| Tests and Investigations |
| Gastric Investigation |
| Gastric intubation for smear |
| Gastric saline load test |
| Gastric analysis test |
| Gastric analysis test |
| Anal pressure record |
| Outpatient (Day Case) Surgery |
| Proctosigmoidoscopy |
| Proctosigmoidoscopy with biopsy |
| Sigmoidoscopy |
| Surgical colonoscopy |
| Diagnostic colonoscopy |
| Colonoscopy |
| Colonoscopy and biopsy |
| Colonoscopy, control bleeding |
| Colonoscopy, lesion removal |
| Incision of external haemorrhoid |
| Ligation of haemorrhoids |
| Removal of anal tabs |
| Removal of haemorrhoid clot |
| Injection into haemorrhoid |
| Diagnostic anoscopy |
| Anoscopy and dilation |
| Anoscopy, control bleeding |
| Destruction of anal lesion(s) |
| Destruction of haemorrhoids |