Post-operative computed tomography in two dogs with cerebral meningioma

Post-operative computed tomography (CT) has been described as a technique f or diagnosing incomplete resection or recurrence of cerebral neoplasms in h umans, The characteristics of immediate postoperative CT images in dogs wit h intracranial pathology are unknown. This report describes findings from p reoperative, immediate post-operative, and 4 week to 9 month follow-up CT e xaminations in two dogs with histologically-confirmed cerebral meningiomas. In images of one dog after surgery there was mild contrast enhancement of the tissue surrounding the surgical site. This enhancement had resolved in later images and was probably the result of surgically induced trauma. In p ost operative images of the other dog there was significant hyperattenuatio n of the tissues around the surgical site. In post contrast images there wa s increased enhancement that was evident in later images. These findings, a lthough not supported by necropsy, probably indicate incomplete excision of the tumor.