Final answer:
Vitamin B12 deficiency polyneuropathy autopsy findings
Step-by-step explanation:
Autopsy findings of Vitamin B12 deficiency polyneuropathy may include a softened area in the brain, volume loss affecting various regions of the brain, and a lower brain weight. The symptoms of Vitamin B12 deficiency may include peripheral neuropathy, hypochromic microcytic anemia, and cystathionuria. It is important to note that Vitamin B12 is synthesized only by bacteria, and deficiencies can occur in individuals with poor absorption or limited dietary intake.