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Ocular surface squamous neoplasia: outcomes following primary excision with 2 mm margin and cryotherapy

Abstract

Purpose

To assess margins and the rate of local recurrence of ocular surface squamous neoplasia after excision with a 2 mm margin and cryotherapy at a single ophthalmic oncology center.

Outcome measures

(1) Conjunctival margin were assessed as positive, negative, or indeterminate margins. (2) Feasibility of repair without a graft. (3) Local recurrence.

Methods

Retrospective chart review of histologically proven conjunctival intraepithelial neoplasia and invasive squamous cell carcinoma cases that underwent excision with a 2 mm margin and cryotherapy.

Results

Eighty cases met inclusion criteria for the quantitative analysis. The margin was positive in six cases (7.5%), four of which were treated with post-op topical immunotherapy/chemotherapy. Of the six positive margin cases, there was one recurrence which occurred in the patient who did not receive post-op topical adjuvant therapy, however resolved after starting topical treatment. Conjunctival repair without use of a graft was feasible in 74 (93%) cases with a mean basal diameter of 6.4 mm. Total number of local recurrence was seen in three cases (4%), which were successfully treated with adjuvant topical treatment (one positive margin case, one indeterminate margin case) or repeat resection followed by episcleral plaque brachytherapy (one negative margin case).

Conclusion

Excision with 2 mm margin of OSSN is not associated with high rates of positive surgical margins. Even those with positive margins, when treated with adjuvant topical therapy did not develop recurrence. While achieving low rates of local recurrence, the conjunctiva is conserved, thereby minimizing the need for amniotic membrane or free conjunctival grafts for conjunctival repair.

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Fig. 1: Flow chart of study selection.
Fig. 2
Fig. 3: Ocular surface squamous neoplasia prior and postsurgical excision.
Fig. 4

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Funding

This work was supported by an unrestricted departmental grant from Research to Prevent Blindness Challenge Grant, to the Cole Eye Institute, Cleveland Clinic.

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Contributions

ADS was responsible for study concept and design. Acquisition, analysis, and interpretation of data done by RCB, HS, VR, CB, and GY. Drafting of the paper by RCB and ADS. Critical revision of the paper for important intellectual content performed by RCB, GY, and ADS. Administrative, technical, and material support by GY and ADS.

Corresponding author

Correspondence to Arun D. Singh.

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The authors declare that they have no conflict of interest.

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Bowen, R.C., Soto, H., Raval, V. et al. Ocular surface squamous neoplasia: outcomes following primary excision with 2 mm margin and cryotherapy. Eye 35, 3102–3109 (2021). https://doi.org/10.1038/s41433-020-01353-5

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  • DOI: https://doi.org/10.1038/s41433-020-01353-5

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