Although Takayasu arteritis (TA) is rare as a form of chronic inflammatory arteritis, it is important that it is diagnosed early because the 10-year survival rate is only 84% to 87%. Many reported patients have been young women in East Asia. We report a case of a young woman who originally presented with unexplained pulmonary consolidation. Five years later, contrast-enhanced computed tomography (CT) imaging showed thickening of the walls of the aorta and its branches and of the main and right pulmonary artery (PA), and occlusion of the left subclavian and left PAs. A diagnosis of TA was made based on these CT findings. Patients with TA often have PA involvement, and this can be the initial site of arteritis. Therefore, TA should be included in the differential diagnosis of young women with unexplained pulmonary consolidation.
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