. Author manuscript; available in PMC: 2009 Feb 3.

Published in final edited form as: J Neuropathol Exp Neurol. 2008 Apr;67(4):271–279. doi: 10.1097/NEN.0b013e31816a12a6

TABLE 6.

Number of FTLD-U cases with hippocampal sclerosis and frequent CA1 dystrophic neurites in each frontal cortex pathology subtype

	Number of cases with hippocampal sclerosis (/total examined)
	Posterior hippocampus	Anterior hippocampus	Cases with frequent DN in CA1 (/total examined)
Unclassifiable	4/9	3/5	1/8
No frontal pathology	2/2	0/0	0/2
Type 1	3/13	2/7	0/13
Type 2	2/12	4/5	4/12
Type 3	5/27	8/13	21/26^***
Type 4	1/2	0/0	0/2

Total	17/69 (25%)	17/30 (57%)^**	26/61 (43%)

^**

p = 0.003 (posterior vs. anterior hippocampus); DN, dystrophic neuritis

^***

p=0.0007 (frequent CA1 DN in type 3 cases vs. other types)