Wheel within a wheel sign (diagram)

{"study":{"id":65966,"case_slug":"wheel-within-a-wheel-sign-diagram","modality":"Diagram","series":[{"id":36581859,"content_type":"image/png","frames":[{"id":36581859,"width":1600,"height":1600,"current":true}],"annotations":[],"encodings":{"original_dicom":null,"video":null,"thumbnailed_files":[{"tiny":"99ab2eaf62da0301994f68b9eaee2c_tiny.jpeg","jumbo":"99ab2eaf62da0301994f68b9eaee2c_jumbo.jpeg","small":"99ab2eaf62da0301994f68b9eaee2c_small.jpeg","thumb":"99ab2eaf62da0301994f68b9eaee2c_thumb.jpeg","medium":"99ab2eaf62da0301994f68b9eaee2c_medium.jpeg","gallery":"99ab2eaf62da0301994f68b9eaee2c_gallery.jpeg","big_gallery":"99ab2eaf62da0301994f68b9eaee2c_big_gallery.jpeg","original":"99ab2eaf62da0301994f68b9eaee2c.png"}]},"perspective":null,"specifics":null}],"caption":{"us":null,"gb":null},"findings":{"us":"\u003cp\u003eThis is one of several appearances of a lesion caused by hepatic candidiasis on ultrasound. The outer hypoechoic \"wheel\" corresponds to fibrosis, which surrounds a middle hyperechoic \"wheel\" of inflammation. The central hypoechoic focus represents an area of central necrosis.\u003c/p\u003e\u003cp\u003eOf note, this appearance is not reported by CT imaging.\u003c/p\u003e","gb":"\u003cp\u003eThis is one of several appearances of a lesion caused by hepatic candidiasis on ultrasound. The outer hypoechoic \"wheel\" corresponds to fibrosis, which surrounds a middle hyperechoic \"wheel\" of inflammation. The central hypoechoic focus represents an area of central necrosis.\u003c/p\u003e\u003cp\u003eOf note, this appearance is not reported by CT imaging.\u003c/p\u003e"},"contributor_login":"nootherone321","case_id":58743,"case_key_image_id":null,"case_featured_at":null},"current_user":null,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_pin":false}}