I am 55 years old and my Dre is normal prostate weighs 25 gram.I have a psa of 4.9 Is cancer likely?

It is not possible to definitively say whether or not cancer is likely based solely on your age, prostate weight, and PSA level.

A PSA level of 4.9 ng/mL is considered elevated and warrants further evaluation, however, an elevated PSA does not necessarily mean that you have prostate cancer. There are many other factors that can contribute to an elevated PSA, such as benign prostatic hyperplasia (BPH), prostatitis, or a recent prostate biopsy.

To determine if you have prostate cancer, your doctor will likely recommend additional tests, such as a digital rectal exam (DRE), transrectal ultrasound (TRUS), and/or a prostate biopsy. These tests can help your doctor assess the health of your prostate and determine if there are any suspicious areas that may need to be further evaluated.

Your doctor can also order a prostate-specific antigen (PSA) density test, which takes into account your prostate size and can help determine if your PSA level is elevated relative to the size of your prostate.

It's important to follow up with your doctor for further evaluation and testing to determine the cause of your elevated PSA and whether or not prostate cancer is present.