Clinical question: Status post tumor resection. Signs and symptoms: As above. Pre-and post-enhanced brain MRI:Diffusion weighted images demonstrate expected tiny foci of restricted diffusion of the surgical cavity wall.Examination is to status post right posterior temporal -- occipital craniotomy. A serosanguineous field surgical cavity and with small post procedural air is identified. The cavity measures approximately a 21 x 46-mm in transaxial dimensions. Residual vasogenic edema surrounding the surgical cavity is identified with resultant subtle mass effect on the right lateral ventricle and adjacent cortical sulci.Post enhanced images demonstrate tiny interrupted linear muscular enhancement along the surgical cavity wall. There is however a thin irregular serpiginous enhancement present along the medial and superior aspect of surgical cavity which is highly suggestive of a small residual focus of tumor. This finding was within the region of tumor on preoperative study. Further follow-up with MRI is recommended. This finding measures approximately 1 at 15 x 21 mm in transaxial dimensions measured on axial post enhanced series 12 image 23.Postoperative subarachnoid air in the right frontal region is noted. No detectable additional foci of parenchymal signal abnormality or enhancement is noted. A tiny developmental venous anomaly of the right frontal cortex however is detected. This finding was present on prior exams and including the first MRI exam from 10 -- 13 -- 14 without change.
1.Status post resection right posterior temporal -- occipital tumor.2.Small focus of linear irregular enhancement along the medial -- superior aspect of the surgical cavity highly suspected of residual tumor as detailed/measured above.3.Residual peritumoral vasogenic edema and with regional mass-effect.4.Tiny focus of cortical and subcortical enhancement in the right frontal lobe highly suggestive of a tiny developmental venous anomaly remains stable since multiple prior studies and including first brain MRI exam from 10 -- 13 -- 14.