GIT

Question 1

2 view by uss to appendix

Describe normal appendix

Answer 1

Longitudinal view

Axial view

Homogenous non inflammed fat
Thin walled
Normal lumen

Question 2

Acute appendicitis
Uss
Longitudinal view
Axial view

Answer 2

Longitudinal view : enlarged appendix , thick walled with hyperechoic thick fat

** check for stone
Hyperechoic mass with posterior acoustic shaddow “ calcified fecolith “

Axial view
“ Target sign “.

Question 3

Simple liver cyst on CT
Describe :

Answer 3

CT abdomen axial with IV contrast

Non enhanced well defined density of cystic mass of the liver

Question 4

Liver abscess
Uss :

CT:

Answer 4

Well defined hypoechoic mass with posterior acoustic enhancement & small bubbles

Single non enhanced hypodense hepatic mass with double target sign

Or - Single non enhanced hypodense mass with thick irregular wall

Question 5

CT axial abdomen with IV contrast
Multiple hypodense hepatic mass with cluster sign
Dx :

No cluster sign : Dx = multiple simple liver cysts

Answer 5

Multiple liver abscesses

Question 6

Multiple non communicating well defined anechoic masses
In liver by uss
Dx :

By CT describe :

Answer 6

Multiple simple hepatic cysts

CT abdomen axial with IV contrast
Multiple non enhanced hypodense density of cystic masses in the liver

Question 7

Liver metastasis by CT
Describe :

Answer 7

Multiple nonenhanced hypodense masses with irregular hepatic margin

Question 8

Metastasis of liver
Uss describe :
Dx : single metastasis usually from ……..

Answer 8

Bull’s eye or target sign
Bronchogenic carcinoma

Question 9

Ddxof multiple non enhanced lesions :

Answer 9

• cluster sign “ multiple abscesses” + fever
• multiple simple cysts ( well defined , same density with bile )
• liver metastasis “ irregular hepatic margin”

Question 10

Single anechoic hepatic lesion germinal membrane
Sx :

Answer 10

Hepatic hydatid cyst

Question 11

Hydatid cyst
- 76 % in
-………. is the second most common

Answer 11

In liver
Lung

Question 12

Single anechoic hepatic mass with lobulated daughters
Dx :

Answer 12

Hepatic Hydatid cyst

Question 13

Hepatic hydatid cyst
CT
Describe :

Answer 13

CT axial abdomen with IV contrast single large non enhanced hypodense mass with calcified wall & contains daughters“”!!!

Question 14

CT abdomen axial with IV contrast

Single mass with peripheral nodular enhancement in the RT lobe of the liver

Dx :
If start to be centrally enhanced & dot at periphery ; this phenomena called :

Answer 14

Hepatic hemangioma
Iris phenomena

Question 15

Focal nodular hyperplasia
Modality
Describe

Answer 15

MRI T2 axial abdomen with oral contrast
MRI T1 axial abdomen with IV contrast

Well defined mass in RT lobe of the liver with Central scar

Question 16

Liver cancer
modality :
Describe:

Answer 16

CT axial abdomen with IV contrast

Single large hepatic mass with mixed densities

Question 17

Fatty liver
CT describe:

Answer 17

CT axial abdomen with oral contrast “ no IV contrast “

Enlarged liver , “ part of liver has “ density of fat , enhanced vessels without contrast

Question 18

CT abdomen axial with IV contrast
Shrinked liver , spleenomegally, ascites , dilated serpiginous abdominal veins
Dx :

Answer 18

Liver cirrhoisis with abdominal varices

Question 19

Acute pancreatitis on CT
Mention the sign :

Uss :

Answer 19

Fat strand sign

Description : pancreatic swelling with fat strand

pancreatic swelling with peripancreatic fluid collection

Question 20

Colon cut off sign seen in :

Answer 20

Acute pancreatitis
Dilated stomach & transverse colon

“ Plain film X ray , child with mumps” = but it is not best modality

Question 21

Calcified leaking abdominal aortic aneurysm
CT scan
Describe :

Answer 21

CT abdomen axial with IV contrast
Filling defect “ thrombus “ , leaking , calcification

Question 22

Sign in gall bladder stone :

Answer 22

Posterior acoustic shadow

Question 23

Uss
Gall bladder stone
Describe :

Answer 23

Hyperechoic stone with posterior acoustic shadow with normal gall bladder wall !!!!

Question 24

Gallbladder uss
Hyperechoic stone with posterior acoustic shadow & thick gall bladder wall.
Dx :

Answer 24

Acute calcular cholecystitis

Question 25

Empyema by uss you can see …… sign

Answer 25

Fluid fluid sign

Uss
Multiple hyperechoic stones with post acoustic shadow , thick wall , empyema & fluid fluid level “ sign”
Dx: acute calcular cholecystitis

Question 26

Gall stones
90% :
10% :

Answer 26

90% : radiolucent appear only on USS
10% : radiopaque appear on X ray

Question 27

Radiological features of crohns disease

Answer 27

Skip lesions
Fissuring ulcers & muscosal thickening
Assymetrical loss of mucosa
Seperation of bowel loop from each other & contraction of the cecum