2017 Sec 1 Green Book

A.

Garin

et al.

/ International

Journal

of Pediatric Otorhinolaryngology 79

(2015)

1752–1760

Fig.

3.

CT

scans

showing

an

erosion

of

the

ethmoidal

roof

((A)

SE,

(B)

EE)

or

of

the

posterior wall

of

the

frontal

bone

(*)

((C)

EE).

Fig. 4. Cerebral

(*). These

images show

that SE

is usually biconvex

larger

than EE,

reaches areas situated way above

the ethmoid and

imaging at

the time of maximal extension of empyema

sinuses

and,

also

often

extends

to

the

interhemispheric

region. While

EE

shows

typical

contours,

SE

has

a more

irregular

shape,

sometimes

displaying

a

frontal

appearance

(A3,

A4,

A5, A6,

A7,

and

A9).

multilocular

89