This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
What is the most common serious serious complication of an end colostomy? 
Select and explain. 
A. Bleeding, B. Skin breakdown, C. Parastomal hernia, D. Stomal prolapse
C: Parastomal hernia
Answer: C: Parastomal hernia 
Explanation: .COLOSTOMY- It is an aificial opening made in the colon to the exterior (skin) to dive faeces and flatus. Permanent colostomy is always end colostomy placed in left iliac fossa, 6 cm above and medial to the anterior superior iliac spine. Complications of colostomy- 1. Prolapse of mucosa (prolapse of distal loop mucosa is common) - commonest complication 2. Retraction 3. Necrosis 4. Stenosis 5. Herniation 6. Bleeding 7. Diarrhoea 8. Enteritis 9. Skin excoriation ref:SRB&;S manual of surgery,ed 3,pg no 844