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CASE REPORT
Year : 2017  |  Volume : 9  |  Issue : 1  |  Page : 31-33

Keratin cyst: An unusual cause of eyelid mass


Department of Ophthalmology, Rural Medical College, Pravara Institute of Medical Sciences, Ahmednagar, Maharashtra, India

Correspondence Address:
Abhishek Das
Department of Ophthalmology, Rural Medical College, Pravara Institute of Medical Sciences, Loni, Ahmednagar, Maharashtra
India
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DOI: 10.4103/sjopthal.sjopthal_16_17

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Keratin cyst is a keratin-containing cyst lined by epidermis also known as epidermal cyst. Epidermal cysts are slow growing, benign tumors that result from the proliferation of surface epidermal cells within the dermis. They are usually located over scalp, face, neck, chest, back, and extremities. It differs from dermoid cyst where they lack dermal appendages. It occurs 1 in 2000 adults.[5] An 80-year-old female presented with chief complaints of painless swelling on the left upper eyelid for 8 years. From the past 8 years, the patient was aware of the swelling, but it has increased in size in the past 1 year. The swelling was nontender and local temperature was not raised. There were no pulsations or bruits over the swelling. Surgical excision was done. Histopathological examination revealed single, globular, and soft to cystic mass with cheesy material inside. Section showed cyst walled lined by cornified, distinct granular layers and contained lamellar keratin. Keratin cyst is a rare cause of eyelid mass because eyelid is not the usual location of the cyst. Surgical excision of the cyst with intact capsule is the treatment of choice as there is a least chance of recurrence.


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