Thanks for your question on Health Care Magic.
I can understand your concern.
Yes, radiotherapy is advisable after surgery for uterine malignancy.
During surgery, spillage of malignant cells is unavoidable. Spillage is common due to handling of tumour mass. So tumour cells are likely to present at the site of operation.
And hence local site recurrence is common after tumour surgery.
To avoid this recurrence, radiotherapy is given post operatively.
Radiotherapy will kill the tumour cells at local site. And hence recurrence can be prevented.
So it is always advisable to give post operatively
chemotherapy to prevent local site recurrence.
Hope I have solved your query.
I will be happy to help you further.
Wishing good health to your mother. Thanks.