PMC10065011_01
Inferior globe displacement, proptosis and eyelid swelling in the left eye.
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Physical examination showed mild swelling of the left eyelid and a yellowish subconjunctival mass in the superior bulbar region, which had a soft consistency, was non-reducible, and had no apparent posterior limit (Figures 1 and 2). The globe was displaced inferiorly by 5 mm (Figure 1), and proptosis of 5 mm was observed in the left eye.
A yellowish subconjunctival mass is visible in the superior bulbar area of the globe.
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Physical examination showed mild swelling of the left eyelid and a yellowish subconjunctival mass in the superior bulbar region, which had a soft consistency, was non-reducible, and had no apparent posterior limit (Figures 1 and 2).
T1-weighted MRI sagittal view with fat suppression demonstrates well circumscribed mass, which decreases on fat suppression, in the superior rectus belly and tendon.
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Magnetic resonance imaging of the brain and orbits demonstrated a soft tissue mass with dimensions of 1.1x1.6 x 1.7 cm involving the superior rectus muscle belly and tendon (Figures 3 and 4).
T1-weighted MRI coronal view demonstrates well circumscribed mass in the left superior rectus muscle with fat intensity in the left orbit.
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Magnetic resonance imaging of the brain and orbits demonstrated a soft tissue mass with dimensions of 1.1x1.6 x 1.7 cm involving the superior rectus muscle belly and tendon (Figures 3 and 4).
The picture shows the mass progressive growth and prolapse into the palpebral fissure.
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The superior bulbar mass gradually enlarged and prolapsed in the palpebral fissure over 4 months (Figure 5).
Hematoxylin and eosin (H&E) (1x) Whole mount section of the orbital mass demonstrates an encapsulated adipose tissue mass, with foci of lymphoid aggregates.
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A pathological study revealed mature adipose tissue, with minimal connective tissue stroma, enclosed in a thin fibrous capsule (Figure 6).
H&E (40x) The light microscopic picture of tenon capsule shows high-power field findings of lymphoid aggregate which is composed of polymorphic lymphoid cells and plasma cells, without definite evidence of granuloma and vasculitis.
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The tenon capsule showed multiple foci of small lymphoid cells and plasma cell aggregates (Figure 7).