Pathological heterogeneity of the precentral gyrus in Pick's disease: a study of 16 autopsy cases.
This report concerns the upper motor neuron involvement in 16 autopsy cases of Pick disease with Pick bodies, including 11 cases reported by us previously. Prominent, circumscribed atrophy of the precentral gyrus, conspicuously in the lower portion, was noted in one case. Loss of Betz cells and astrocytosis of the precentral gyrus layer V were encountered in 15 cases (94%) and eight cases (50%), respectively. Appearance of Pick bodies and ballooned neurons in the precentral gyrus layer V was confirmed in seven cases (44%). Degeneration of the pyramidal tract in the medulla oblongata was noted in all 15 cases in which this structure was examined. Pyramidal signs were observed in four (67%) of the six cases that were neurologically sufficiently examined: hyperreflexia in four cases (67%), spasticity in one case (17%). Babinski sign was not encountered in any of the six cases. In all four cases having pyramidal signs, degeneration of the pyramidal tract was observed. In contrast, two cases having degeneration of the pyramidal tract did not develop pyramidal signs. In Pick's disease with Pick bodies, obvious involvement of the precentral gyrus and pyramidal tract was not previously noticed. Furthermore, we suggest that pyramidal signs in Pick's disease with Pick bodies have been underestimated.
Tsuchiya
Kuniaki
K
Department of Laboratory Medicine and Pathology, Tokyo Metropolitan Matsuzawa Hospital, 2-1-1, Kamikitazawa, Setagaya-ku, 156-0057, Tokyo, Japan. ktsuchi@jcom.home.ne.jp
Piao
Yue-Shan
YS
Oda
Tatsuro
T
Mochizuki
Akihide
A
Arima
Kunimasa
K
Hasegawa
Kazuko
K
Haga
Chie
C
Kakita
Akiyoshi
A
Hori
Koji
K
Tominaga
Itaru
I
Yagishita
Saburo
S
Akiyama
Haruhiko
H
Takahashi
Hitoshi
H
D000368:Aged; D001344:Autopsy; D001921:Brain / Q000473:pathology*; D005260:Female; D005911:Gliosis / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D009046:Motor Neurons / Q000473:pathology; D009410:Nerve Degeneration / Q000473:pathology; D020774:Pick Disease of the Brain / Q000473:pathology* / Q000503:physiopathology*; D011712:Pyramidal Tracts / Q000473:pathology*