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"These lesions are usually extraconal, non-enhancing masses with smooth margins, cystic and/or solid components. They are typically heterogeneous with soft tissue, fluid and fatty (sebum) components; occasionally calcifications may be present."
"Treatment and prognosis depend on size, location and involvement of orbital structures. While superficial lesion may barely require a cosmetic excision, a deeper one may require more invasive methods involving micro-dissection, orbitotomy, and rarely, intracranial exploration if the lesion extends to that extent 7."
"These lesions are usually extraconal, non-enhancing masses with smooth margins, cystic and/or solid components. They are typically heterogeneous with soft tissue, fluid and fatty (sebum) components; occasionally calcifications may be present."