Imaging of metastatic orbital leiomyosarcoma

Area of Science:

• Ophthalmology
• Oncology
• Radiology

Background:

• Orbital tumors are rare, and metastatic disease to the orbit presents unique diagnostic challenges.
• Leiomyosarcoma, a malignant mesenchymal tumor, typically arises in soft tissues but can metastasize to distant sites.

Observation:

• A 74-year-old male presented with painless proptosis of the left eye.
• Imaging studies including orbital ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI) revealed a large medial orbital mass.

Findings:

• Pathologic examination confirmed the orbital mass as a metastatic orbital leiomyosarcoma.
• The study details the comprehensive imaging characteristics of this rare metastatic tumor.

Implications:

• Integrated use of ultrasound, CT, and MRI is crucial for accurate diagnosis and surgical planning of orbital masses.
• This case highlights the importance of considering metastatic disease in the differential diagnosis of orbital tumors, even in the absence of typical symptoms.