{Reference Type}: Case Reports {Title}: Diagnostic and therapeutic challenges in a recurrent endometrial carcinoma in lung, 15 years after primary treatment. {Author}: Upadhyay AK;Kumar M;Prakash A;Kumar A; {Journal}: BMJ Case Rep {Volume}: 17 {Issue}: 5 {Year}: 2024 May 22 暂无{DOI}: 10.1136/bcr-2023-259008 {Abstract}: Endometrial carcinoma (EC) is the sixth most common cancer in females. Most ECs are detected in stage 1 and have a 5-year survival rate of more than 90%. Recurrence rates are highest within 5 years after treatment and are exceptionally rare after 10 years. Here, we describe a woman in her late 70s with endometrial cancer who was treated in 2008 and was diagnosed with a relapse in her left lung in 2023. Due to her advanced age and comorbidities, she was deemed inoperable. However, she received sequential chemotherapy and radiotherapy with a good partial response. She has now been started on hormonal therapy with an alternate megestrol and tamoxifen regime. There is a lack of follow-up imaging guidelines to detect late relapse, a dilemma in preferred treatment sequencing at relapse and an enigma in selecting chemotherapy or hormonal therapy.