Left orbital rhabdomyosarcoma partially resected in March 2014 and treated with chemotherapy and proton beam therapy, now off therapy. The patchy high T2 signal and enhancement in the left lacrimal fossa and the superior and lateral extraconal aspects of the left orbit has slightly diminished and there is no evidence of a measurable tumor. There is also minimal residual signal abnormality in the region of the sphenoid triangle. The rest of the left orbit is unremarkable. The right orbits is intact. The imaged portions of the brain appear unremarkable. There is interval increased paranasal sinus mucosal thickening and secretions. There is bilateral tympanomastoid fluid.
1. Post-treatment findings in the left orbit without evidence of locally recurrent tumor.2. Increased diffuse paranasal sinus inflammation.3. Nonspecific inflammatory changes in the bilateral mastoid air cells may represent mastoiditis.