Unmasking the potential: a historical perspective on the evolution of exfoliative cytology in oral cavity neoplasms

Exfoliative cytology has proven to be a valuable diagnostic tool in the early detection of malignant neoplasms. However, its application in the oral cavity has been met with skepticism and limited investigation due to the perception that clinical examination alone is sufficient for early diagnosis. Nonetheless, recent research efforts have focused on the utility of exfoliative cytology in oral cavity neoplasms, motivated by the high mortality rate associated with oral cancer. This manuscript reviews the historical development of exfoliative cytology in the oral cavity, highlighting key findings and advancements in the field. Early studies demonstrated the presence of neoplastic cells in oral cavity lesions and emphasized the diagnostic potential of cytology. Subsequent research explored different staining methods and observed the differential reaction of oral cavity cells to radiation therapy. The diagnostic accuracy of exfoliative cytology was reported to be as high as 92%, with a significant number of cases diagnosed as carcinomas without any clinical suspicion. The technique also proved valuable in identifying precancerous and dysplastic lesions and obviating the need for unnecessary biopsies. The manuscript delves into the difficulties encountered in sampling techniques and stresses the significance of appropriate specimen collection and handling. Various staining methods, including Papanicolaou and acridine orange, were utilized for cytological analysis. The manuscript emphasizes the extensive use of exfoliative cytology in oral cavity examinations and stresses the importance of recognizing it as a crucial diagnostic tool. Various studies have reported high positivity rates and the detection of clinically unsuspected malignant lesions. The authors recommend extensive use of exfoliative cytology in routine practice and underscore the necessity of proper sampling and evaluation techniques.