Gouty arthritis of the shoulder joint 50 yo male presented with shoulder pain. Note double contour sign at humeral head (homogenous linear deposition of crystal aggregates on the chondrosynovial interface of the hyaline cartilage). Labeled image: https://twitter.com/EUSmkh/status/1 #Gout #Shoulder #Clinical #POCUS #Ultrasound #Crystals