Details

Autor(en) / Beteiligte

• Pourabdollah, Mihan
• Shamaei, Masoud
• Karimi, Shirin
• Karimi, Mahdi
• Kiani, Arda
• Jabbari, Hamid Reza

Titel

Transbronchial lung biopsy: the pathologist's point of view

Ist Teil von

• The clinical respiratory journal, 2016-03, Vol.10 (2), p.211-216

Ort / Verlag

England: Blackwell Publishing Ltd

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• Background and Aims The efficacy of flexible cryoprobe in providing high‐quality tissue specimens through bronchoscopy for making a diagnosis remains debatable. In this study, we have compared the diagnostic yield of cryoprobe with conventional sampling by forceps. Methods Forty‐one patients scheduled to undergo transbronchial lung biopsy (TBLB) in a pulmonary hospital in Tehran, Iran. Each patient underwent conventional TBLB and flexible cryoprobe TBLB (FCLB) sequentially. Specimen adequacy was defined by the presence of at least 50 alveolar spaces or a positive diagnostic yield. Adequacy of specimens, number and percentage of alveolar spaces without artifact, type of artifact, presence of bronchiolar structures and the diagnosis made based on the results of the two methods separately were compared. Results The mean values of tissue section area obtained by forceps and cryoprobe were 6 mm2 [standard deviation (SD) ± 6.7] and 22 mm2 (SD ± 19.1), respectively (P < 0.001). Specimens were adequate in 26 cases of conventional TBLB and 40 cases of FCLB (P < 0.001). Of adequate specimens, 14 samples obtained by TBLB and 28 samples obtained via FCLB were diagnostic. A significant difference was also detected between diagnostic and non‐diagnostic specimens (P = 0.04). Frequency of specimens with >75% artifact‐free lung parenchyma was significantly higher in FCLB method. Conclusion FCLB method provides larger tissue samples with better quality compared with TBLB. Higher‐quality specimens are associated with less artifact and higher diagnostic yield. Multisite randomized trials are required to improve our knowledge about the benefits and indications of TBLB with cryoprobe.