This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
[{'content': 'Prostate Specific Antigen is specific to \nSelect and explain. \nA. BPH, B. Prostatitis, C. Prostatic cancer, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: (D) All of the above# PSA is secreted by the epithelial cells of the prostate gland.> PSA is not a unique indicator of prostate cancer, but may also detect prostatitis or benign prostatic hyperplasia. Only 30 percent of patients with high PSA have prostate cancer diagnosed after biopsy.> PSA is used for Prostate cancer screening and levels between 4 and 10 ng/mL (nanograms per milliliter) are considered to be suspicious and confirm the abnormal PSA with a repeat test.> PSA levels are monitored periodically every 6-36 months after treatment for prostate cancer.', 'role': 'assistant'}]