52 year old female who has has a total hysterectomy for uterine cancer followed by radiotherapy 1 year ago develops bowel obstruction, probably large bowel obstruction.
The causes could be:
1) Recurrence of her uterine cancer.
2) Adhesions from her radiotherapy.
3) Bowel obstruction due to disease unrelated to he previous cancer.
The nasal tube and intravenous drip is standard conservative management of a bowel obstruction before investigations.
A C-T scan or an MRI scan should offer a diagnosis, but not of 100% certainty and if they are not certain then a laparotomy (abdomen opened) and a biopsy would be taken.
No point in guessing the cause of the obstruction but if I was pushed, I would say that it was either 1) or 2) above.
That is all i can say with the data given.