Slide 28:
❗️Acute Hemorrhagic gastritis.
‼️ Hemorrhage and edema under the epithlial lining.
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Slide 29:
❗️Acute errosive gastritis.
‼️superficial small ulcers.
black spots due to extravasation and digestion of blood. .
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Slide 30:
❗️Acute erosive Gastritis.
‼️A superficial ulcer filled by a pulg of dead tissue and exudate.
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Slide 31:
❗️Chronic Gastritis.
‼️Intraepthelial neutrophils.
hyperplsia of lymphoid tissue (2ry Lymphoid follicles).
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Slide 32:
❗️Chronic Gastritis caused by H.Pylori.

‼️Infilteration of L.P by large No. of lymphocytes.
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Slide 33:
❗️Chronic active Gastritis (Due to H.Pylori).
‼️intraepithlial neutrophils.
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Slide 34:
❗️Chronic active gastritis caused by H.Pylori.
‼️ Coma-Shaped esionophilic figures (H.Pylori).
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Slide 35:
❗️Chronic autoimmune gastritis.
‼️lymphocyte infilteration without formation of follicles.
no neutropils.
intestinal metapalsia.
atrophy of musculosa.
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Slide 36:
❗️Benign Peptic Ulcer.
‼Area of necrosis.
Normal thickness.
clear base.
With inverted edges.

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Slide 37:
❗️Peptic Ulcer Disease (PUD).
‼️Four zones:
1- Necrotic Zone
2- area of Acute inflammation
3- granulation tissue
4- Area of Chronic inflammation and fibrosis.
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Slide 39:
❗️Menetrier Disease.
‼️*dialted gastric pits and glands.
*Hyperplasia of faveolar cells.
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Slide 38:
❗️Menetrier Disease (Hypertrophic gatrophathy).

‼️Giant Mucosal Folds.
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⭕ Diagnosis Intestinal metaplasia in the stomach
- may be caused by Autoimmune chronic gastritis

🔶 Feature: Presence of Goblet cells

⭕ Diagnosis: Polyps in the stomach (by endoscope)

🔶 Feature: Tiny, numerous sessile massess, maybe associated with bleeding

⭕ Diagnosis: Fundic gland polyposis (FGP)
-It is not a neoplasm

🔶 Feature: presence of hyperplastic mucus secreting glands, no dysplastic changes

-Short gastric pits with superficial and deep cystic pits (اضافة)

⭕ Diagnosis: Gastric hyperplastic polyposis

🔶 Feature:
الدكتور اعتبرها نفس ال FGP

- Dilated tortuos pits with inflamed edematous stroma (اضافة)

⭕ Adenoma (Adenomatous Polyp)_is a pre-cancerous state of tumor.
🔶
-Dysplastic changes of the glands:
1- Stratification of the lining epithelium.
2- nn. at different levels and are hyperchromtic.

⭕ Diagnosis: Malignant ulcer
🔶 Feature: Everted and thickened Edges surrounding the ulcer

⭕ Diagnosis: Gastric carcinoma (gross cut section)

🔶 Feature: thickening of the stomach wall in the pyloric part

⭕ Diagnosis: Gastric adenocarcinoma

🔶 Feature: Eosinophilic glands invading the musclaris propria (may also invade other layers and other abdominal organs)

⭕ Diagnosis: Diffuse gastric adenocarcinoma (Signet ring carcinoma)

🔶 Feature: Signet ring cells with abundant cytoplasm