Metastatic pulmonary adenocarcinoma after 20 years of primary pancreatic adenocarcinoma resection: A case report and literature review.

Introduction: Recurrency of Pancreatic adenocarcinoma after resection can be as high as 85%. Most of the recurrences happen within two years of pancreatic resection and may be local or present as a metastatic disease.

Clinical Presentation: Herein, we report a patient who presented with metastatic pulmonary adenocarcinoma after 20 years of curative resection of pancreatic adenocarcinoma. Histopathology of the pulmonary mass confirms the diagnosis as a metastatic adenocarcinoma of gastrointestinal origin.

Conclusion: Despite the length of the disease-free period, lung metastasis of pancreatic cancer is the most likely diagnosis according to the clinical course, histopathology and biochemical tumor marker. Tumor marker Ca19-9 is very sensitive and reliable test to detect recurrency of pancreatic cancer even if the imaging modalities cannot detect the tumor.