Male, 58 years old, with headache, status post tumor resection. Since the prior examination, findings compatible with right parietal craniotomy are seen. Scalp swelling and a small epidural fluid collection subjacent to the craniotomy are expected immediate postoperative findings.Since the prior examination, two dural based tumor nodules have been resected from along the right parietal lobe, one of which was located superiorly and paramedian at the level of the superior parietal lobule while the other was more inferior and lateral. A small amount of blood product is evident at the resection sites along with mild ill-defined enhancement along the surface of the brain. No definite nodular tissue is seen.A small amount of T2 hyperintensity and diffusion restriction surrounding the resection sites is within expected limits. The superior sagittal sinus adjacent to the paramedian resection site is attenuated, but this is fairly similar to its appearance preoperatively. Mild T2 hyperintensity more inferiorly within the bilateral posterior parietal lobes is unchanged and likely related to prior therapy.No evidence of significant generalized mass effect or midline shift is seen. No large intracranial collections are detected. The ventricular system is patent and normal in size.
Expected findings status post resection of two dural based tumor nodules along the right parietal lobe. Within the limitations caused by the immediate postoperative findings, no definite or significant residual tumor is suspected.