Thoracic endometriosis: a case report and review of the literature - Chen, Cheng; Zhai, Kui; Tang, Yang; Qu, Wendong; Zuo, Jiebin; Ke, Xixian; Song, Yongxiang (Annals of Palliative Medicine; Vol 10, No 3 (March 31, 2021): Annals of Palliative Medicine, 2021)