Hi Calee,
The key to your decision, IMO should be chosing a doctor with moyamoya experience. It's been my experience, that’s what saves lives and the key to success. This is a rare disease and unfortunately not many neuro’s have enough MM experience to make the important decisions for the different MM cases. For example, my 23 year old niece had a stroke and they sent her from our local hospital here, to the University of Pennsylvania in the city, where she was diagnosed with MMD, and they told us that we had some of the best neurosurgeons in the country there, BUT they told us she didn’t need surgery at this time, we should wait, so naturally we believed them. Long story short, she ended up having 4 devastating strokes that left her in a coma, on a feeding tube, paralyzed, etc and fighting for her life. Thank God I found this website. DJ told us to get a second opinion from a MM expert, Dr. Steinberg; he’s one of only a few MM experts in our country who deals with MM on a daily basis. Dr. Steinberg saved her life, but not before the severe damage was done. It could have been prevented had we had surgery before the strokes. That’s why I urge people to get a doctor with MM experience. We didn’t even know that surgery was the ONLY option for treatment; her quality of life may not have been changed forever as it is now. They may have been good doctors, but NOT as far as MM experience or they would have known the risk we were taking by waiting.
MM is a progressive disease, it gets worse over time and you’re ALWAYS at risk for a stroke or hemorrhage with MMD, so prompt treatment is very important! Delay in treatment is the particular pitfall we see here every day because of the lack of experience and understanding of this rare disease in the medical community, and delay in treatment is dangerous and risky. With MMD, you know a stroke is coming, you just don’t know when.
There are different types of surgery for MMD and this decision is vital for success. It’s a personal decision for each patient because no two MM cases are alike, with all the personal factors involved for each person and the degree of blockage for each individual, but never the less, which surgery that’s chosen is crucial.
The “direct” bypass (STA-MCA) provides immediate blood flow around the occlusion and is generally the option preferred for adults. It is usually used when there is a urgent need for blood to the brain. For example, if one or both internal carotid arteries are completely blocked, as was the case for my niece. The ‘Indirect’ type bypasses (EDAS, EMS) take time for arteries to "grow" and provide the proper blood flow. Time varies from patient to patient but it could take anywhere from a month to 6 months to a year to see the benefit. Also the “indirect” type surgery will often be used if the narrowing has not yet progressed very far. You can see why the different types of surgery chosen is so very important and why experience is so vital! These are all important factors that a MM expert would best know from their experience.
As far as the Dr.’s opinion that said.
“Tom’s brain has done the work of re-routing and wants to see Tom in one year unless he has another stroke or brain hemorrhage.” That’s unbelievable!!! That immediately tells me and anyone who knows about MM, that this doctor has absolutely NO experience with MMD!!!! My God, wait until he has a stroke or hemorrhage?? Surgery is to PREVENT a stroke or hemorrhage! I’ve seen what a stroke and hemorrhage can do and we’ve even seen death when you wait with MMD. That Dr. shouldn’t even be an option, IMO. The re-routing he’s speaking of are ABNORMAL MM vessels, and although they are supplying blood and helping at the moment, they are weak and fragile vessels and they can rupture or bleed at any time, which can cause a stroke/hemorrhage or God forbid, worse. These MM vessels are not equipped to deliver the volume of blood needed over a long period of time. This is why ALL MM patients are ALWAYS at risk of having a stroke or hemorrhage with MMD.
For what it's worth, If it were me or if we had to do it all over again, I'd beg borrow and steal to get the best doctor in the world, Dr. Steinberg. He has done over 400 successful surgeries for MMD and has the best MM program in the country. Ask those doctors you've mentioned how many successful surgeries they have done for MMD? That may help you decide right there.

I will keep you and Tom in my thoughts and prayers.
Mar