1. A case of symmetrical bilateral calcareous bursitis at the elbow is described.

2. Metabolic and neurotrophic factors played a role in its genesis.

3. Chemical analysis showed a similarity between the ratio of calcium phosphate and calcium carbonate in dystrophic calcification and in the fluid in the bursal cavity.

4. An inflammatory reaction was seen around the calcium appearing interstitially: this was probably not a consequence of chemical stimuli.