Signs of Pneumoperitoneum On Plain Film
Signs of Pneumoperitoneum On Plain Film
Signs of Pneumoperitoneum On Plain Film
Pneumoperitoneum
free air within the peritoneal cavity
The most common cause is a perforation of
the abdominal viscus
most commonly, a perforated ulcer
Soto JA, Lucey BC. (2009). Emergency Radiology: The
Requisites. Pg 305
Khan AN. (2014). Pneumoperitoneum Imaging. Medscape.
Supine; RUQ/Liver
sign 1
Linear shape
ed
r
a
p
l
a
m
o
m
C
or
n
with ensity
d
t
a
f
Ind
Ind
Ind
4) Riglers Sign
Supine
Bowel wall outlined
by intraluminal &
extraluminal air
(extraluminal =
free peritoneal gas)
Both sides of bowel
wall can be seen
(red arrows)
Ind
massively air-filled
peritoneum
Ind
Dome-like
Air accumulation
beneath the
central tendon of
the diaphragm
Ind
Ind
small triangles of
free gas positioned
between the large
bowel and the
flank
Ind
Ind
14) Pneumoretroperitoneum
Air seen
surrounding the
lateral border of
the kidney
(retroperitoneal
organs)
If the gas is seen to
move in an erect
and decubitus
view, it's NOT in
the
retroperitoneum
Ind
Ind
Ind
http://dx.doi.org/10.1148/radiology.151.1.
Ind
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Air under
hemidiaphragm
and diaphragmatic
muscle slips visible
Ind
Picture: DOI:
10.1056/NEJMicm0904627
More Signs:
Ind
References
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