I think Dr Mantz points out a benefit of surgery - you get to put the whole mount specimen under a microscope and know for sure what was there. With radiation, you never really know. For myself, I found I was comfortable not knowing. Others may be uncomfortable without that certainty. This is true for prostatectomy and for lymph nodes (PLND). There have been efforts to locate infected LNs using USPIO MRI or some of the newer PET scans. They may work when there is a large degree of cancer infiltration, but only pathology can find microscopic metastases.
There are several difficulties with PLND:
• Lymph vessels and nodes are small and invisible against the background of colored tissues and blood vessels
• They are sometimes hidden within visceral fat, which makes them nearly impossible to find by any means.
• Anatomic variation is huge. The nodes, associated with blood vessels, are in different
locations in every man.
• Lymph node chains are networked rather than branched like blood vessels. Networks are random and unpredictable.
Because the nodes are difficult to locate, there has been experimentation with injecting fluorescent dye (indocyanine green) to make them easier to find. ePLND is popular in Europe but much rarer in the US. Mayo Clinic is a notable exception. It's still questionable whether ePLND gets them all.In the US, the more common procedure is limited PLND - the surgeon takes out a sample of a few LNs that he can easily find and they are sent to pathology. If the pathologist finds cancer in any, the patient is referred for adjuvant radiation.
You are justifiably wary of adjuvant radiation - SEs are worse than either alone, and radiation may impede healing. With whole pelvic radiation given as part of a primary therapy, you have the opportunity to zap and cure pelvic LNs that a surgeon may not be able to find, and the field can be extended to suit the individual anatomy. Anatomy is an important consideration - it's one situation where having excess visceral fat is a big benefit.
I'll answer your questions as best as I can:
Can someone go in and do lymph node dissection laproscopically so we can see if it spread without having to go through RP? Aside from the difficulties mentioned above, some believe that there is no value at all to limited PLND. They argue that it often misses other infected LNs, and if you are doing surgical removal at all, only ePLND should be done.
Is extended pelvic lymph node dissection for prostate cancer the only recommended option? A systematic overview of the literatureDo surgeons still do pathology on lymph nodes before removing prostate, then leaving prostate if they find positive nodes?Nope - at least not the 3 urologists I asked. I also wanted to know if they would stop the operation if they found cancer near the neurovascular bundles. They all laughed at my question. The only time they will do that is if they see extensive cancer that could not be treated with adjuvant radiation.
Is there actually survival value in doing RP with hormones and radiation? hormones - no - clinical trials so far have not demonstrated any added value. Radiation - certainly - adjuvant and salvage radiation are done all the time. Or did you mean neoadjuvant radiation? No - that's never done for prostate cancer. Radiation makes the prostate more difficult to remove, and why would you do surgery when the radiation is expected to be curative? That said, I know of 3 nightmarish clinical trials where they are doing that.