative pillow sign), highly suggestive of malignancy (Figure 1).
case_images: EUS revealing a 3.3 cm submucosal mass with areas of hypodensity suggestive of focal necrosis
case_images: cureus-0016-00000053114-i02.jpg
case_images: PMC10822694_01_cureus-0016-00000053114-i02.jpg
case_images: FIG2
case_images: EUS revealed approximately a 3.3 cm mass that was heterogeneously enhancing and contained multiple hypoechoic densities suggestive of focal necrosis within the submucosal layer (Figure 2). Endoscopic forcep pressure was applied to the mass and showed no surface indentation (negative pillow sign), highly suggestive of malignancy (Figure 1).
case_images: Surgical pathology specimen revealing focal area of surface dysplasia with cells invading the submucosa with intact muscularis propria. Histology confirms a grade 2 moderately differentiated, mixed carcinoma of discrete glandular and signet-ring morphology with poorly cohesive cellular components.
case_images: cureus-0016-00000053114-i03.jpg
case_images: PMC10822694_01_cureus-0016-00000053114-i03.jpg
case_images: FIG3
case_images: Surgical pathology confirmed a 3.3 cm tumor with invasion through the submucosal layer (Figure 3). Histology confirmed a grade 2, moderately differentiated mixed adenocarcinoma with both discrete glandular and signet-ring morphology with poorly cohesive cellular components (Figure 3).