Transbronchial cryobiopsy: an effective tool in the diagnosis of lymphoproliferative disorders of the lung

Rita Bianchi, Alessandra Dubini, Silvia Asioli, Claudia Ravaglia, Sara Tomassetti, Silvia Puglisi, Sara Piciucchi, Christian Gurioli, Carlo Gurioli, Roberto Fiocca, Venerino Poletti

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Introduction: Malignant lymphoproliferative disorders are rarely observed in the lung and, considering their clinical and radiological heterogeneity, diagnosis is often difficult and may require invasive methods. Transbronchial cryobiopsy has been confirmed as a new tool in the diagnosis of interstitial lung diseases, given its fewer risks and costs compared to surgical approach. This study is aimed at assessing the effectiveness of cryobiopsy in the diagnosis of lymphoproliferative disorders. Materials and methods: Among 970 consecutive cryobiopsies, performed between January 2011 and June 2018 at Morgagni Hospital of Forli, Italy, 13 cases of lymphoproliferative disorders were collected. Results: In 12 out of 13 cases a precise pathological diagnosis could be reached with the support of immunohistochemistry (IHC) and molecular ancillary studies. In the only case in which cryobiopsy did not lead to a definitive diagnosis, the subsequent surgical biopsy also did not help to clarify the diagnosis. Severe bleeding or pneumothorax did not occur in any case. On average, five biopsies were obtained per case, with a mean total area of 1161 mm(2), and only 5 out of 65 specimens were inadequate for diagnosis. Instant freezing did not produce tissue artefacts nor did it affect IHC and molecular tests. In all cases the amount of available tissue was sufficient for all ancillary studies. Conclusions: Transbronchial lung cryobiopsy is safe and effective for diagnosis in patients with suspected pulmonary involvement by lymphoproliferative disorders and it should therefore be considered a valid alternative to surgical biopsy in such cases.


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