Pathology of Upper GI Tract Flashcards

1
Q

what are symptoms commonly associated with diseases of the upper GI tract

A

Diseases of upper GI tract which cause upper abdominal or retrosternal discomfort or pain or “indigestion”

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2
Q

what are five pathologies of the upper GI tract

A

Oesophageal reflux
Oesophageal cancer
Gastritis
Peptic ulceration
Gastric cancer

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3
Q

what pathologies are associated with oesophageal reflux

A

Reflux of gastric acid into oesophagus
Hiatus hernia

Thickening of squamous epithelium

Ulceration of oesophageal epithelium when severe reflux

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4
Q

are the squamous cells of the oesophagous keratinised or non keratinised

A

non keratinised

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5
Q

what are complications of oesophageal reflux

A

Healing by fibrosis

Barrett’s oesophagus

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6
Q

what are the issues of healing by fibrosis in the oesophagous

A

Stricture formation

Impaired oesophageal motility

Oesophageal obstruction

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7
Q

Barrets oesophagus

A

the cells of the lining can become abnormal [squamous epithelium turns to glandular epithelium] and there’s a small risk of cancer developing.

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8
Q

is barrets oesophagus a pre malignent condition

A

yes

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9
Q

is osophageal cancer a common type of cancer

A

third most common

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10
Q

what are the two histological types of osophageal cancer

A

squamous carcinoma

adenocarcinoma [develops from barretts oesophagous]

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11
Q

what are ridk factors for squamous carcinoma osophageal cancer

A

Smoking
Alcohol
Dietary carcinogens

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12
Q

what are ridk factors for adenocarcinoma osophageal cancer

A

Barrett’s metaplasia
Obesity

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13
Q

what are the local effects of oesophageal cancer

A

Obstruction
Ulceration
Perforation

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14
Q

how can osophageal cancer spread

A

directly
lymphatically
blood spread

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15
Q

what is the prognosis of osophageal cancer

A

Very poor
5 year survival rate less than 15%

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16
Q

what are the pathologies of gastritis

A

Autoimmune (type A)
Bacterial (type B)
Chemical injury (type C)

17
Q

autoimmune gastritis

A

Organ-specific autoimmune disease

Autoantibodies to parietal cells and intrinsic factor

Associated with other autoimmune diseases

18
Q

what pathologies are associated with autimmune gastritis

A

Atrophy of specialised acid secreting gastric epithelium

Loss of specialised gastric epithelial cells

19
Q

what effect does Loss of specialised gastric epithelial cells

A

Decreased acid secretion
Loss of intrinsic factor
Vitamin B12 deficiency (pernicious anaemia)

20
Q

bacterial gastritis

A

Commonest type of gastritis
Helicobacter pylori related

21
Q

Helicobacter pylori

A

Gram negative bacterium
Found in gastric mucus on surface of gastric epithelium
Produces acute and chronic inflammatory response
Increased acid production

22
Q

chemical gastritis cause

A

Drugs
Non-steroidal anti-inflammatory drugs (NSAIDs) cause
Alcohol
Bile reflux

23
Q

peptic ulceration

A

Imbalance between acid secretion and mucosal barrier

24
Q

what does peptic ulceration efect

A

Lower oesophagus
Body and antrum of stomach
First and second parts of duodenum

25
Q

what is peptic ulceration most commonly associated with

A

H. pylori associated
Increased gastric acid

26
Q

what are complications of peptic ulceration

A

Bleeding
Acute = haemorrhage
Chronic = anaemia

Perforation
Peritonitis

Healing by fibrosis
Obstruction

27
Q

is gastric cancer common

A

Second commonest cancer of alimentary tract

28
Q

how does gastric cancer develop

A

through phases of intestinal metaplasia and dysplasia

29
Q

what is gastric cancer associated with

A

previous H.pylori infection

30
Q

histologicallt what would you find with gastric cancer

A

adenocarcinoma

31
Q

prognosis of stomach cancer

A

Very poor
5 year survival rate less than 20%

32
Q

how can stomach cancer spread

A

Direct
Spread to surrounding tissues

Lymphatic
Spread to regional lymph nodes

Blood spread
Liver

Transcoelomic spread
Spread within peritoneal cavity