Christina Hammerschmied

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We present one case of a metachronous, atypical, multifocal renal oncocytoma with a concomitant chromophobe renal cell carcinoma (RCC) of the contralateral side and one case of bilateral and multifocal oncocytomas. Oncocytomas are benign renal tumours that rarely appear bilateral or multifocal or with coexisting RCC. A common pathogenic denominator of(More)
The linearity of a successive approximation (SA) A/D converter is typically limited by its passive network. Published converters based on capacitive arrays or resistive ladders are limited to around 10 b if no trimming or calibration is used. Although static measurements show that MOS transistors are capable of excellent matching, few MOSFET-only converters(More)
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