Gastroenterology
Embryology
Foregut (Oesophagus - Prox 1/4 duodenum)
Mid gut (3/4 duodenum - prox 2/3 transverse colon)
End gut (1/3 transverse colon - rectum)
Radiology
Investigations
Source
AMC handbook of MCQ
- Only ileum can absorb B12 and bile acids
- Causes of abdo distention (6Fs)
- Fat
- Foetus
- Flatus
- Faecal
- Fluid
- Fatal growth
- inc eosinophil ~ allergy/ parasite
- Oesophageal web = partial occulsion = upper oesophagus
- Oesophageal ring = complete occulsion = lower oesophagus
- Most common oesophagitis cause: Candida, 2nd = Herpes
- Gastritis causes: 1. EtOH, 2. NSAIDs, 3. H Pylori
- Most common perforations are anterior gastric ulcers
- H Pylori Ix: Urea breath test, histology
- Constipation causes:
- Drugs
- Obstruction
- Pain
- Endocrine dysfunction
- Depression
- Meckel's Diverticulum (Rule of 2s)
- 2% of population
- 2yo
- 2:1 M>F
- 2cm from ileocaecal valve
- 2 inches long
- 2 types of ectopic tissue
- Coeliac disease --> proximal jejunal lymphoma
- Bovine cough + fasciculations = bulbar palsy (CN Ix- XII)
- Kussmal's sign = paradoxical inc in venous pressure on inspiration
Embryology
Foregut (Oesophagus - Prox 1/4 duodenum)
- T5-T9 dermatome (referred epigastric pain)
Mid gut (3/4 duodenum - prox 2/3 transverse colon)
- T10-T11 dermatome (referred umbilical pain)
End gut (1/3 transverse colon - rectum)
- T12-L1 dermatome (referred suprapubic pain)
Radiology
- Oesophageal spasm --> corkscrew oesophagus
Investigations
- Antimitochondral ab --> 1o biliary cirrhosis
Source
AMC handbook of MCQ