PMID- 28429425 OWN - NLM STAT- MEDLINE DCOM- 20180315 LR - 20180315 IS - 1097-0339 (Electronic) IS - 1097-0339 (Linking) VI - 45 IP - 7 DP - 2017 Jul TI - Accuracy of cytology in sub typing non small cell lung carcinomas. PG - 598-603 LID - 10.1002/dc.23730 [doi] AB - BACKGROUND: Sub typing of non small cell lung carcinoma (NSCLC) has an important task in the era of molecular and targeted therapies. Differentiating between squamous cell carcinoma (SQCC) and adenocarcinoma (ADC) is challenging when limited material is available in lung carcinoma. We investigated the accuracy and feasibility of sub typing NSCLCs in cytology and small biopsy material. METHODS: Concurrent cytology and biopsy material obtained in a single CT- guided procedure in lung carcinoma over a year period retrospectively. Both materials were individually sub typed and analyzed. Immunohistochemistry (IHC) was performed. Accuracy was determined by comparing the results with IHC. RESULTS: Total 107 of 126 cases of NSCLCs were included for analysis, where both cytology and biopsy material were adequate for interpretation. FNAC allowed tumor typing in 83 (77.6%) cases; 36 (33.6%) were ADC, 47 (43.9%) cases were SQCC and 24 (22.4%) cases diagnosed as Non-small cell carcinoma not otherwise specified (NSCLC-NOS). In biopsy, 86 cases (80.4%) were typed, among which 34 (31.8%) were ADC, 52 (48.6%) were SQCC and 21 (19.6%) were of NSCLC-NOS type. The result of Chi-square index was significant. With the aid of IHC, NSCLC-NOS reduced from 14 (13%) cases to 2 (1.9%) cases. CONCLUSION: Cytology and small biopsy specimens achieved comparable specificity and accuracy in sub-typing NSCLC and optimal results were obtain when findings from both modalities combine. The advantage of paired specimens is to maximize overall diagnostic yield and the remaining material will be available for ancillary technique like IHC or for molecular testing. Diagn. Cytopathol. 2017;45:598-603. (c) 2017 Wiley Periodicals, Inc. CI - (c) 2017 Wiley Periodicals, Inc. FAU - Patel, Trupti S AU - Patel TS AUID- ORCID: 0000-0002-5887-2042 AD - Department of Pathology, Gujarat Cancer and Research Institute, Ahmedabad, Gujarat, India. FAU - Shah, Majal G AU - Shah MG AD - Department of Pathology, Gujarat Cancer and Research Institute, Ahmedabad, Gujarat, India. FAU - Gandhi, Jahnavi S AU - Gandhi JS AD - Department of Pathology, Gujarat Cancer and Research Institute, Ahmedabad, Gujarat, India. FAU - Patel, Pratik AU - Patel P AD - Department of Pathology, Gujarat Cancer and Research Institute, Ahmedabad, Gujarat, India. LA - eng PT - Journal Article DEP - 20170421 PL - United States TA - Diagn Cytopathol JT - Diagnostic cytopathology JID - 8506895 SB - IM MH - Adenocarcinoma/*diagnosis/pathology/surgery MH - Adult MH - Aged MH - Aged, 80 and over MH - Biopsy, Fine-Needle/instrumentation/*methods MH - Carcinoma, Non-Small-Cell Lung/*diagnosis/pathology/surgery MH - Carcinoma, Squamous Cell/*diagnosis/pathology/surgery MH - Diagnosis, Differential MH - Female MH - Humans MH - Image-Guided Biopsy MH - Immunohistochemistry MH - Lung Neoplasms/*diagnosis/pathology/surgery MH - Male MH - Middle Aged MH - Retrospective Studies MH - Sensitivity and Specificity OTO - NOTNLM OT - NSCLC OT - cytology OT - lung OT - small biopsy OT - sub type EDAT- 2017/04/22 06:00 MHDA- 2018/03/16 06:00 CRDT- 2017/04/22 06:00 PHST- 2016/12/26 00:00 [received] PHST- 2017/03/12 00:00 [revised] PHST- 2017/04/03 00:00 [accepted] PHST- 2017/04/22 06:00 [pubmed] PHST- 2018/03/16 06:00 [medline] PHST- 2017/04/22 06:00 [entrez] AID - 10.1002/dc.23730 [doi] PST - ppublish SO - Diagn Cytopathol. 2017 Jul;45(7):598-603. doi: 10.1002/dc.23730. Epub 2017 Apr 21.