I think it's a photo of a medical report.
I tried grabbing message source and extracting what looked like base64 data and decoding that, but didn't get anything usable back.
iOS just says "null image" when I swipe to it, even with "describe images" on.
NVDA's Win10 OCR doesn't do much of anything, just gives me one line of garbage!
Any help much appreciated.
-- Rich