Fig. 1Patient appearance findings. (A) Hair pull test showed that more than 10 hairs were pricked out. (B) Black pigmentation and (C) nail dystrophy was observed in both hand.
Fig. 2Endoscopic findings. (A) Several hundred 0.5- to 2.5-cm-sized, strawberry-like polyps with normal mucosa in the gastric antrum. (B) Numerous tiny polyps in the small bowel on capsule endoscopy. (C) A 15-mm-sized, grape-shaped polyp (black arrow) with thousands of polyps in the transverse colon (pathologically confirmed adenocarcinoma in situ). (D) A 10-mm-sized, round-shaped polyp (black arrow) in the ascending colon (pathologically confirmed serrated adenoma).
Fig. 3Pathologic findings of colonoscopic polypectomy. (A) Inflamed lamina propria, proliferated tortuous and cystic dilated glands (H&E stain, ×200), (B) adenocarcinoma in situ with background low grade tubular adenomas (H&E stain, ×200), (C) adenocarcinoma in situ (H&E stain, ×400), and (D) serrated adenoma (H&E stain, ×400) were observed.
Table 1Cronkhite-Canada Syndrome in South Korea