Distal cholangiocarcinoma mimicking pancreatic ductal adenocarcinoma successfully converted to resection following PD-1/CTLA-4 bispecific immunotherapy (cadonilimab) combined with nab-paclitaxel–based chemotherapy: a case report providing preliminary real-world insight
Background Distal cholangiocarcinoma (dCCA) and pancreatic ductal adenocarcinoma (PDAC) share highly overlapping clinical presentations and radiological features, often leading to preoperative misdiagnosis. Therapeutic strategies for these malignancies differ substantially. While PDAC is commonly treated with gemcitabi...