Successful resection of colonic metastasis of lung cancer after colonic stent placement: A case report and review of the literature

Figure 2 Colonoscopy and subsequent gastrografin enema. A: Colonoscopy depicts a mass protruding into the lumen covered with smooth and reddish mucosa, the scope could not be advanced through the lesion; B: Gastrografin enema shows an apple core sign with luminal narrowing (white arrow), approximately 3 cm in length, in the descending colon.