Study of ultrasound guided transthoracic fine needle aspirationand core needle biopsy in the diagnosis of peripheralpulmonary lesions

Abstract

Introduction: Transthoracic ultrasound has become important diagnostic tool in peripheral pulmonary lesions and transthoracic needle biopsy,under US guidance is relatively safe and easy procedure, may provide adequate tissue sampling for cytological or histopathological examination.Objectives: evaluate role of ultrasound guided transthoracic fine needle aspiration and core needle biopsy in diagnosis of peripheral pulmonary lesions. Patients & Methods: study was carried out at Chest and Radiodiagnosis&imaging department, Tanta University Hospitals It included 30 patients with undiagnosed peripheral parenchymal lesions. Ultrasound guided biopsy by fine needle aspiration with or without core needle biopsy were performed by free hand technique using needles of different pores and lengths for fine needle aspiration, spring loaded biopsy needles. Results: total diagnostic yield of transthoracic lung sampling (fine needle aspiration with or without core needle biopsy)80 %,The diagnostic yield of fine needle aspiration was 70 %, while of core needle biopsy 72.73 % and combined fine needle aspiration and core needle biopsy) 81.82%.The sensitivity of combined technique (both fine needle and core needle biopsy) (94.12%) was higher than sensitivity of fine needle alone(76%) and of core needle biopsy alone (88.24%). two main complications were pneumthorax (6.66%),hemorrhage(3.33%) Conclusions: Chest US guided biopsy is safe reliable fast procedure with low cost and low complications.conclusions:Ultrasound-assisted fine needle aspiration and core needle biopsy are complementary methods in diagnosing peripheral lung lesions.