2017 Sec 1 Green Book

A.

Garin

et

al.

/ International

Journal

of Pediatric Otorhinolaryngology 79

(2015)

1752–1760

Fig. 2. CT and MR

sinus .

(A)

In this patient, only frontal or ethmoid

the

right

frontal

sinus was

infected

(black arrow) even

though

the SE was

imaging of

empyema not

in

contact with

the

infected

the opposite

side

(*).

(B1–B3) SE with no visible

continuity with

the

sinuses.

(C1–C2) Left

frontal

sinusitis and

right

frontal EE originated

from

located on

puffy

tumor.

Pott’s

strongly

support

the

responsibility

of

frontal

sinusitis

in

most

Radiology

considers

that

MRI

with

contrast

and

contrast- evaluating

of

CT

are

complementary

examinations when

cases:

enhanced

sinusitis

[18] . CT

scans are

less effective

potential complications of

detecting

empyema

and

in

distinguishing

SE

from

EE

as of

in

the mean age of our patients

(11 years

for SE and 10 years

for EE),

similar

to

those previously

reported

in

the

literature

to

MRI,

but

its

specificity

for

the

diagnosis

compared

which was

is

higher

and

it

better

shows

absent

sinuses

thrombophlebitis

corresponds

to

the

age

of

development

of

the

frontal

[3,4,14] ,

erosions of

sinus walls or

cranial vault. Concerning MRI,

and bony

sinus 82%

T1-weighted

sequences

are

particularly sequences,

gadolinium-enhanced

of

empyema

(8

SE

and

6

EE) were

at

least

partly

located

in

the

frontal

lobe and not

in

its basal part,

i.e.

they

in

distinguishing

EE

from

SE,

since thick

in

these

useful

the polar part of

dura

mater

clearly

appears

as

a

enhanced

layer.

The

the

the

frontal

and

not

the

ethmoid

sinus.

faced

is usually quite obvious

in

extended

forms

( Fig. 4 ), but

distinction

at

the

beginning

of

the

evolution

( Fig. 1 ):

SE

can be more difficult

cases

clearly

originated

from

the

ethmoidal

sinus

since

contours

are

rather

irregular,

following

the

form

of

inner

Two

patients

did

not

have

any

frontal

sinus.

In

one

case, from

the

EE

cerebral

gyri.

They

often

have

a multilocular

appear-

these

underlying

from

a Pott’s puffy

tumor

and not directly

a

sinus

frequently

spread way beyond

the

infected

sinus and are

originated

ance, are

( Fig. 2 ). With regards

partly

localized

in

the

interhemispheric

fissure.

cavity

often

to

imaging

techniques,

in the present work as well

trend noted was

the this

Concerning microbiological data, a striking

in other publications

[15] , CT

scans were more often prescribed

involvement streptococci

of

Indeed,

as

frequent

Streptococcus

anginosus.

(76.5% versus 41% of cases). This

is mostly due

to

the

fact also

of

has

long

been

recognized

to

cause

invasive

than MRI

group

they

are

easier

to

obtain

in

an

emergency

setting

and

infections

in

various

tissues

[19] .

In

pediatric

studies

of

that

pyogenic

to

perform

on

children.

However,

CT

scans

may

fail

in

complications

of

rhinosinusitis,

anginosus was

not

easier

intracranial

S.

the most

frequently

involved bacterium, but

it also

increased

only

intracranial complications

[16,17] . The American College

revealing

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