Takayasu’s disease is an inflammatory disorder of large and medium vessels, first described by a Japanese ophthalmologist. Etiology is not fully known, although it is suspected that the main driver is an autoimmune response of the organism, combined with a genetic predisposition. This disease mainly affects females <40 years and is located mostly in the aorta and its major branches. A gold standard in Takayasu’s disease diagnostic imaging tests are: angio‑CT, angio‑MRI. There are attempts to include 18F‑FDG PET/CT into diagnostic testing. The article presents the case of a 51‑year‑old male diagnosed with Takayasu’s disease within the superior mesenteric artery following angio‑CT, and 18F‑FDG PET/CT which confirmed the diagnosis and detected other inflammation sites.