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Pleural cryobiopsy is useful for comprehensive cancer genetic panel testing
Satoru Ishii1, Hiromu Watanabe1, Shinyu Izumi1
1Department of Respiratory Medicine National Center for Global Health and Medicine Tokyo Japan.
Respirology Case Reports
|May 19, 2020
Summary
Cryobiopsy provides larger tissue samples than conventional forceps for diagnosing pleural effusion masses. This enables comprehensive cancer genetic panel testing, crucial for effective cancer treatment planning.
Area of Science:
- Pulmonology
- Oncology
- Medical Devices
Background:
- Pleural effusion diagnosis often requires tissue biopsy for accurate staging and genetic profiling.
- Conventional biopsy methods can yield insufficient tissue samples from solid masses, hindering comprehensive analysis.
Observation:
- A patient with pleural effusion underwent flex-rigid pleuroscopy revealing an anterior mass.
- Initial biopsy with conventional forceps yielded inadequate tissue.
- Subsequent cryobiopsy using a carbon dioxide-cooled probe successfully obtained larger tissue specimens.
Findings:
- Conventional biopsy yielded 2mm of tissue, insufficient for comprehensive cancer genetic panel (CGP) testing.
- Cryobiopsy yielded 5mm (5 sec) and 12mm (7 sec) specimens.
- Cryobiopsy specimens contained cancer cells and were sufficient for CGP testing.
Implications:
- Cryobiopsy is a promising technique for obtaining adequate tissue for molecular profiling in pleural effusion masses.
- Enhanced tissue acquisition via cryobiopsy can improve diagnostic yield and guide personalized cancer therapy.
- This technique may overcome limitations of conventional biopsy in challenging cases.
