Fig. 2
From: The anatomical pathology of gout: a systematic literature review
Photograph showing MSU crystal deposition, tophus and joint damage at the macroscopic level (sagittal plane) in the left first metatarsophalangeal joint from a cadaveric donor with tophaceous gout. Bone erosion and cartilage damage adjacent to MSU crystal deposition and tophus can be seen. Fibrous septae are also evident between deposits of MSU crystals within the tophus