Endocervicoscopy with Office Hysteroscope for Complete Visualization of Transformation Zone in Cases of Invisible...

To evaluate the role of endocervicoscopy for the visualization of the T3 transformation zone (TZ) on colposcopy.

Forty patients with either abnormal Pap smear or positive VIA-VILI and T3 TZ on colposcopy were recruited from the colposcopy clinic and subjected to endocervicoscopy with a 4-mm office hysteroscope. The view of the endocervical canal was recorded before and after the application of 5% acetic acid and the squamocolumnar junction was identified in its entirety. An endocervical curettage was taken in all the cases and compared with the final histopathology report.

Squamocolumnar junction was visible in all the 40 cases; however, in two patients (5%), cervical dilatation had to be done. The positive predictive value (PPV) of endocervicoscopy in our study was 33.3% and negative predictive value (NPV) was 100%. Dense acetowhitening/irregular polypoidal endocervical mucosa with dilated blood vessels was significant in predicting the premalignant and malignant lesions with PPV of 67% and NPV of 100%.

Endocervicoscopy allows a panoramic view of the endocervical canal. It is a safe, effective, and feasible technique for visualization of squamocolumnar junction with 5% acetic acid in cases of T3 TZ on colposcopy.