Female, 47 years old, with metastatic colorectal adenocarcinoma to the cerebellum, planning examination for resection of recurrent tumor. Postoperative findings are seen compatible with suboccipital craniectomy. Eight rim-enhancing tumor within the left superior cerebellum has increased in size from the prior examination now measuring at least 24 x 15 mm in the axial plane, previously 11 x 10 mm. The degree of surrounding T2 hyperintensity has also increased. Within this enhancing lesion, there is an 8 mm focus of apparent cystic degeneration. Minimal linear enhancement is seen along the prior surgical trajectory, likely postoperative in nature. No definite new enhancing lesions are seen.
Interval increase in size of a left superior cerebellar tumor.