Question of the Week

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Question :

Posted On : 31 Mar 2013

what is pencil sign in x-ray for stridor please show this finding

Expert Answer :

Answer Discussion :

D

drnirmala singh

0

layrngotracheobronchitis

12 years ago

J

jasim hashim

0

in croup

12 years ago

H

hoda sherif

0

croup

12 years ago

A

asma akther

0

croup

12 years ago

A

aisha ayad

0

narrow air column in the larynx

12 years ago

Answer 1

In acute laryngotracheobronchitis, there is a narrowing of trachea at subglottic region that results in normal air column above the narrowed subglottic region and hence resembles pencil and hence known as pencil sign - also known as steeple sign or hourglass sign. You may see picture of pencil sign in standard text book.

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