MSLN and endometriosis: Mesothelin (MSLN) is a glycoprotein that is overexpressed in malignant pleural mesothelioma and in patients with EMT.[2] Drospirenone and ethinylestradiol tablets are commonly used Western medicine treatments for endometriosis; they can alleviate symptoms of dysmenorrhea and reduce lesion size, but their overall efficacy is limited.[3] The operation is an invasive operation, and the cost is high, and the patient ‘s acceptance is poor.