Understand Prostate Volume (cc vs. grams)
Prostate size comes from an ultrasound or MRI. It is listed in cubic centimeters (cc) or grams, and for the prostate those numbers are about the same. A prostate that has not grown much is often about 20 to 25 cc. Moderate growth is often about 40 to 80 cc. Some prostates are larger than 100 cc. Size changes which procedures are even possible to discuss. Office treatments such as Rezum or UroLift are more often discussed under about 80 to 100 cc. For a very large prostate, doctors more often talk about surgery that removes more tissue, such as HoLEP, or about PAE. Size does not choose the treatment by itself.
Questions to ask
- What is my exact prostate volume in cc or grams on my most recent imaging?
- Does my prostate size exclude me from less-invasive office procedures like Rezum, UroLift, or iTind?
- If my prostate is very large (e.g. over 80cc or 100cc), are we looking primarily at simple prostatectomy, HoLEP, or prostate artery embolization (PAE)?
The middle of the prostate
The prostate has two side parts and a middle part. In some men the middle part grows up into the bladder. Reports may call that intravesical protrusion. It can act like a ball valve and block the opening when you try to pee. Ask your urologist how prostate shape affects which options are discussed.
Questions to ask
- Do my pictures show a middle lobe, or a part of the prostate sticking into the bladder?
- If it sticks into the bladder, how far, and does that make side-only implants a poor fit?
- Which options can treat a middle lobe if I have one?
How the bladder is coping
How the bladder is coping matters as much as prostate size. A clinic may time how fast urine comes out and, right after you pee, use ultrasound to see how much is left. Leftover urine is called the post-void residual. A lot left behind can raise the chance of infections, bladder stones, or strain on the kidneys. What counts as a lot depends on you. Ask your doctor to explain your number. Do not decide from a chart on your own.
Questions to ask
- How much urine is left after I pee, and does that amount worry you for my bladder or kidneys?
- Does my bladder wall look thickened or stretched from pushing against a blockage?
- If my bladder has gotten weak, will opening the prostate be enough for my symptoms to improve?
Clarify the PSA (Prostate-Specific Antigen) Context
PSA is a protein prostate cells make. A higher number can happen with prostate cancer. It can also rise when the prostate is enlarged, when you cannot empty, when you have an infection, or after a recent exam. An enlarged prostate is not cancer, but the symptoms can overlap, so a high PSA needs its own conversation before a procedure for urinary symptoms. That may include an exam, a repeat blood test, or an MRI. This page cannot tell you what your number means.
Questions to ask
- What is my baseline PSA level, and how does it relate to my overall prostate volume and age?
- Could my recent urinary retention, infection, or medication (like finasteride) be affecting how we interpret my PSA numbers?
- Do we need a prostate MRI or biopsy to rule out prostate cancer before we perform any procedures or surgeries for my BPH symptoms?
Common questions
How is prostate size measured?
By ultrasound through the belly or rectum, by cystoscopy, or by MRI or CT. Guidelines suggest clinicians consider assessment of prostate size and shape before a procedure1.
Why does size matter for treatment?
Some procedures are only for certain sizes. For example, urethral lift and water vapor therapy are for 30–80 g1, and TUIP is for 30 g or smaller1. Open or robotic prostatectomy is for large to very large prostates1.
What is a "middle lobe"?
It is prostate tissue that pushes up into the bladder opening. A blocking middle lobe rules out urethral lift1.
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