CLINICAL IMAGAGING AN ATLAS OF DIFFERENTIAL DAIGNOSIS EISENBERG

1. 33Filling Defects in the Cecum

2. CLINICAL IMAGAGING
AN ATLAS OF DIFFERENTIAL DAIGNOSIS
EISENBERG
DR. Muhammad Bin Zulfiqar
PGR-FCPS III SIMS/SHL

3. • Fig GI 33-1 Periappendiceal abscess. There is
fixation and a mass effect at the base of the
cecum with no filling of the appendix.

4. • Fig GI 33-2 Periappendiceal abscess. Severe
inflammatory mucosal changes and a mass
effect on the lateral aspect of the ascending
colon (arrows) in a patient with a ruptured
retrocecal appendix.

5. • Fig GI 33-3 Inverted appendiceal stump. In this
example, the mass (arrows) is large and
irregular, simulating a neoplasm at the base of
the cecum.

6. • Fig GI 33-4 Mucocele of the appendix.
Smooth, broad-based filling defect (arrow)
indents the lower medial part of the cecum.
There is no filling of the appendix with
barium.

7. • Fig GI 33-5 Intussusception of the appendix
(arrow). After reduction, the cecum and
appendix appeared normal on another barium
enema examination.

8. • Fig GI 33-6 Adenocarcinoma of the appendix.
The extensive tumor produces a large mass
(arrows) that mimics an intraluminal cecal
neoplasm.

9. • Fig GI 33-7 Carcinoma of the pancreas
metastatic to the cecum. There is a localized
extrinsic pressure defect (arrows) on the
medial and inferior aspects of the cecum and
no filling of the appendix.

10. • Fig GI 33-8 Solitary benign ulcer of the cecum.
Lobular soft-tissue mass centered at the
ileocecal valve (arrows) with a central irregular
barium collection representing ulceration.42

11. • Fig GI 33-9 Adherent fecalith (arrows) in cystic
fibrosis.

12. • Fig GI 33-10 Burkitt's lymphoma. A huge mass
fills essentially the entire cecum.10