Abstract:Objective To investigate the effects of pentoxifylline as an adjuvant therapy on hemorheological parameters and levels of inflammatory factors in patients with endometriosis.Methods This study recruited 96 patients with endometriosis treated at Northwest Women and Children's Hospital from February 2020 to February 2023. They were randomly divided into a control group and an experimental group, with 48 patients in each. The control group received treatment with ethinylestradiol and cyproterone acetate tablets, while the experimental group additionally received pentoxifylline in addition to the standard therapy. The differences between the two groups were compared in terms of hemorheological parameters, inflammatory factors, vascular endothelial function, levels of carbohydrate antigen 125 (CA-125), Pictorial Blood Assessment Chart (PBAC) scores, Cox Menstrual Symptom Scale (CMSS) scores, subjective pelvic symptom scores, adverse reactions (vaginal discomfort, hot flashes, gastrointestinal reactions, and chest pain), and recurrence rates.Results The differences in plasma viscosity, fibrinogen levels, and red blood cell aggregation index before and after treatment were higher in the experimental group than in the control group (P < 0.05). The differences in levels of tumor necrosis factor-α, interferon-γ, interleukin-2, and interleukin-1β before and after treatment were higher in the experimental group than in the control group (P < 0.05). The differences in levels of vascular endothelial growth factor, serum endothelin-1, and nitric oxide before and after treatment were higher in the experimental group than in the control group (P < 0.05). The differences in PBAC, CMSS, and subjective pelvic symptom scores before and after treatment were also higher in the experimental group than in the control group (P < 0.05). There was no significant difference in the overall incidence of adverse reactions and recurrence rates between the two groups (P > 0.05).Conclusion Pentoxifylline as an adjuvant therapy can effectively improve hemorheological parameters and levels of inflammatory factors, enhance vascular endothelial function, and alleviate menstrual blood loss and dysmenorrhea symptoms in patients with endometriosis. This study confirms both its safety and efficacy.