Tag Archive for: prostate cancer stages

How Does Prostate Cancer Progress? Understanding the Stages of Prostate Cancer

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How Does Prostate Cancer Progress? Understanding the Stages of Prostate Cancer from Patient Empowerment Network on Vimeo.

What do prostate cancer patients need to know about progression and recurrence? Expert Dr. Xin Gao discusses the difference between progression and recurrence and explains what occurs in the body in different stages of prostate cancer.

Dr. Xin Gao is a Medical Oncologist at Massachusetts General Hospital. Learn more about this expert Dr. Gao.

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Transcript:

Katherine:

Dr. Gao, this program is focusing on advanced prostate cancer. Would you walk us through how the disease progresses in each stage?  

Dr. Gao:

Sure. I think advanced prostate cancer can mean a lot of different things, but in general, it means a prostate cancer that has either spread out from the prostate gland itself to other areas of the body or has recurred despite either surgery or radiation-based therapy to the primary prostate tumor. 

In each of these situations, typically the focus would on medication types of treatments and we think about advanced prostate cancer as either hormone-sensitive or hormone-resistant, or the other term in the field for it would be castration-resistant, meaning that the prostate cancer is either sensitive to hormonal therapies or perhaps it’s no longer sensitive to the most common type of hormone therapy called androgen deprivation therapy. So, those are sort of the ways that the cancer can progress, and typically all these cancers start as hormone-sensitive prostate cancers and over time, they may evolve and become resistant and become what we call castration-resistant prostate cancer. 

Katherine:

Okay. So, they’re not numbered as in a lot of other cancers, like stage I, stage II?  

Dr. Gao:

Meaning by stage, oh. So, there are stages. All advanced prostate cancers are by definition stage IV. All advanced cancers, in general, are stage IV but advanced prostate cancer would be stage IV. Most prostate cancers actually present as localized prostate cancer, stage I, stage II, even stage III prostate cancers and the majority of localized prostate cancers are actually, fortunately, quite curable with either surgery or radiation-based therapies.  

Unfortunately, not all are curable, and some will recur despite these curative intent treatments, and others might just be inherently more aggressive biologically, and they could even present with metastatic disease or stage IV disease having spread to other sites outside of the prostate gland, even at diagnosis. 

When prostate cancer metastasizes or spreads, it commonly spreads by lymphatic vessels or by the bloodstream and most commonly, they tend to go to either lymph nodes or bones or some combination of both. More common areas of lymph node spread are in the pelvic areas, kind of near where the prostate gland is, or deep in the abdomen in an area called the retroperitoneum. And then bones more commonly could be in sort of the back or spine bones or in the pelvic bones, but it could go to other areas less common as well. 

What Are Advanced Prostate Cancer Treatment Options?

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What Are Advanced Prostate Cancer Treatment Options? from Patient Empowerment Network on Vimeo.

What is advanced prostate cancer and how is it treated? Expert Dr. Tanya Dorff explains advanced prostate cancer and discusses available treatment approaches, including clinical trial considerations.

Dr. Tanya Dorff is Associate Professor in the Department of Medical Oncology & Therapeutics Research at City of Hope. Learn more about Dr. Dorff.

 

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What Is Advanced Prostate Cancer?

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Transcript:

Katherine:

First, what does it mean to have advanced disease? 

Dr. Dorff:

Advanced prostate cancer signals cancer that’s come back after curative intention or has presented de novo in a way that means we don’t currently have a tool to cure it. That’s at least how I view advanced prostate cancer. You could take a broader definition and consider some high-risk localized patients who need multimodal therapy, but to me, it’s really signaling a shift from something we’re aiming to cure versus something we’re aiming to manage, so that can manifest just as a PSA that’s rising, what we call biochemical recurrence, or it can manifest as visible metastatic disease. 

Katherine:

What does “locally advanced mean? 

Dr. Dorff:

So, “locally advanced” means that it hasn’t metastasized, but it might be involving the local structures, like the seminal vesicles or the bladder or some of the regional lymph nodes, the pelvic lymph nodes. 

Katherine:

How is advanced prostate cancer treated? 

Dr. Dorff:

The cornerstone of treatment for advanced prostate cancer has really been hormone therapy. I think there’s a lot of negative stuff out there on the internet about hormone therapy that I think does a disservice to patients because hormone therapy is truly very, very effective and, for many men, can be quite livable. 

I have patients who live more than a decade on hormone therapy, and they’re running their businesses and they’re raising their grandkids, they’re traveling, they’re running 10Ks, they’re doing all the things that they might want to be doing. That’s not to say there aren’t side effects, but hormone therapy is an effective cornerstone, and I really hope people won’t dismiss it offhand because of the negative things they’ve heard or read about it. 

Katherine:

What about other treatment classes?  

Dr. Dorff:

Most of our other treatments are really layered on top of hormone therapy. We may get to a point – 10 years from now, I don’t know, sometime in the future – when we don’t start with the hormone therapy, so a lot of patients come in asking about the new radiopharmaceutical, the Lutetium-177-PSMA that got approved last year, or about whether chemotherapy can be used. They can be, but they’re really layered on top of hormone therapy, so the hormone therapy is the first treatment, it’s the most effective right now, and then it’s continued as we swap out – we add a novel hormonal agent like abiraterone (Zytiga), or enzalutamide (Xtandi), or one of the others. 

When that is no longer effective, we swap that out, we might use chemotherapy or the radiopharmaceutical. There’s also an immunotherapy that’s been around for more than a decade called sipuleucel-T, and now there’s the targeted therapies – the PARP inhibitors – as well for select patients. 

Katherine:

Where do clinical trials fit into treatment?  

Dr. Dorff:

That’s a great question. I’m so glad you asked. Clinical trials some people mistakenly believe are your last choice, like you’ve gone through every single treatment we have, and then you go to a clinical trial. That’s not the case. Some of the biggest advances in prostate cancer have been when we’ve taken drugs that work in a more advanced resistance setting, like a second- or third-line, and when we move them right up front, first-line, we dramatically amplify their benefit. We dramatically improve survival. 

So, if we don’t think about a clinical trial in the first line, we’re going to miss the opportunity to not only develop those new treatment paradigms, but actually participate in them ahead of when they become the new standard of care down the road. 

Another misconception that people have often about clinical trials is that they are always randomized, there’s always a flipping of the coin in assignment of different treatments, and that they may include a placebo. So, most of our clinical trials at this point do not include placebo. Because we have so many effective treatment options, we’re more and more frequently comparing either two drugs against one, so everyone’s getting at least one effective drug, or we’re not comparing at all, but everyone’s getting some new treatment or some combination of treatments when we’re working out dosing in that scenario, like a Phase II. 

So, clinical trials are really an option at any stage of prostate cancer, even at diagnosis for localized disease all the way through, and truly, I hope people would consider looking at those as options because that’s where some of the most innovative treatment options are going to become available to them. 

Understanding Prostate Cancer Staging and Progression

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Understanding Prostate Cancer Staging and Progression from Patient Empowerment Network on Vimeo.

What are the stages of prostate cancer? Expert Dr. Maha Hussain provides an overview of prostate cancer stages and progression – and explains scans that detect disease to aid in optimal care.

Dr. Maha Hussain is the Deputy Director of the Robert H. Lurie Comprehensive Cancer Center of Northwestern University. Learn more about this expert here.

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Transcript:

Katherine:

Dr. Hussain, we’re going to spend most of this conversation talking about advanced prostate cancer. But before we move on, would you give us a brief overview of the stages of prostate cancer?

Dr. Hussain:

Absolutely. So, with any cancer, we count sort of like four stages. But I would say in prostate cancer the biggest thing is when the cancer is newly diagnosed, which could be confined to the prostate or locally advanced, meaning the cancer has gotten outside the capsule of the prostate but still within that pelvic region.

There is the group of patients who have pelvic lymph nodes at time of diagnosis. And of course, that is the patients who have systemic disease, which would be technically stage four. Now, the systemic disease implies any abnormality that is found on scans that is beyond the public region. So, that could be lymph nodes in the back of the belly. That could be thoracic lymph nodes. That could be neck nodes. That could be lung lesions, of course, or bone, or liver.

Now, the most common area where the cancer goes to is really – when we talk about metastatic disease – is the bone. And then lymph is another area where the cancer goes to. Prostate cancer that is confined to the prostate is curable in the vast majority of patients. There is a category of men who undergo surgery or radiation, and then their PSA begins to go up afterwards.

And this is what we call biochemical relapse. And this is a situation where we know that, in all likelihood obviously, especially of the patients who have had their prostate out, that the cancer has spread. With the current imagine, a good chunk of times, we do not find anything because we’re able to pick up PSA that goes from undetectable to 0.2 to 0.3, but there’s not enough cancer to show up on the scans. We’re hoping, obviously, the better scans, the PET Axumin scan, the PSMA scans are going to help us to identify sites of metastases.

But this is a group of men where if there is no cancer visible and the only thing we’re dealing with is PSA that’s going up, if they’ve had surgery, then

there’s room for what we call salvage therapy with radiation and hormonal treatment. The case is a bit different if there’s only just the prostate – if radiation was given previously. And of course, we talked about metastatic disease.

Katherine:

Once someone has been diagnosed, what tests are used to help understand the aggressiveness of their disease and their overall prognosis?

Dr. Hussain:

Well, I think there is different basic things, as in, what was the extent of the cancer? How did it look under the microscope? And what is the PSA levels? So, these are the general things. There are different sort of genomic panels that the urologist will use to kind of decipher and other things to kind of help with figuring out aggressiveness and things like that. What I would say is this, is a patient who is diagnosed and has a cancer, and at a minimum has what we consider a Gleason 7 prostate cancer – so, that’s the scoring system that is done with the original Gleason score, or the new patterns where it’s talking about intermediate risk to high risk – to me, this is a cancer that needs to be treated.

And again, that’s all to do with if a person has other comorbidities, they have some other terminal condition that’s a separate story. But talking generically, that would be when we would recommend. And these are the patients that are generally not seen by the medical oncologist. They’re seen by the urologist, and then they can refer them to radiation oncology also for consultation.