title: Improvization of conventional cytology by centrifuged liquid-based cytology in oral exfoliative cytology specimen.
abstract: BACKGROUND
  Exfoliative cytology is the microscopic examination of shed or desquamated cells from the epithelial surface. Centrifuged liquid-based cytology (CLBC) is a modified technique that was used in the current study.
  
  
  OBJECTIVE
  To compare the efficacy of CLBC with conventional cytology in apparently normal mucosa after staining with Papanicolaou (PAP) stain.
  
  
  METHODS
  Fifty cases of apparently normal mucosa from healthy subjects were selected for the study. The first sample was taken and spread on the slide by the conventional technique. The second sample was flushed out in a suspending solution, centrifuged, and the cell pellet obtained was used to make the smear. The stained smears were compared for seven parameters such as adequate cellularity, clear background, uniform distribution, cellular overlapping, cellular elongation, mucus, and inflammatory cells. Chi-square test was used for statistical analysis andP≤ 0.05 was considered to be statistically significant.
  
  
  RESULTS
  There was a statistically significant difference between CLBC and conventional cytology with parameters such as adequate cellularity (P= 0.001), clear background (P= 0.001), uniform distribution (0.005), cellular overlapping, and cellular elongation (P= 0). The presence of mucus and inflammatory cells was minimal as the samples were collected from healthy subjects.
  
  
  CONCLUSIONS
  CLBC has better efficacy over the conventional method in all the parameters analyzed.
authors.affiliation: Department of Oral and Maxillofacial Pathology and Microbiology, SDM College of Dental Sciences and Hospital, Dharwad, Karnataka, India.
authors.forename: Shwetha
authors.initials: S
authors.lastname: Nambiar
authors.affiliation: Department of Oral and Maxillofacial Pathology and Microbiology, SDM College of Dental Sciences and Hospital, Dharwad, Karnataka, India.
authors.forename: Veda
authors.initials: V
authors.lastname: Hegde
authors.affiliation: Department of Oral and Maxillofacial Pathology and Microbiology, SDM College of Dental Sciences and Hospital, Dharwad, Karnataka, India.
authors.forename: Nikhil
authors.initials: N
authors.lastname: Yadav
authors.affiliation: Department of Oral and Maxillofacial Pathology and Microbiology, SDM College of Dental Sciences and Hospital, Dharwad, Karnataka, India.
authors.forename: Kaveri
authors.initials: K
authors.lastname: Hallikeri
keywords: Centrifuged liquid-based cytology (CLBC); Papanicolaou (PAP) stain; conventional technique; exfoliative cytology