Sarcomatoid Chromophobe Renal Cell Carcinoma

Abstract

We read with great interest and attention the recent paper by De La Parra and co-authors on the sarcomatoid transformation of chromophobe renal cell carcinoma.[1] In the review of the literature, these authors incorporate 10 cases of this uncommon condition including two own cases (their Table 1). However, the article of Akhtar et al.[2] and the work of our group[3] on this kind of tumor are missing.