D’Andrilli A., Venuta F., Rendina E. A. Surgical approaches for invasive tumors of the anterior mediastinum // Thorac. <...> Date H. Diagnostic strategies for mediastinal tumors and cysts // Thorac. <...> Graeber G. M., Tamim W. S. Current status of the diagnosis and treatment of thymoma // Thorac. <...> Whitten C. R., Khan S., Munneke G. J., Grubnic S. A diagnostic approach to mediastinal abnormalities // Radiographics. 2007. 3. <...> P. Chuvatova, E. S. Evdokimova, A. L. Akopov TRANSTHORACAL PUNCTURE BIOPSY UNDER ULTRASONIC INDUCTION IN TUMORS OF THE ANTERIOR MEDIASTINUM Pavlov State Medical University, Saint-Petersburg Differential diagnostics of tumors of anterior mediastinum is one of the most difficult problems of thoracic surgery and oncology. <...> The authors conducted a retrospective analysis of the results of transthoracal puncture biopsy under ultrasonic induction in 44 patients with the tumors of the anterior mediastinum. <...> Transthoracal biopsy was carried out using the device for biopsy (Multiple Biopsy Device-MBD-23) and ultrasonic scanner (Voluson 730 Expert), the patients being under intravenous (38 patients) and under local (6 patients) anesthetization. <...> The diagnosis was made as a result of morphological research in all 100% of patients, the biopsy being performed the second time in one patient. <...> The general information value of puncture biopsy under ultrasonic induction was 98%. <...> A complication (localized pneumothorax, cupping off by itself) took place only in one of the follow-up study (2%). <...> The analysis of presented material let the authors make a conclusion that transthoracal puncture biopsy under ultrasonic induction is a safe and highly informative method of diagnostics of tumors of the anterior mediastinum in selected patients. <...> Диагностика новообразовании средостения — одна из наиболее сложных проблем торакальной хирургии и онкологии [1. 10]. <...> Переднее средостение — типичная локализация тимомы, лимфомы, мезеихимальиых опухолей, метастазов первичных опухолей других локализации и др. [9, 11, 12]. <...>