Marked Elevation of Carcinoembryonic Antigen Without an Identified Primary Gastrointestinal Tumor

Joshua K. Salabei; Dhaval Upadhyay; Asad Haider; Anthony Nanajian; Leora Frimer; Kipson Charles; Zeeshan H. Ismail; Selina Imboywa; Awaad Khan; Nundia Louis; Uma G. Iyer; Joshua K. Salabei; Dhaval Upadhyay; Asad A. Haider; Anthony Nanajian; Leora Frimer; Kipson R. Charles; Zeeshan Ismail; Selina Imboywa; Awaad Khan; Nundia Louis; Uma G. Iyer

doi:10.7759/cureus.20621

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