Orbital rhabdomyosarcoma metastatic to the contralateral orbit: a case report.
OBJECTIVE
To report a rare presentation of metastatic orbital rhabdomyosarcoma and the corresponding findings on magnetic resonance imaging (MRI).


METHODS
Interventional case report.


RESULTS
A 29-year-old white man was diagnosed with rhabdomyosarcoma of the left sinus and orbit for which he was treated with chemotherapy and radiation. Eighteen months after diagnosis, he returned with subacute right eye pain and dysmotility of his extraocular muscles. MRI revealed solitary enlargement of the right medial rectus muscle, and thyroidopathy was suspected. Over the next 2 months, symptoms progressed, and proptosis developed. MRI showed infiltration of seven extraocular muscles. A biopsy of right orbital tissues and the right medial rectus muscle was performed. Special tissue typing confirmed metastatic alveolar rhabdomyosarcoma. The patient underwent palliative radiation therapy and chemotherapy, but he ultimately died of disseminated disease.


CONCLUSIONS
Rhabdomyosarcoma can rarely metastasize to the extraocular muscles. Earlier recognition of orbital metastasis through radiographic and biopsy findings, along with prompt and aggressive treatment, may prevent fulminant spread of rhabdomyosarcoma.
Amato
Malena M
MM
Texas Oculoplastic Consultants, 3705 Medical Parkway, Suite 120, Austin, TX 78705, USA.
Esmaeli
Bita
B
Shore
John W
JW
D000328:Adult; D014408:Biomarkers, Tumor / Q000032:analysis; D017809:Fatal Outcome; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009918:Orbital Neoplasms / Q000737:chemistry / Q000473:pathology* / Q000556:secondary*; D012208:Rhabdomyosarcoma / Q000737:chemistry / Q000556:secondary*; D014057:Tomography, X-Ray Computed
D014408:Biomarkers, Tumor