Malignant Peripheral Nerve Sheath Tumor of the Lower Eyelid: Case Presentation and Literature Review

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Solitary benign neurogenic tumors are common in the orbit, but only rarely arise from peripheral nerves in the eyelids. In contrast, malignant tumors of neural or nerve sheath elements are exceedingly rare in the orbit and, to date, have never been reported in the lower eyelid. The authors report a 55-year-old man with multiple recurrent lower eyelid masses initially treated as chalazia then misdiagnosed as neurotropic malignant melanoma on pathology. Diagnosis of malignant peripheral nerve sheath tumor was ultimately confirmed histopathologically after surgical resection. The patient has since undergone multiple resections and adjuvant radiotherapy. Twenty-two months since the last procedure, the patient remains disease-free.

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