Acute myeloblastic leukemia, not having achieved remission [C92.00], Reason for Study: ^Reason: cause of erosions noted on CT max facial, cause of arachnoid granulations History: leukemia, previous Head CT max/facial showed erosions The left sphenoid greater wing shows inner table of skull erosion with extension of arachnoid space (series 901, image 10/30) with crossing blood vessel signal intensities. Inferior aspect of bilateral sphenoid greater wing show indistinctive bony cortical margins especially on axial T2 images, however, these could be artifactual. There is no evidence of definitive mass on this MR scan. These findings are non specific. Contrast enhancement MR study may help for further imaging evaluation. There is no evidence of acute ischemic or hemorrhagic lesion.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, or restricted diffusion/acute ischemia. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The mastoid air cells are clear.Mucosal thickening of the left maxillary sinus, left ethmoid sinus and left middle turbinate concha bullosa.
1. No definitive mass along bilateral sphenoid greater wing. Contrast enhanced MRI can be considered for further imaging evaluation.2. No evidence of acute ischemic or hemorrhagic lesion.