SCLC s/p resection and WBRT. The images are degraded by patient motion. There are postoperative findings related to left occipital craniotomy and lesionectomy. There is newly apparent subcentimeter enhancement along the anterior medial aspect of the surgical cavity. There is persistent confluent high T2 signal surrounding the resection cavity. There is also unchanged confluent cerebral white matter T2 hyperintensity elsewhere, particularly in the corona radiata. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. There is a small left maxillary sinus retention cyst. The orbits are unremarkable.
Post-treatment findings with newly apparent subcentimeter enhancement along the anterior medial aspect of the surgical cavity, which may represent tumor recurrence or treatment effects.