Q.All are
true regarding HRCT finding except
a.the
crazy-paving pattern is specific of PAP
b.pleural
thickening and plaques seen in asbestosis
c.airspace
consolidation paralleling chest wall is seen in Chronic eosinophilc pneumonia
d.mosaic
attenuation pattern seen in OB
e.cystic
fibrosis shows central and upper lobe bronchiectasis
ANS .a
The crazy-paving
is not specific of PAP .
Q.All true
regarding colon except
a.in supione
postion , transverse and sigmoid colon usually contain greatest amount of gas
b.calibre of
colon varies from 3 to 6 cm
c.caecum has
the greatest diameter in colon
d.rupture of
sigmoid colon diverticula usually results in free intraperitonal air
e.persistent
caecal diameter of 9 to 10 cm or more indicate of risk of impending perforation
ANS.d
Rupture of
sigmoid colon diverticula usually results in development of retroperitoneal
gas because sigmoid diverticula are
frequently oriented toward the sigmoid mesentry .
The sigmoid
colon and transverse colon are intraperitoneal structures suspended by the
sigmoid mesentry and transverse mesocolon respectively .Ascending colon and
descending colon and rectum are fixed retroperitoneal structures .
On upright
abdominal radiograph ,air-fluid levels in the bowel are often interpreted as
sign of obstruction
