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Table 1 Diagnostic modalities which the patient underwent to obtain a diagnosis

From: A case of occult intrahepatic cholangiocarcinoma diagnosed by autopsy

Examination Findings
Tumor marker CEA 12.9 mg/ml
CA19-9 658.5 U/ml
Gastrointestinal and colorectal endoscopy No significant findings
CT Multiple swollen abdominal and axillary lymph nodes
PET-CT Multiple swollen abdominal and axillary lymph nodes without abnormal uptake
Immunohistochemistry of the lymph node CK7 and CK19 were positive
CK20 was almost negative
ERCP No significant findings
Biopsy from epithelium of the bile duct No malignancy