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Comparison of Keyes Punch Biopsy Instrument with Cervical Punch Biopsy Forceps for Diagnosing Cervical Lesions
Natasha Tyagi1, Amita Suneja, Kiran Mishra
1Department of Obstetrics and Gynecology, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India.
Objective:
To assess the feasibility and efficacy of Keyes punch biopsy instrument (KP) in diagnosing cervical lesions and compare it with cervical punch biopsy forceps (CP).
Methods:
75 women having satisfactory colposcopy with abnormal transformation zone were included and paired colposcopic directed biopsies were taken using KP followed by CP from the same target area.
Results:
It was feasible in all cases to take cervical biopsy with KP after increasing its effective length. The volume of gross specimen obtained by KP was less than CP (0.076 ± 0.097 vs. 0.101 ± 0.156 cm3, p = 0.061), however on microscopic examination, mean length and mean depth of tissue in KP was greater than CP by 0.06 mm (p = 0.810) and 0.14 mm (p = 0.634) respectively. Exact agreement was found with the final surgical specimen in 42% of cases in both the biopsy forceps.
Conclusion:
KP is almost at par with CP for diagnosing preinvasive cervical lesions and is a useful adjunct to the existing armamentarium of biopsy forceps.
