<s>[INST] I had a PSA test, and it came back 11 after my doctor did a prostate examination and found a  very small lump.Now he wants to do a biopsy and im not wanting that.I did research online later after the results came back,  and it said not to ejaculate 48 hours before the exam well, I did that 20 mins before my exam, and that made my PSA 11.why do I need a biopsy? [/INST] Hello,The high PSA with suspicious lump in prostate may indicate underlying abnormality in prostate in form of malignancy or else.To confirm the pathology as non-malignant or malignant, prostate biopsy is recommended.Hope I have answered your query. Let me know if I can assist you further.Regards,Dr. Bhagyesh V. Patel </s>