Posters

Blue nevus of the conjunctiva in a paediatric patient: a case report

Poster Details

First Author: R.Wakfie Corieh SPAIN

Co Author(s):    M. Fernández Gurria   J. San Román Llorens   M. Rodríguez Merchante   F. Vicente Andreu   B. García Sandoval   I. Jiménez-Alfaro Morote     

Abstract Details

Purpose:

Blue nevus is a congenital benign melanocytic tumor that is commonly found in the skin and carries low potential for malignant transformation. Extracutaneous presentations, including the ocular surface, are rare. The frequency of blue nevus in cohorts with conjunctival pigmented lesions was 0.6-3%. The purpose is to report an unusual case of a 10-year-old girl with a blue nevus of the conjunctiva on the left eye (LE) with progressive growth and its clinical management.

Setting:

Department of Ophthalmology. Fundación Jiménez Díaz University Hospital. Madrid, Spain.

Methods:

Best corrected visual acuity (BCVA), autorefractor (AR), performed slit-lamp biomicroscopy (SLB), anterior segment optical coherence tomography (AS-OCT), histopathologic examination of the conjunctival biopsy.

Results:

10-years-old girl with pigmented conjunctival lesion on the LE from 9 months ago. The BCVA was 20/20 and AR was -1.00 -0.25 3º. The SLB reveals pigmented lesion on the perilimbar temporal conjunctiva of 1x1mm that slightly adheres to deep planes. The SA-OCT shows a conjunctival lesion. Excisional surgery of the lesion was performed using a ‘no-touch’ technique with double freeze-thaw cryotherapy at resection margins and a conjunctival advancement. Histopathologic examination reveals combined nevus with deep subepithelial nevus and blue nevus with dendritic melanocytes in the conjunctival stroma. There has been no recurrence after 3 months of follow-up.

Conclusions:

Blue nevus is considered a congenital lesion but its full degree of pigmentation and hence its clinical diagnosis may occur commonly during childhood and adulthood. To our knowledge, there are reported only 21 patients with 23 blue nevus of the ocular surface, and just one case in a paediatric patient. This lesion has a benign course: there are no reports of tumor recurrences, infiltration of regional lymph nodes or metastasis. Blue nevus can appear clinically similar to primary acquired melanosis or melanoma, so histological confirmation is needed to make the correct diagnosis.

Financial Disclosure:

None