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Abstract
Case summary
A 60-year-old woman was referred for evaluation of proptosis of the left eye, which had developed about 2 years earlier. Upon initial examination, a movable mass was palpated in the medial aspect of the left orbit. Magnetic resonance imaging of the orbit showed a 2.5 cm-sized, ovoid, cystic mass located between the left eyeball and the medial wall of the orbit. Excisional biopsy of the orbital mass was performed. The orbital mass was a well-circumscribed cystic lesion, adherent to the medial rectus muscle. Histological examination revealed that the cyst was lined with multiple layers of cuboidal epithelium with goblet cells. A diagnosis of primary conjunctival cyst was made.
References
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Figure 1.
Clinical photograph showing movable mass in the inferonasal part of the left orbit (arrows).
Figure 2.
Axial (A) and coronal (B) CT images reveal a 2.5×2.4×1.4-cm, ovoid, cystic mass in the medial aspect of the left orbit. Lateral displacement of the left globe and pressure remodeling of the medial wall in the left orbit are shown.
Figure 3.
Axial (A) T1-weighted MR image and coronal (B) T2-weighted MR image demonstrate a well-circum-scribed cystic lesion between the eyeball and medial wall in the left orbit. Axial (C) and sagittal (D) fat-sup-pressed contrast-enhanced T1-weighted MR images show the cystic mass which is adherent to medial rectus muscle without enhancement.
Figure 5.
(A) The cystic wall is lined with nonkeratinized, cuboidal, or columnar epithelium with goblet cells (H & E stain, ×100). (B) Higher magnification showed stratified cuboidal or columnar epithelial cells and goblet cells (arrows) (H & E stain, ×400).
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