article 2011 Extraluminal bowel obstruction by endometrioid adenocarcinoma 34 years post-hysterectomy: risks of unopposed oestrogen therapy Journal of the Royal Society of Medicine ·doi:10.1258/jrsm.2011.110057 This case highlights the risks of long-term unopposed oestrogen therapy after hysterectomy in a patient with a history of severe endometriosis.