Electrocautery Resection Combined With HITHOC for Thymic Epithelial Tumors With Pleural Metastasis

Inclusion Criteria: * Pathologically confirmed thymic epithelial tumor (TET) * Imaging evidence of thymic epithelial tumor with pleural dissemination or recurrence, deemed suitable for HITHOC by multidisciplinary thoracic team * Age ≥16 years and ≤80 years * American Society of Anesthesiologists (ASA) physical status classification I-II * Normal major organ function * No history of other malignancies * Prior chemotherapy completed \>4 weeks, radiotherapy \>6 weeks, immunotherapy \>6 weeks before enrollment * No allergy to cisplatin or doxorubicin * Able to understand the study content and provide informed consent Exclusion Criteria: * Evidence of extrathoracic metastasis on imaging or pathological examination * Myasthenia gravis in unstable phase or acute exacerbation * Severe systemic comorbidities, such as active infection, poorly controlled diabetes, coagulopathy, bleeding tendency, or ongoing thrombolytic/anticoagulation therapy * Positive serum pregnancy test or lactation (females) * History of organ transplantation (including autologous bone marrow transplantation and peripheral blood stem cell transplantation) * History of peripheral nervous system disease, significant psychiatric disorder, or central nervous system disease * Currently participating in other clinical trials