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The Gastroenterology Training Handbook
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Gastritis and Gastropathy -
Radiation
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Written by Dr Sebastian Zeki
MCQs for this page
Radiation
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Histological Effects
At very low radiotherapy doses, gastric obstruction can occur months after
irradiation
with atrophic
mucosa and intestinal metaplasia seen in surviving animals.
Low single radiation doses cause stomach dilation and
gastroparesis,
with replacement of the normal
mucosa by hyperkeratinized squamous epithelium.
High-dose radiation can cause an erosive or ulcerative gastritis.
50% of all patients receiving
upper abdominal
irradiation
will
experience emesis within 2-3
wks of the start of treatment,
ending 1 wk after treatment has
finished
2-3wks
1 week
Chronic gastritis
Smoothened mucosal folds /atrophy
Evidence of antral stenosis, 1- 12
months after irradiation
Dyspepsia 6m to
4yrs after treatment
Late Complications
Early Complications
Radiation dose
The dose at which 5 % of patients
develop complications at 5 years is
50 Gy.
Radiation effects can be exace
-
bated by the concurrent adminis
-
tration of chemotherapy.
Radiation Gastritis
Ulceration, 5m after irradiation
Written by Dr Sebastian Zeki
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