Patient with widespread ovarian carcinoma has bowel obstruction and severe colic for 2 hours and was normal in between severe pain for a few hours. What is the most appropriate management?

The key is C. Palliative colostomy. [Cancer or chemotherapy induced obstructions are unlikely to respond to conservative management (NBM, IV fluid, nasogastric suction) and hence only analgesia will not relieve it. So in such cases we have to go for palliative colostomy].