Simultaneous involvement of the gastric antrum and duodenal bulb can occur due to several conditions including gastric lymphoma, gastric carcinoma, Crohn's disease, and eosinophilic gastroenteritis. The document describes each condition and includes images showing large lymphomatous masses, rigid abnormal folds, loss of anatomic landmarks, and irregular fold thickening extending from the antrum to the duodenal bulb.

1. 16Simultaneous Involvement of
the Gastric Antrum and Duodenal
Bulb

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

3. • Fig GI 16-1 Gastric lymphoma. There are large
lymphomatous masses in the distal stomach
and duodenal bulb with irregular ulceration.

4. Fig GI 16-2 Gastric carcinoma. Rigid, abnormal folds in the distal
stomach extend to involve the base of the duodenal bulb.

5. • Fig GI 16-3 Crohn's disease (pseudo-Billroth-I
pattern). There are no recognizable anatomic
landmarks between the antrum and the
second portion of the duodenum.

6. • Fig GI 16-4 Eosinophilic gastroenteritis.
Irregular fold thickening involves the antrum
and proximal duodenum.