07 August 2026
: Case report 
Transient Ischemic Attack Progressing to Top-of-the-Basilar Syndrome: A Case Report
Unusual clinical course, Unusual or unexpected effect of treatment, Educational Purpose (only if useful for a systematic review or synthesis)
Guoqing Zhou BEF 1, Yu Xu A 2*DOI: 10.12659/AJCR.953007
Am J Case Rep 2026; 27:e953007
Figure 1 (A) The red arrow indicates a patchy low-density shadow in the right frontal lobe (considering an old infarct). (B–D) No obvious abnormal lesions were found in the bilateral thalami, midbrain, and pons. (E–H) Computed tomography angiography reveals severe stenosis to occlusion in the P1 segment of the left posterior cerebral artery.