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