Unfortunately I don't have a digital camera nor do I have a scanner for scanning regular photos. You will have to take my word for what I say. Some of these things that I passed are about 4mm; some are bigger because they consist of several stuck together.
Yet the bile ducts can only expand about 2mm maximum, even with dilation by magnesium sulfate. In other words these are too large to have come from the gallbladder through the bile ducts.
Some are dark brown; most look like, well, stones. You know - round pebbles. I didn't save everything that landed in the strainer, maybe 10% of them, or approx. 50 of these things I call "stones"
I make no claims for anything - only that I know what a "stone" is. Why would I care if it's calcium oxalate or a "real" stone - whatever that means? Are we supposed to have these calcium oxalate things in our bodies? If we are, why did they choose to come out?
Calcium oxalate can easily be formed from diet. Certain foods and drinks are high in oxalic acid such as rhubarb, kale, purslane, coffee, tea, etc. Oxalic acid is also formed from the breakdown of excess ascorbic acid (vitamin C). Oxalic acid readily binds with calcium forming an insoluble complex of calcium oxalate. Therefore ingesting oxalic acid and calcium sources at the same time can easily form "stones" in the digestive system. But these are not gallstones.
I looked up "gallstones" on itmonline. An article there by Subhuti Dharmananda, PhD. defines Gallstones as follows:
"Gallstones are primarily comprised of cholesterol and calcium, as calcium bilirubinate or calcium palmitate. Depending on the precise composition, the stones may be soft (more cholesterol) or relatively hard (more calcium). There may be a large number of small sticky stones, or just one large hard stone, as well as many intermediate conditions, such as a few medium size firm stones (see Figure 3). The presence of stones may be accompanied by inflammation of the gallbladder wall (cholecystitis). Cholecystis may stimulate stones to form, or the stones may induce such inflammation, with each condition progressively worsening the other."
Yes, this is all true. But the majority of real gallstones are cholesterol based and greenish. Bilirubin stones are more rare and are darker. But nether are grayish as you described these stones. Again this is why I say they are more likely calcium oxalate stones.
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