Comparison of Forceps, Cryoprobe, and Thoracoscopic Lung Biopsy for the Diagnosis of Interstitial Lung Disease - The CHILL Study

Momen M. Wahidi*, Angela Christine Argento, Kamran Mahmood, Scott L. Shofer, Coral Giovacchini, Aaron Pulsipher, Matthew Hartwig, Betty Tong, John M. Carney, Thomas Colby, Ben Neely, Xiaofei Wang, Jane Dematte, Neil Ninan, Sonye Danoff, Lake Daniel Morrison, Lonny Yarmus

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Rationale: Transbronchial lung cryobiopsy (TBLC) has emerged as a less invasive method to obtain a tissue diagnosis in patients with interstitial lung disease (ILD). The diagnostic yield of TBLC compared to surgical lung biopsy (SLB) remains uncertain. Objectives: The aim of this study was to determine the diagnostic accuracy of forceps transbronchial lung biopsy (TBLB) and TBLC compared to SLB when making the final diagnosis based on multidisciplinary discussion (MDD). Methods: Patients enrolled in the study underwent sequential TBLB and TBLC followed immediately by SLB. De-identified cases, with blinding of the biopsy method, were reviewed by a blinded pathologist and then discussed at a multidisciplinary conference. Main Results: Between August 2013 and October 2017, we enrolled 16 patients. The raw agreement between TBLC and SLB for the MDD final diagnosis was 68.75% with a Cohen's kappa of 0.6 (95% CI 0.39, 0.81). Raw agreement and Cohen's kappa of TBLB versus TBLC and TBLB versus SLB for the MDD final diagnosis were much lower (50%, 0.21 [95% CI 0, 0.42] and 18.75%, 0.08 [95% CI -0.03, 0.19], respectively). TBLC was associated with mild bleeding (grade 1 bleeding requiring suction to clear) in 56.2% of patients. Conclusions: In patients with ILD who have an uncertain type based on clinical and radiographic data and require tissue sampling to obtain a specific diagnosis, TBLC showed moderate correlation with SLB when making the diagnosis with MDD guidance. TBLB showed poor concordance with both TBLC and SLB MDD diagnoses.

Original languageEnglish (US)
Pages (from-to)394-400
Number of pages7
Issue number4
StatePublished - Apr 1 2022


  • Cryobioposy
  • Forceps transbronchial lung biopsy
  • Interstitial lung disease
  • Surgical lung biopsy
  • Transbronchial lung cryobiopsy

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine


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