Calcineurin Inhibitors
Fig. 23.1 Cyclosporine-induced PRES. Axial FLAIR (a–c) and SWI (d) MR images show cortical and subcortical hyperintensity within the posterior frontal lobes, parietal lobes, and occipital lobes. In addition, there…
Warfarin (Coumadin)
Fig. 32.1 Warfarin-associated intracranial hemorrhage. The patient underwent anticoagulation for a left MCA cardioembolic stroke shortly after atrial fibrillation ablation procedure. Axial non-contrast CT (a), axial DWI (b), and axial…
Ipilimumab (MDX-010, Yervoy)
Fig. 22.1 Ipilimumab-induced hypophysitis. The patient has a history of metastatic melanoma treated with ipilimumab. Initial sagittal post-contrast T1 MRI (a) shows a normal pituitary gland and stalk. Sagittal and…
Oral Contraceptives (Estrogen and Progestin)
Fig. 47.1 Venous sinus thrombosis associated with oral contraceptive use. Axial noncontrast CT image (a) shows hyperattenuation of the internal cerebral veins and straight sinus (arrows). The corresponding T2*GRE MRI…
Supplemental Oxygen
Fig. 35.1 Supplemental oxygen. Axial FLAIR MR images (a, b) show diffuse sulcal hyperintensity. The corresponding axial post-contrast T1-weighted (c) and susceptibility-weighted (d) MR images show no associated abnormal enhancement…
Aspirin and Plavix/Clopidogrel
Fig. 31.1 Intraparenchymal hematoma related to aspirin and Plavix. Axial (a) and coronal (b) non-contrast CT images show a large right cerebral hemisphere hematoma with associated midline shift to the…
Nasal Decongestants
Fig. 55.1 Rhinitis medicamentosa. Axial (a) and coronal (b) CT images show marked mucosal thickening of the bilateral inferior turbinates (arrows), with resultant nasal airway obstruction 55.4 Differential Diagnosis Allergic…
Angiotensin Converting Enzyme (ACE) Inhibitors
Fig. 43.1 Diffuse AACE inhibitor induced angioedema. Axial contrast-enhanced CT image shows circumferential mucosal pharyngeal swelling (arrows) and diffuse stranding of the parapharyngeal and subcutaneous fat bilaterally Fig. 43.2 Focal…
Bromocriptine (Parlodel) and Cabergoline (Dostinex)
Fig. 24.1 Tumor shrinkage. Coronal T2-weighted (a) and coronal post-contrast T1-weighted (b) MR images show a pituitary prolactinoma (arrows) that compresses the optic apparatus. Coronal T2-weighted (c) and coronal post-contrast…
Manganese in Total Parenteral Nutrition
Fig. 41.1 Manganese toxicity in total parenteral nutrition. Axial (a, b) and sagittal (c, d) T1-weighted MRI images show patchy hyperintensity within the bilateral basal ganglia, cerebral peduncles, and anterior…
