15-year-old female with history of Ewing's sarcoma of the left masticator space, interval examination following chemotherapy. There is marked interval decrease in size of the mass arising from the left mandibular ramus, which now measures up to 19 mm in maximal dimension, previously 48 mm. There is patchy T2 hyperintensity and enhancement in the treatment bed. The previously associated oropharyngeal narrowing and mass effect on the left internal jugular vein have resolved. There is no convincing evidence of significant regional lymphadenopathy. There is no evidence of intracranial extension. Aside from mild mass effect on the left parotid gland, the salivary glands are intact. There is scattered paranasal sinus mucosal thickening.
Significant interval decrease in size of the treated left masticator space Ewing's sarcoma.I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.