Srikanth R, Meenakshi S, Chaterjee Raka, Mukherjee Bipasha
Department of Pediatric Ophthalmology, Medical Research Foundation, Nungambakkam, Chennai, India.
Oman J Ophthalmol. 2012 May;5(2):118-20. doi: 10.4103/0974-620X.99378.
Dermoid cysts are choristomas (a mass of histologically normal tissue in an abnormal location), which originate from aberrant primordial tissue and are often evident soon after birth. It may occur anywhere in the body. Dermoid cysts account for about 3-9% of all orbital masses and 0.04-0.6% of primary orbital tumors. The frequent site of origin is the superotemporal quadrant of orbit. Depending on the location, size, and associated abnormalities of the cyst, the patient may have proptosis, diplopia, and restriction of eye movements. Monocular elevation deficiency (MED) is the inability to elevate one eye in abduction, adduction, or from primary position. We report this case of orbital dermoid in an adult female presenting as a monocular elevation deficiency with unilateral ptosis of right eye which was investigated and managed with good results.
皮样囊肿是迷离瘤（组织学上正常的组织在异常位置形成的肿块），起源于异常的原始组织，通常在出生后不久就很明显。它可发生于身体的任何部位。皮样囊肿约占所有眼眶肿物的3% - 9%，占原发性眼眶肿瘤的0.04% - 0.6%。其常见的起源部位是眼眶的颞上象限。根据囊肿的位置、大小及相关异常情况，患者可能出现眼球突出、复视和眼球运动受限。单眼上睑下垂（MED）是指在眼球外展、内收或从原位时无法抬高一只眼睛。我们报告了一例成年女性眼眶皮样囊肿病例，表现为单眼上睑下垂伴右眼单眼上睑下垂，经过检查和治疗，效果良好。
