A Case Report on Endometriosis-Associated Intestinal Tumour Following Hysterectomy: Diagnostic Challenges and Implications for Hormone Replacement Therapy (HRT) Guidelines.

Endometriosis is a complex condition that is often underdiagnosed, leaving rare but serious risks such as malignant transformation overlooked in many cases. Malignant transformation, especially in extra-gynaecological sites, poses significant diagnostic and therapeutic challenges. We present a case of an endometriosis-associated intestinal tumour diagnosed in a patient with exposure to oestrogen-only hormone replacement therapy (HRT) on a background of total abdominal hysterectomy and bilateral oophorectomy performed three decades before her presentation.