Figure 1From: Complicated variation of simple renal cyst usually means malignancy: results from a cohort studyMalignant transformation of renal cyst (×200; H & E stain). Normal (arrow 1) and neoplastic (arrows 2, 3) cells lining macroscopic cysts, indicating that malignant complex renal cysts might be a progression of malignant simple renal cysts that transform from benign tissue.Back to article page