Clinical pathological characteristics of “crawling-type” gastric adenocarcinoma cancer: A case report

Figure 1 History of present illness. A: Gastroscopy shows that the mucosa of the gastric sinus is thickened, red and white, and the sheet is congested; B: Indigo carmine staining is shallow depression and the surrounding boundary is clear.

Figure 2 Imaging examinations. A: Results of upper abdominal enhanced computed tomography examination after admission; B: Ultrasound gastroscopy suggests that the lesion is located within the mucosa.

Figure 3 Narrow-band imaging endoscopy. A: Under narrow-band imaging endoscopy, the lesions were dark tea-coloured and the boundary was clear; B: Under magnifying endoscopy, the micro glandular structure on the surface of the lesions was, of different sizes, and the microvessels were slightly tortuous and expanded, forming a bright boundary with the periphery.

Figure 4 Immunohistochemical examination results. A: Ki-67 positivity in tissue; B: MUC2 partially positive; C: MUC5AC negative; D: MUC6 partially positive (× 10).

Figure 5 Hematoxylin and eosin stain of pathological tissue. A: Poorly differentiated adenocarcinoma cells were detected only in the submucosa and were restricted at the low elevated lesion; B: The density of the gastric submucosal gland is low, and the basement membrane of the gland is discontinuous.

Figure 6 After endoscopic submucosal dissection treatment, the patient reviewed their endoscopic findings. A: Common endoscopic findings after Endoscopic submucosal dissection treatment; B: The endoscopic findings after Indigo carmine staining.