The Colposcope as an Early Warning System

Colposcopy reveals what the naked eye cannot see. Pre-invasive changes in the cervical epithelium display characteristic patterns under magnification: atypical vessels, mosaic, punctuation, and aceto-white epithelium. These signs indicate whether a lesion is benign or tends towards a precancerous stage.

The green filter plays a crucial role in vascular assessment. It enhances the contrast of blood vessels, making their architecture clearly visible. Normal vessels show a regular pattern, whereas atypical vessels are irregular, corkscrew-like, or abruptly ending. This distinction can be life-saving.

The use of acetic acid (3-5%) is standard in colposcopy. It leads to a reversible coagulation of cell proteins, making dysplastic areas visible as white regions. Under the colposcope, the boundary between normal and altered epithelium becomes distinctly recognisable.

The three-dimensional representation through the binocular system allows for the assessment of surface structures and elevations. Flat lesions differ from exophytic tumours, and the depth of an erosion becomes assessable. This spatial information is indispensable for therapy planning.