PMID- 30882147 OWN - NLM STAT- MEDLINE DCOM- 20190716 LR - 20201218 IS - 1465-3621 (Electronic) IS - 0368-2811 (Linking) VI - 49 IP - 6 DP - 2019 Jun 1 TI - Cryobiopsy during flex-rigid pleuroscopy: an emerging alternative biopsy method in malignant pleural mesothelioma. A comparative study of pathology. PG - 559-566 LID - 10.1093/jjco/hyz032 [doi] AB - BACKGROUND: Malignant pleural mesothelioma (MPM) is rarely an asbestos-related cancer with a poor prognosis that is difficult to distinguish from some benign conditions by using conventional biopsy techniques. The purpose of this study was to evaluate the utility of a novel biopsy technique using a cryoprobe during flex-rigid pleuroscopy for diagnosing MPM. METHODS: Consecutive patients who underwent pleural cryobiopsy during flex-rigid pleuroscopy from June through November 2017 to diagnose the cause of pleural effusion were collected. From these, cases ultimately diagnosed as MPM were selected. Pleural biopsies were performed by using conventional instruments followed by a cryoprobe. The obtained samples were histologically examined and compared with regard to the quality (sample size, tissue depth, and crush rate), immunohistochemical (IHC) staining, and p16 by fluorescence in situ hybridization (FISH). RESULTS: In total, five patients ultimately diagnosed as MPM were enrolled. The sample collected was significantly larger for cryobiopsy than conventional biopsy (18.9 mm2 vs. 6.7 mm2, P < 0.001). Full-thickness biopsies were achieved in four cases by using cryobiopsy compared with one case by conventional biopsy. Moreover, the crush rate was significantly less for cryobiopsy than conventional biopsy (9% vs. 35%, P < 0.001). The results of IHC staining and p16 by FISH were similar between biopsy techniques. Cryobiopsy successfully led to accurate diagnosis of MPM in all cases, whereas conventional biopsy was diagnostic in one case. No severe complications developed after either biopsy technique. CONCLUSION: Cryobiopsy during flex-rigid pleuroscopy is a feasible and convenient biopsy technique that supports precise diagnosis of MPM. CI - (c) The Author(s) 2019. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Nakai, Toshiyuki AU - Nakai T AD - Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, 5-1-1, Tsukiji Chou-ku, Tokyo, Japan. FAU - Matsumoto, Yuji AU - Matsumoto Y AD - Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, 5-1-1, Tsukiji Chou-ku, Tokyo, Japan. AD - Department of Thoracic Oncology, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, Japan. FAU - Sasada, Shinji AU - Sasada S AD - Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, 5-1-1, Tsukiji Chou-ku, Tokyo, Japan. AD - Department of Respiratory Medicine, Tokyo Saiseikai Central Hospital, 1-4-17 Mita, Minato-ku, Tokyo, Japan. FAU - Tanaka, Midori AU - Tanaka M AD - Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, 5-1-1, Tsukiji Chou-ku, Tokyo, Japan. FAU - Tsuchida, Takaaki AU - Tsuchida T AD - Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, 5-1-1, Tsukiji Chou-ku, Tokyo, Japan. FAU - Ohe, Yuichiro AU - Ohe Y AD - Department of Thoracic Oncology, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, Japan. FAU - Motoi, Noriko AU - Motoi N AD - Department of Pathology and Clinical Laboratories, Pathology Division, National Cancer Center Hospital, 5-1-1, Tsukiji Chou-ku, Tokyo, Japan. LA - eng PT - Journal Article PL - England TA - Jpn J Clin Oncol JT - Japanese journal of clinical oncology JID - 0313225 SB - IM MH - Aged MH - Biopsy/instrumentation/methods MH - Female MH - Humans MH - Lung Neoplasms/*diagnosis MH - Male MH - Mesothelioma/*diagnosis MH - Mesothelioma, Malignant MH - Middle Aged MH - Pleural Neoplasms/*diagnosis MH - Thoracoscopy/*instrumentation/*methods OTO - NOTNLM OT - Malignant pleural mesothelioma OT - cryobiopsy OT - flex-rigid pleuroscopy OT - full-thickness pleural biopsy EDAT- 2019/03/19 06:00 MHDA- 2019/07/17 06:00 CRDT- 2019/03/19 06:00 PHST- 2018/05/03 00:00 [received] PHST- 2018/12/12 00:00 [revised] PHST- 2019/02/22 00:00 [accepted] PHST- 2019/03/19 06:00 [pubmed] PHST- 2019/07/17 06:00 [medline] PHST- 2019/03/19 06:00 [entrez] AID - 5382377 [pii] AID - 10.1093/jjco/hyz032 [doi] PST - ppublish SO - Jpn J Clin Oncol. 2019 Jun 1;49(6):559-566. doi: 10.1093/jjco/hyz032.