PMID- 18306350 OWN - NLM STAT- MEDLINE DCOM- 20080724 LR - 20080618 IS - 0008-543X (Print) IS - 0008-543X (Linking) VI - 114 IP - 3 DP - 2008 Jun 25 TI - 9p21 Deletion in the diagnosis of malignant mesothelioma in serous effusions additional to immunocytochemistry, DNA-ICM, and AgNOR analysis. PG - 204-15 LID - 10.1002/cncr.23413 [doi] AB - BACKGROUND: The diagnosis of malignant mesothelioma (MM) in serous effusions is difficult but may be achieved by the application of adjuvant methods. METHODS: The authors cytologically diagnosed 33 effusions as suspicious or positive for MM cells by using DNA-image cytometry (DNA-ICM), immunocytochemistry and AgNOR analysis. The authors further detected 9p21 deletions by chromosomal fluorescence in situ hybridization (FISH). In addition, 31 cases of metastatic carcinomas and 39 of tumor cell-negative effusions were investigated. All diagnoses were confirmed by histologic and/or clinical follow-up. RESULTS: DNA aneuploidy was found in 71% of MMs, 100% of metastatic carcinomas, and in none of the negative effusions. Calretinin was positive in 100% of MMs, in none of the metastatic carcinomas, and in 94.9% of negative effusions. BerEP4 showed positivity in 15.6% of MMs, 87.1% of metastatic carcinomas, and in none of the negative effusions. With AgNOR analysis, 89.3% of MMs and 96.7% of metastatic carcinomas showed >or=2.5 AgNOR dots as satellites and >or=4.5 as total AgNOR counts. 9p21 deletions were demonstrated in 90.9% of MM cases, 45.2% of metastatic carcinomas, and in none of the negative effusions. By cytology alone, 81.8% of MMs were identified unequivocally. Addition of DNA-ICM improved the prevalence of tumor cell detection to 87.9% and of AgNOR analysis to 97%. The introduction of 9p21 deletions by FISH improved this prevalence to 100%. CONCLUSIONS: Because of these results, the authors propose the sequential application of immunocytochemistry, DNA-ICM, and AgNOR analysis to establish a cytological diagnosis of malignant mesothelioma in serous effusions. In persistent doubtful diagnoses, the authors recommend fluorescence in situ hybridization to analyze the 9p21 deletion. CI - (c) 2008 American Cancer Society. FAU - Onofre, Fabiana Botelho de Miranda AU - Onofre FB AD - Institute of Cytopathology, Heinrich-Heine University, Dusseldorf, Germany. FAU - Onofre, Alexandre Sherlley Casimiro AU - Onofre AS FAU - Pomjanski, Natalia AU - Pomjanski N FAU - Buckstegge, Birgit AU - Buckstegge B FAU - Grote, Hans Juergen AU - Grote HJ FAU - Bocking, Alfred AU - Bocking A LA - eng PT - Journal Article PL - United States TA - Cancer JT - Cancer JID - 0374236 RN - 0 (Antigens, Nuclear) RN - 0 (nucleolar organizer region associated proteins) RN - 9007-49-2 (DNA) SB - IM MH - Aged MH - Aged, 80 and over MH - Aneuploidy MH - Antigens, Nuclear/*analysis MH - *Ascitic Fluid/pathology MH - *Chromosome Deletion MH - Chromosomes, Human, Pair 9/*genetics MH - DNA/*analysis MH - Female MH - Humans MH - *Image Cytometry MH - Immunohistochemistry MH - *In Situ Hybridization, Fluorescence MH - Male MH - Mesothelioma/*diagnosis/pathology MH - Middle Aged MH - Peritoneal Neoplasms/*diagnosis/genetics/pathology MH - Pleural Effusion, Malignant/*complications/genetics/pathology MH - Pleural Neoplasms/*diagnosis/genetics/pathology EDAT- 2008/02/29 09:00 MHDA- 2008/07/25 09:00 CRDT- 2008/02/29 09:00 PHST- 2008/02/29 09:00 [pubmed] PHST- 2008/07/25 09:00 [medline] PHST- 2008/02/29 09:00 [entrez] AID - 10.1002/cncr.23413 [doi] PST - ppublish SO - Cancer. 2008 Jun 25;114(3):204-15. doi: 10.1002/cncr.23413.