RESUMEN
The severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) pandemic continues to affect millions of people and impact health-care delivery worldwide. New data and insights into the diagnosis and treatment of SARS-CoV-2 are emerging rapidly. Several prognostic biomarkers have been studied in patients with SARS-CoV-2. Among those biomarkers is the carcinoembryonic antigen (CEA). We report the case of a 46-year-old male with a history of colon cancer who was found to have an elevated CEA level during routine surveillance. Further workup confirmed a diagnosis of SARS-CoV-2 infection. The CEA level normalized with the resolution of the infection.
RESUMEN
Immunotherapy is an effective new approach in the treatment of many malignancies. However, pancreatic ductal adenocarcinoma (PDAC) does not usually respond to immunotherapy. We discuss the case of a patient with metastatic microsatellite instability-high PDAC who had a prolonged response to single-agent pembrolizumab for almost 3 years.