Fig. 7From: Histological transformation to signet-ring cell carcinoma in a patient with clinically aggressive poorly differentiated adenocarcinoma of the ascending colon after response to chemotherapy plus cetuximab: a case reportEndoscopic findings of the recurrent tumor with obstructive jaundice. Endoscopy showed poor extension of the descending part of the duodenum and exposure of the recurrent tumor. Biopsy revealed cancer cells with PDA-like histology with scattered signet-ring-like cellsBack to article page