case_images: PMC3590504_01
case_images: (a), (b) Colonoscopic view of the signet cell tumour in sigmoid colon. The colonoscopy could not been completed according to the obstruction.
case_images: CRIM.ONCMED2013-695450.001.jpg
case_images: PMC3590504_01_CRIM.ONCMED2013-695450.001.jpg
case_images: fig1
case_images: Then colonoscopy and gastroscopy were performed and while there was no pathological sign in gastroscopy, an obstruction in sigmoid colon has been detected by colonoscopy (Figures 1(a), and 1(b)).
case_images: A number of signet cells regarding signet cell carcinoma can be seen in the submucosal layer of vascular structures. (H&E; 100x).
case_images: CRIM.ONCMED2013-695450.002.jpg
case_images: PMC3590504_01_CRIM.ONCMED2013-695450.002.jpg
case_images: fig2
case_images: Biopsy results were reported as signet ring cell carcinoma of sigmoid colon (Figure 2).