This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Pathology
Which of the following markers increases the risk of recurrent carcinoma breast? 
Select and explain. 
A. Ca 125, B. Ca 19-9, C. Ca 27-29, D. PSA
C: Ca 27-29
Answer: C: Ca 27-29 
Explanation: C i.e. Ca 27-29Ref: ASCO GuidelinesExplanation:Breast Carcinoma Recurrence:ASCO recommends that the following tests and imaging tests are not used to watch for a recurrence when a person has no signs or symptoms that the breast cancer has returned:Tumor marker tests for CEA, CA 15-3 and CA 27-29.CT scan.PET scan.Bone scan.