This is great news, dude. I can't begin to even tell you how awesome it was to have read that the situation is working out well. I particularly like you mentioning that you are "on the offensive." That's the right attitude, and I am glad Danny is recovering well from the surgery. Coincidence that today is 07/07/07?
Also, good call on requesting the brain MRI. Gotta cover all the bases.
Now, to your question:
If a tumor that produced HCG in the primary (in the testis or elsewhere if it was extragonadal) has metastasized to the bone, it will most likely still produce HCG. This is usually how mets are picked out: the metastasized cells are outside of their "normal" environment. For example, a breast cancer cell that has metastasized to the brain will resemble a breast cancer cell and not look or behave anything like a neuron.
There is a way to figure out if there are mets to the bone: a bone scan. In a bone scan, one is injected with technetium-99 (99Tc), a radioactive element that accumulates in bones. About 3 hours after the injection, the patient is imaged with a "gamma camera", that detects the gamma rays emitted by the tracer. Most of the 99Tc gets absorbed by bones, and areas of high activity shine very brightly. The technique is quite similar to a PET scan, with the difference that the tracers used are not the same (a PET scan uses FDG, fluorodeoxyglucose), the actual physics of detection are different, and a PET scan looks for metabolic activity in mostly soft tissues. Hopefully this made some sense.
I am really happy for you and Danny. I'll go with my wife and kid to Zaftig's tomorrow and have a couple of latkes to your health
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Now, to your question:
Originally posted by dannysbrother
There is a way to figure out if there are mets to the bone: a bone scan. In a bone scan, one is injected with technetium-99 (99Tc), a radioactive element that accumulates in bones. About 3 hours after the injection, the patient is imaged with a "gamma camera", that detects the gamma rays emitted by the tracer. Most of the 99Tc gets absorbed by bones, and areas of high activity shine very brightly. The technique is quite similar to a PET scan, with the difference that the tracers used are not the same (a PET scan uses FDG, fluorodeoxyglucose), the actual physics of detection are different, and a PET scan looks for metabolic activity in mostly soft tissues. Hopefully this made some sense.
I am really happy for you and Danny. I'll go with my wife and kid to Zaftig's tomorrow and have a couple of latkes to your health

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