20 March 2026
: Case report 
Nonatherosclerotic Subclavian Steal Syndrome Due to Brachiocephalic Trunk Kinking in an Elderly Woman: A Case Report
Challenging differential diagnosis, Management of emergency care, Rare coexistence of disease or pathology
Mauro De Deus Passos ABCDEF 1,2*, Pedro R.M. Negreiros de Almeida ABCDEF 1,2, Rodolfo Loureiro Borges de Souza ABCDEF 3, Arthur Barroso Vidal Vilarinho ABCDEF 3, Daniella de Sousa Mendes Moreira Alves ABCDEF 4, Luciano Moreira Alves ABCDEF 5,6DOI: 10.12659/AJCR.950305
Am J Case Rep 2026; 27:e950305
Figure 4 Schematic illustration of the hemodynamic in the carotid-vertebral systemBlood flow normally ascends through the common carotid arteries and the left vertebral artery (red arrows). However, because of kinking at the origin of the brachiocephalic trunk (BCT), there is a pressure drop leading to flow inversion (blue arrow) through the right vertebral artery, characterizing partial subclavian steal syndrome (SSS). Medical illustration by Rodrigo Tonan. Reproduced with permission.