Impulse oscillometry in comparison to spirometry in pregnant asthmatic females.

mean age of 50.7 yrs [7]. The most common histological subtypes are hybrid oncocytic (50%) and chromophobe (34%) renal cell carcinoma, while clear cell, oncocytoma and papillary renal cell cancer are less frequently found [7]. Radiographic screening is recommended, with a typical strategy involving abdominal computed tomography and/or renal ultrasound at the time of diagnosis, followed by interval screening every 3– 5 yrs [8]. Parenchyma-sparing surgery is recommended given the risk of development of further tumours [7]. In line with these recommendations, all participants in the study by FRÖHLICH et al. [1] were screened for kidney manifestations by abdominal ultrasound and none were identified.