Brain abscess in cyanotic heart disease
is commonly located in
a) Cerebellar hemisphere
b) Thalamus
c) Temporal lobe
d) Parietal lobe
Correct Answer - D
Ans. is ‘d’ i.e. Parietal lobe
Brain abscesses in congenital cyanotic heart diseases occur due to
hematogenous seeding of bloodborne bacteria. These blood borne
bacteria bypass the pulmonary capillary bed d/t right to left shunt.
They commonly infect parietal & frontal lobes (territory of middle
cerebral artery).
Location of Brain Abscesses
Etiology Location
Otitis media,
mastoiditis Temporal lobe > Cerebellum
Paranasal sinusitis,
dental inf. Frontal lobes
Hematogenous Parietal lobe, post-frontal lobes
(MCA territory)