IntroductionLupus anticoagulant (LA) is an autoimmune disorder characterized by the presence of circulating antiphospholipid antibodies that interfere with the normal clotting process12,. It is associated with an increased risk of abnormal blood clot formation, leading to complications such as venous thromboembolism and pregnancy-related complications3. One of the laboratory findings commonly observed in individuals with lupus anticoagulant is a prolonged activated partial thromboplastin time (aPTT), which reflects the impairment of the intrinsic pathway of the clotting cascade4-6.Tonsillectomy is a surgical procedure commonly performed in pediatric patients to remove the tonsils due to recurrent infections, airway obstruction, or other specific indications. Surgical procedures in individuals with underlying coagulation disorders, including those with lupus anticoagulant-induced prolonged aPTT, present a challenge due to the potential risk of bleeding. The impact of lupus anticoagulant-induced prolonged aPTT on bleeding risk in tonsillectomy patients has not been extensively studied, particularly in pediatric populations. Understanding the bleeding risk associated with tonsillectomy in these patients is crucial for guiding clinical decision-making, optimizing surgical management, and ensuring patient safety.In this case study, we present the clinical course of a 4-year and10-month-old female patient with lupus anticoagulant-induced prolonged aPTT who underwent tonsillectomy. The objective of this study is to evaluate the bleeding risk in such patients and assess their postoperative recovery. By examining this specific case, we aim to contribute to the limited existing knowledge on the safety and outcomes of tonsillectomy in individuals with lupus anticoagulant-induced prolonged aPTT.