Fig. 1

CT imaging features of mucinous tubular and spindle cell carcinoma. (A) Axial contrast CT-scan showed a well-demarcated left solid 12.0 cm renal lesion (white arrow) with tumour thrombus in the left renal vein (black arrow) and inferior vena cava (yellow arrow) in a 52-year-old male patient (case no. 3). (B) Axial contrast CT-scan showed a well-demarcated right solid 5.6 cm renal lesion (white arrow) with homogenous enhancement in a 64-year-old female patient (case no. 5). (C) Axial non-enhanced CT-scan showed a well-demarcated left solid 16.8 cm renal mass (white arrow) with calcification, mucous degeneration and cystic degeneration in a 66-year-old female patient (case no. 6). (D) Axial enhanced CT-scan showed a well-demarcated left solid 16.8 cm renal lesion (white arrow) with heterogeneous enhancement in a 66-year-old female patient (case no. 6)