title: Core-needle biopsy under CT fluoroscopy guidance and fine-needle aspiration cytology: Comparison of diagnostic yield in the diagnosis of lung and mediastinum tumors. Analysis of frequency and types of complications.
abstract: BACKGROUND
  Patients with pathological tissue mass in thoracic cage found with imaging require histopathological or cytological confirmation of malignancy before treatment. The tissue material essential for patomorphological evaluation can be acquired with fine-needle aspiration biopsies (FNAB) controlled with CT and core-needle biopsy (CNB) under real-time CT fluoroscopy guidance. The purpose of this work is to carry out a retrospective analysis of the two methods with regards to their informativity, frequency and the kind of complications.
  
  
  METHODS
  From January, 2012 to May 2013, 76 core-needle biopsies of lung and mediastinum tumors were conducted and compared with 86 fine-needle aspiration biopsies(FNAB) of lung and mediastinum tumors, including 30 patients who underwent FNAB and were referred to CNB in order to specify the diagnosis.
  
  
  RESULTS
  Complete histopathological diagnosis was made in 91% with the use of CNB and in 37% when FNAB was the chosen method. Early complications were observed in 32% patients who underwent BG and in group of 11% who underwent FNAB. Late complications, however, appeared in 29% patients after CNB and 13% after FNAB. In 24 cases CNB specified the complete diagnosis.
  
  
  CONCLUSIONS
  Core-needle biopsy in comparison to fine-needle aspiration biopsy has more frequent rate of negligible complications, however, it offers higher diagnostic yield for diagnostic of lung and mediastinum neoplastic disease and allows for more precise diagnosis of focal lesions.
authors.affiliation: Department of Diagnostic Imaging and Interventional Radiology, Franciszek Łukaszczyk Oncology Center, Bydgoszcz, Poland.
authors.forename: Przemysław
authors.initials: P
authors.lastname: Szlęzak
authors.affiliation: Department of Tumor Pathology and Pathomorphology, Franciszek Łukaszczyk Oncology Center, Bydgoszcz, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Srutek
authors.affiliation: Department of Diagnostic Imaging and Interventional Radiology, Franciszek Łukaszczyk Oncology Center, Bydgoszcz, Poland ; Department of Radiology of Medical University of Gdańsk, Gdańsk, Poland.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Gorycki
authors.affiliation: Department of Thoracic Surgery and Tumors, Franciszek Łukaszczyk Oncology Centre, Bydgoszcz, Poland.
authors.forename: Janusz
authors.initials: J
authors.lastname: Kowalewski
authors.affiliation: Department of Diagnostic Imaging and Interventional Radiology, Franciszek Łukaszczyk Oncology Center, Bydgoszcz, Poland ; Department of Radiology of Medical University of Gdańsk, Gdańsk, Poland.
authors.forename: Michał
authors.initials: M
authors.lastname: Studniarek
keywords: CT Fluoroscopy; Core-Needle Biopsy; Fine-Needle Aspiration Biopsy