|Year : 1988 | Volume
| Issue : 4 | Page : 182-183
Conjunctival cyst after retinal detachment surgery
SP Garg, Lalit Verma, PK Khosla
Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, Ansari Nagar, New Delhi-110029, India
S P Garg
Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, Ansari Nagar, New Delhi-110029
Source of Support: None, Conflict of Interest: None
A case of implantation cyst of the conjunctiva follow ing retinal detachment surgery is reported
|How to cite this article:|
Garg S P, Verma L, Khosla P K. Conjunctival cyst after retinal detachment surgery. Indian J Ophthalmol 1988;36:182-3
|How to cite this URL:|
Garg S P, Verma L, Khosla P K. Conjunctival cyst after retinal detachment surgery. Indian J Ophthalmol [serial online] 1988 [cited 2020 Feb 24];36:182-3. Available from: http://www.ijo.in/text.asp?1988/36/4/182/26115
| Introduction|| |
Conjunctival cysts can arise spontaneously , or occur following trauma ,, infection , or surgery ,. Conjunctival cysts following retinal detachment surgery are rare; we are aware of only three reported cases to date.
We present one case of conjunctival cyst following routine surgery for retinal detachment.
| Case Report|| |
A 45-year-old lady had decreased vision in her left eve due to a total rhegmatogenous retinal detachment. Under local anaesthesia, after appropriate blocks, a 360° limbal peritomy was performed with radial relaxing incisions at 10 and 4'O clock positions. Cryopexy was done at 11 and 1'O clock and' a solid silicone grooved explant was placed with an encircling band. After drainage of subretinal fluid the retina settled on the buckle. The conjunctiva and Tenon's capsule were reapproximated at the limbus with 6-o chromic catgut sutures, with additional sutures in two separate layers along the relaxing incisions.
The patient was asymptomatic until one year later, when she complained of a foreign body sensation in her left eye. Examination revealed a translucent, round nontender, cystic lesion in the bulbar conjunctiva at 5'O clock.
Under topical 4% xylocaine anethesia, the cyst was excised. Conjunctiva and Tenon's capsule were carefully dissected from the surface and sides of the lesion. The 10mm x 12mm cystic mass was removed entirely [Figure - 1]. There was no communication of the cyst with intraocular structures. The Tenon's capsule and the remaining conjunctiva were closed. When last seen, six months after cyst removal, the patient was asymptomatic with no recurrence.
Histology showed the cyst lining to be of non-keratinizing stratified epithelium [Figure - 2] with goblet cells, consistent with the diagnosis of a conjunctival implantation cyst.
| Discussion|| |
Conjunctival complications following surgery for retinal attachment include symblepharon, granuloma and implantation cyst . While the former two have been well documented, conjunctival cysts rarely have been reported.
The origin of these cysts is not entirely clear, but various mechanisms have been proposed. In his case report of a cist following surgery for retinal detachment, Ascott stated that implantation of epithelium probably occurred while drawing a conjunctival suture through deeper tissues. McCarthy and co-workers7 suggested that a tongue of conjunctiva may be inadvertently incarcerated into a wound closure thus exposing a conjunctival edge to deeper tissues. Once conjunctival epithelium gains access, it could then proceed to line Tenon's capsule and the episclera. Another mechanism for cyst formation may be an epithelial downgrowth. Dryden and Leibsohn showed that epithelium can grow down from the conjunctival surface to line Tenon's capsule, surrounding implants following enucleation . Whatever the mechanism, viable epithelium gains access to, and probably lines the underlying ocular tissues. According to Parson", the cysts, growing by the secretion of inverted epithelial cells as well as by the degeneration and desquamation of the innermost cells, often become quite large.
Although three reports ,, exist of large conjunctival cysts following retinal detachment surgery, the true incidence of implantation cysts is not known. The reason for this could be the small size of these cysts, absence of any symptoms or rarity of occurence. Although we have been performing surgery for retinal detachment for over 15 years, this is our first encounter of a patient who presented with a conjunctival cyst.
| References|| |
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[Figure - 1], [Figure - 2]