Pathological indications for conservative therapy in treating cervical cancer

Area of Science:

• Gynecology
• Oncology
• Surgical Oncology

Background:

• Neodymium-yttrium-aluminum-garnet (Nd-YAG) laser conization was performed on 366 patients with carcinoma in situ (CIS), 198 with microinvasive carcinoma (MIC), and 29 with early invasive cancer (IC).
• Diagnostic accuracy was 72.5% for CIS and 74.6% for MIC and early IC.
• Laser conization is a therapeutic option for cervical precancerous and early-stage cancerous conditions.

Purpose of the Study:

• To evaluate the efficacy and outcomes of Nd:YAG laser conization in patients with cervical intraepithelial neoplasia and early-stage invasive cervical cancer.
• To determine the optimal invasion depth for Nd:YAG laser conization in early invasive cervical cancer.
• To assess the recurrence and cure rates associated with Nd:YAG laser conization based on invasion depth.

Main Methods:

• Retrospective analysis of 593 patients undergoing Nd:YAG laser conization.
• Categorization of patients based on diagnosis: CIS, MIC, and IC with varying invasion depths.
• Evaluation of diagnostic accuracy, complete excision rates, residual disease rates, and recurrence-free survival.

Main Results:

• Complete excision via Nd:YAG laser conization led to no disease recurrence in all patients.
• Incomplete excision rates varied significantly with invasion depth, ranging from 21.7% in MIC to 100% in IC with >5 mm invasion.
• The residual rate for MIC and IC with ≤4 mm invasion was 8.5%, significantly lower than for IC with 4.1-5 mm invasion (62.5%).

Conclusions:

• Nd:YAG laser conization is effective for early invasive cervical cancer when invasion is within 4 mm and complete excision is achieved.
• The study suggests that Nd:YAG laser conization is a viable treatment option for selected cases of early invasive cervical cancer.
• Careful patient selection based on invasion depth is crucial for optimizing outcomes with Nd:YAG laser conization.