The increased incidence of deep fungus infections, especially of the lungs, should be kept in mind. Although no characteristic pulmonary abnormality is found in candidiasis, the appearance is usually different from that seen in virus pneumonia, bronchopneumonia, or tuberculosis. The diagnosis is more difficult than in these conditions but the clinical and radiologic findings, together with cultures and serologic tests, often justify a provisional diagnosis which is sufficiently quick and reliable for the initiation of adequate treatment.