Summary Trichosporon cutaneum, the causative organism of white piedra, was isolated from a brain abscess superimposed on as econdary metastatic deposit from a bronchial adenocarcinoma. We are indebted to Mr A. Johnston and Miss P. M. Stockdale of the Commonwealth Mycological Institute, Kew, for their assistance in identifying the fungus, and to Dr I. G. Murray, School of Hygiene and Tropical Medicine, London, who confirmed the identification at Miss Stockdale's request.