RT Journal Article SR Electronic T1 Extrinsic allergic alveolitis induced by the yeast Debaryomyces Hansenii JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1351 OP 1353 DO 10.1183/09031936.02.00030402 VO 20 IS 5 A1 Y. Yamamoto A1 S. Osanai A1 S. Fujiuchi A1 K. Yamazaki A1 H. Nakano A1 Y. Ohsaki A1 K. Kikuchi YR 2002 UL http://erj.ersjournals.com/content/20/5/1351.abstract AB A 65-yr-old female developed cough, fever and dyspnoea following repeated exposure to a home ultrasonic humidifier. High-resolution computed tomography showed ground-glass opacity in both lung fields. Arterial blood gas analysis gave an oxygen tension of 8.38 kPa (63 Torr). Pulmonary function testing revealed restrictive ventilatory impairment with a reduction in the diffusing capacity. The diagnosis of extrinsic allergic alveolitis (EAA) was confirmed by radiographic findings, pathological evidence of alveolitis and reproductive development by a provocation test to the humidifier water. The yeast Debaryomyces Hansenii was the only microorganism cultured from the water of the humidifier. The double diffusion precipitating test and lymphocyte proliferative response was positive for an extract of D. Hansenii, providing evidence to incriminate this fungus. This is the first described case of EAA caused by D. Hansenii.