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. Author manuscript; available in PMC: 2023 Aug 3.
Published in final edited form as: Pract Neurol (Fort Wash Pa). 2023 Jul;2023:17–22.

Figure 1.

Figure 1.

Relating syndrome and neuropathology. There is not a one-to-one correspondence between a dementia syndrome and a neurodegenerative disease. The syndrome reflects neuroanatomy, not etiology. The concepts of clinical–anatomic convergence (A) and phenotypic diversity (B) are demonstrated with some examples. FTD, frontotemporal dementia; PPA, primary progressive aphasia.