Novel Advancements in Colposcopy: Historical Perspectives and a Systematic Review of Future Developments

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Abstract

Objective

To describe novel innovations and techniques for the detection of high-grade dysplasia.

Materials and Methods

Studies were identified through the PubMed database, spanning the last 10 years. The key words ([“computerized colposcopy” or ”digital colposcopy” or “spectroscopy” or “multispectral digital colposcopy” or “dynamic spectral imaging”, or “electrical impedance spectroscopy” or “confocal endomicroscopy” or “confocal microscopy”or “optical coherence tomography”] and [“cervical dysplasia” or cervical precancer” or “cervix” or “cervical”]) were used. The inclusion criteria were published articles of original research referring to noncolposcopic evaluation of the cervix for the detection of cervical dysplasia. Only English-language articles from the past 10 years were included, in which the technologies were used in vivo, and sensitivities and specificities could be calculated.

Results

The single author reviewed the articles for inclusion. Primary search of the database yielded 59 articles, and secondary cross-reference yielded 12 articles. Thirty-two articles met the inclusion criteria.

Conclusions

An instrument that globally assesses the cervix, such as computer-assisted colposcopy, optical spectroscopy, and dynamic spectral imaging, would provided the most comprehensive estimate of disease and is therefore best suited when treatment is preferred. Electrical impedance spectroscopy, confocal microscopy, and optical coherence tomography provide information at the cellular level to estimate histology and are therefore best suited when deferment of treatment is preferred. If a device is to eventually replace the colposcope, it will likely combine technologies to best meet the needs of the target population, and as such, no single instrument may prove to be universally appropriate. Analyses of false-positive rates, additional colposcopies and biopsies, cost, and absolute life-savings will be important when considering these technologies and are limited thus far.

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