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Olms C, Hix N, Neumann H, Yahiaoui-Doktor M, Remmerbach TW. Clinical comparison of liquid-based and conventional cytology of oral brush biopsies: a randomized controlled trial. Head Face Med 2018; 14:9. [PMID: 29843756 PMCID: PMC5975412 DOI: 10.1186/s13005-018-0166-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 05/15/2018] [Indexed: 11/10/2022] Open
Abstract
Background Exfoliative cytology performed on oral brush samples can help dentists to decide, whether a given oral lesion is (pre-) malignant. The use of non-invasive brush biopsies as an auxiliary tool in the diagnosis of oral mucosal lesions has gained renewed interest since improvements in cytological techniques such as the development of adjuvant diagnostic tools and liquid-based cell preparation techniques. Methods The aim of this study was to compare the quality of two different preparation techniques (cell collectors): the conventional transfer procedure to glass slides and the so-called liquid-based cytology preparation method. Cell smears were collected from 10 orally healthy individuals (mean age: 24 years) from the palatine mucosa at two different times (baseline and 4 weeks later). Slides of both techniques were stained by Giemsa (n = 40) and May-Gruenwald Giemsa (n = 40). The statistical analysis was performed with Excel. Results On specimen analysis, the liquid-based cytology showed statistically significant improvement compared to conventional glass sides (p < 0.001). Thin layers, which were performed by liquid-based cytology showed significantly better results in the parameters (p < 0.001): uniform distribution, cellular overlapping, cellular disformation, mucus, microbial colonies and debris. The conventional glass slides approach showed more cell overlapping and contamination with extraneous material than thin layers, which were performed by Orcellex® Brush cell collectors. Conclusions Both techniques are diagnostically reliable. The liquid-based method showed an overall improvement on sample preservation, specimen adequacy, visualization of cell morphology and reproducibility. Liquid-based cytology simplifies cell collection due to easier handling and less transfer errors by dentists.
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Affiliation(s)
- Constanze Olms
- Department of Dental Prosthodontics and Materials Science, University of Leipzig, Liebigstraße 12, 04103, Leipzig, Germany.
| | - Nathalie Hix
- Department of Dental Prosthodontics and Materials Science, University of Leipzig, Liebigstraße 12, 04103, Leipzig, Germany
| | - Heinrich Neumann
- Institute of Cytopathology, Am Propsthof 3, 53121, Bonn, Germany
| | - Maryam Yahiaoui-Doktor
- Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University of Leipzig, Leipzig, Germany
| | - Torsten W Remmerbach
- Section of Oral Medicine, Department of Head Medicine and Oral Health, University of Leipzig, Liebigstraße 10-14, 04103, Leipzig, Germany
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Remmerbach TW, Pomjanski N, Bauer U, Neumann H. Liquid-based versus conventional cytology of oral brush biopsies: a split-sample pilot study. Clin Oral Investig 2017; 21:2493-2498. [PMID: 28078439 DOI: 10.1007/s00784-017-2047-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 01/04/2017] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The aim of this prospective split sample study was to evaluate the applicability of liquid-based cytology (LBC) of oral brush biopsies for detection of oral cancer. METHODS Two different preparation techniques were investigated: the conventional transfer procedure to glass slides and the LBC preparation method. The obtainments of epithelial cells were performed five times with a nylon brush and transferred onto five glass slides. Additionally, the brushes, which were normally discarded, were stored in a fixative solution. Conventional slides and respective thin layers from a total of 113 cases were reviewed with both techniques. RESULTS Thin layers showed excellent morphology on a clear background, which allowed an accurate diagnosis. In contrast, the conventional glass slides showed significantly more blood contamination and cell overlapping. The sensitivity of conventional cytological diagnosis was 96.3%, the specificity archived 90.6%, the positive predictive value was 96.3% and the negative predictive value scored 90.6%. The sensitivity of the cytological diagnosis using thin layers archived 97.5%, the specificity was 68.8%, the positive predictive value revealed 88.76% and negative predictive value was 91.7%. CONCLUSION Our findings indicate that in oral cytology, LBC may replace other types of wet-fixed preparations using the full amount of collected cells, resulting in enhanced specimen quality archiving comparable values of diagnostic accuracy. CLINICAL RELEVANCE LBC facilitates the cell collection due to simpler handling and less transfer errors by dentists and may improve the overall diagnostic accuracy of oral brush biopsies in future.
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Affiliation(s)
- T W Remmerbach
- Section of Oral Medicine, Department of Head Medicine and Oral Health, University of Leipzig, Liebigstraße 10-14, 04103, Leipzig, Germany. .,Department of Oral and Maxillofacial and Facial Plastic Surgery, University of Leipzig, Liebigstraße 10-14, 04103, Leipzig, Germany. .,School of Dentistry and Oral Health, Gold Coast Campus, Griffith University 4225, Gold Coast, QLD, Australia.
| | - N Pomjanski
- Institute of Cytopathology, Heinrich Heine University, Moorenstraße 5, 40225, Düsseldorf, Germany
| | - U Bauer
- Institute of Pathology, University of Leipzig, Liebigstraße 26, Leipzig, Germany
| | - H Neumann
- Institute of Cytopathology, Am Propsthof 3, 53121, Bonn, Germany
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Braz-Silva PH, Santos RTM, Schussel JL, Gallottini M. Oral hairy leukoplakia diagnosis by Epstein-Barr virusin situhybridization in liquid-based cytology. Cytopathology 2013; 25:21-6. [DOI: 10.1111/cyt.12053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2013] [Indexed: 11/28/2022]
Affiliation(s)
- P. H. Braz-Silva
- Laboratory of Virology; Institute of Tropical Medicine; University of São Paulo; São Paulo Brazil
- Department of Oral Pathology; School of Dentistry; University of São Paulo; São Paulo Brazil
| | - R. T. M. Santos
- Division of Pathology; Adolfo Lutz Institute; São Paulo Brazil
| | - J. L. Schussel
- Department of Oral and Maxillofacial Surgery; Erasto Gaertner Hospital; Curitiba Brazil
| | - M. Gallottini
- Department of Oral Pathology; School of Dentistry; University of São Paulo; São Paulo Brazil
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Braz-Silva PH, Magalhães MHCG, Hofman V, Ortega KL, Ilie MI, Odin G, Vielh P, Hofman P. Usefulness of oral cytopathology in the diagnosis of infectious diseases. Cytopathology 2010; 21:285-99. [PMID: 20629682 DOI: 10.1111/j.1365-2303.2010.00779.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In recent years, the incidence of oral opportunistic infections has increased, partly due to the widespread implementation of organ and bone marrow transplantation and the increase in the prevalence of human immunodeficiency virus (HIV) infection. Cytology can be used as a rapid, inexpensive and simple routine procedure in diagnosing infectious diseases of the mouth. Moreover, ancillary methods can be applied to cytological samples, increasing the specificity and sensitivity for the diagnosis of infectious diseases. This review describes the cytopathological features of the main viral, fungal, bacterial and parasitic infections of the mouth. Cytological techniques of specimen collection, identification of infectious agents by cytomorphological approaches and ancillary methods, and diagnostic pitfalls will be discussed.
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Affiliation(s)
- P H Braz-Silva
- Laboratory of Clinical and Experimental Pathology, Pasteur Hospital, University of Nice Sophia Antipolis, Nice, France
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Braz-Silva PH, Ortega KL, Rezende NP, Nunes FD, Magalhães MHCG. Detection of Epstein-Barr virus (EBV) in the oral mucosa of renal transplant patients. Diagn Cytopathol 2005; 34:24-8. [PMID: 16355381 DOI: 10.1002/dc.20380] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The purpose of this study was to determine the prevalence of Epstein-Barr virus (EBV)-DNA in the oral mucosa of renal transplant patients and observe the efficacy of mouth rinses with phosphate-buffered saline (PBS) to eliminate EBV present in the saliva. Lingual, gingival, and buccal cytobrushings were obtained from normal oral mucosa of 10 renal transplant patients and 10 normal subjects, and were examined through polymerase chain reaction (PCR), before and after rinses with PBS. EBV-DNA was detected in 86.6% of renal transplant recipients and in 46.6% of healthy subjects. No significant difference was observed between oral scrapes obtained before and after rinses with PBS with regard to detection of EBV-DNA. Our results suggest that the use of PCR to detect the presence of EBV-DNA in oral mucosa in the absence of specific lesions gives rise to the problem of identifying the viral replication sites. In addition, PBS was not effective at minimizing contamination by saliva.
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Affiliation(s)
- Paulo H Braz-Silva
- Department of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil
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Gong Y, Sun X, Michael CW, Attal S, Williamson BA, Bedrossian CWM. Immunocytochemistry of serous effusion specimens: a comparison of ThinPrep vs cell block. Diagn Cytopathol 2003; 28:1-5. [PMID: 12508174 DOI: 10.1002/dc.10219] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The ThinPrep Processor is gaining popularity in both gynecologic and nongynecologic cytologic samples, including effusion specimens. We compared immunocytochemical results on ThinPrep and cell-block preparations from the same effusion specimen with antibodies commonly used in effusion cytopathology. Samples from 17 reactive effusions and 79 effusions with metastatic adenocarcinomas were each prepared as monolayer ThinPreps and formalin-fixed, paraffin-embedded cell blocks. All slides were immunostained with antibodies against intermediate filaments (cytokeratins 8 and 18, and vimentin), cytoplasmic or membrane proteins (EMA, polyclonal CEA, B72.3, and BerEP4), and nuclear antigens (Ki67, PCNA, and p53), using the avidin-biotin procedure. ThinPrep and cell-block slides were stained simultaneously, using identical protocols. Both preparations showed similar results with respect to frequency of positivity, intensity, and distribution of stain for all nonnuclear markers tested. However, for the three nuclear markers Ki67, PCNA, and p53, the frequency and intensity of reaction with ThinPrep were significantly lower than with the cell-block preparation, particularly in malignant effusions. These findings suggest that immunocytochemical results obtained with ThinPrep match those of cell block for most markers tested. However, cell-block preparation are superior to ThinPrep for nuclear markers (Ki67, PCNA, and p53).
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Affiliation(s)
- Yun Gong
- Department of Cytopathology, Northwestern University Medical School, Chicago, Illinois 60611-2908, USA
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Cuschieri KS, Seagar AL, Moore C, Gilkison G, Kornegay J, Cubie HA. Development of an automated extraction procedure for detection of human papillomavirus DNA in liquid based cytology samples. J Virol Methods 2003; 107:107-13. [PMID: 12445944 DOI: 10.1016/s0166-0934(02)00190-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Liquid based cytology samples are being used increasingly to improve cervical screening and have the advantage that residual cell suspension is available for other tests such as human papillomavirus (HPV) detection. However, as the transport medium is optimised for downstream cytology, problems can be experienced during extraction of nucleic acid. This study aimed to develop a robust protocol for automated extraction of HPV DNA from cervical, liquid based cytology samples using a high throughput robotic system. Considerable modification of existing clinical extraction protocols for swab specimens, together with optimisation of required sample input volume was required to reduce sample blockage during the extraction to acceptable levels. The blockage rate and optimal processing volume was assessed by extracting a fixed volume (1/4) of re-suspended material from the centrifuged pellets of 10, 5 and 1 ml aliquots of 200 specimens. Analysis revealed 17.5% blockage with specimens originating from 10 ml aliquots; 3% with 5 ml and no blockage with 1 ml aliquots of the same samples. A 3% blockage level is acceptable for an automatic well clearance procedure to be followed. HPV testing of the extracts by real-time PCR showed a 1.5% loss of sensitivity in extracts originating from 1 ml aliquots as compared with 5 ml aliquots with a consequent loss of detectable HPV genotypes after reverse hybridisation. In short, 5 ml of liquid based cytology specimen is recommended for nucleic acid extraction, to allow optimal detection of HPV types in clinical samples while retaining maximum efficiency of the robotic extraction procedure.
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Affiliation(s)
- Kate S Cuschieri
- Regional Clinical Virology Laboratory, Lothian University Hospitals NHS Trust, The Royal Infirmary of Edinburgh, Little France, 51 Little France Crescent, Edinburgh EH16 4SA, UK.
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Takahashi I, Kobayashi TK, Suzuki H, Nakamura S, Tezuka F. Coexistence of Pemphigus vulgaris and herpes simplex virus infection in oral mucosa diagnosed by cytology, immunohistochemistry, and polymerase chain reaction. Diagn Cytopathol 1998; 19:446-50. [PMID: 9839135 DOI: 10.1002/(sici)1097-0339(199812)19:6<446::aid-dc8>3.0.co;2-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A case of Pemphigus vulgaris concurrent with hepres simplex virus (HSV) infection in a 53-yr-old female is described, in which the diagnosis was based on oral scraping cytology. Two populations of abnormal cells were identified in the oral smear. One abnormal cell population was characterized by the presence of numerous single cells and sheets and smaller aggregates of loosely cohesive epithelial cells that appeared to have only a few points of intercellular attachment. A second population of abnormal cells showed characteristic signs of HSV infections such as ground-glass nuclear appearance and multinucleation. Subsequently, diagnosis of HSV infections based on polymerase chain reaction was applied to identify the specific DNA for HSV type 1 in the Papanicolaou specimens. To our knowledge, this is the first case in which the coexistence of Pemphigus vulgaris and HSV infection in the oral mucosa was established by cytologic diagnosis. This is discussed in view of our recent experience with this unusual oral lesion.
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Affiliation(s)
- I Takahashi
- Department of Cytology, Miyagi Cancer Society, Japan
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