<prompt> What is the most common serious serious complication of an end colostomy?BleedingSkin breakdownParastomal herniaStomal prolapse  <response>: .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 