PMC5347373_01
A. Computer tomographic scan (CT) case 1: coronal section showing transplant kidney in left iliac fossa; distinct mass present in upper pole and enhanced with contrast, designated by arrow. B. CT case 1: transverse section showing distinct mass in transplant kidney enhanced with contrast, predominantly posteriorly located. C. Ultrasound case 1: showing distinct mass within kidney. D. CT case 2, coronal section showing transplant kidney in right iliac fossa; indiscriminate mass located in lower pole without contrast enhancement. E. CT case 2, transverse section showing indiscriminate mass in posterior portion of kidney. F. Ultrasound case 2, showing distinct mass in posterior portion of kidney cortex.
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F1
A 44-year-old man underwent graft nephrectomy after a solid mass lesion was detected in his transplanted kidney on ultrasound, and confirmed by a CT scan (Figure 1D-F).
A. Bivalved allograft kidney, case 1: Primary lesion is clear-cell renal cell carcinoma (ccRCC) visible in upper pole (a.). Papillary adenomas not easily visualised. Cortical cyst visible (b.). B. Bivalved allograft kidney, case 2 : primary lesion (ccRCC) visible in lower pole (c.); note invasion into renal sinus fat.
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F2
This tumour showed some infiltration of renal sinus fat (Figure 2B).
Case 1: A and B. Clear-cell renal cell carcinoma, grade 3; high- and low-power fields of the two papillary adenomas are shown in C and D and E and F.
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F3
All tumours were confined to the kidney (Figure 3).
PMC5347373_02
A. Computer tomographic scan (CT) case 1: coronal section showing transplant kidney in left iliac fossa; distinct mass present in upper pole and enhanced with contrast, designated by arrow. B. CT case 1: transverse section showing distinct mass in transplant kidney enhanced with contrast, predominantly posteriorly located. C. Ultrasound case 1: showing distinct mass within kidney. D. CT case 2, coronal section showing transplant kidney in right iliac fossa; indiscriminate mass located in lower pole without contrast enhancement. E. CT case 2, transverse section showing indiscriminate mass in posterior portion of kidney. F. Ultrasound case 2, showing distinct mass in posterior portion of kidney cortex.
jkcvhl-3-14-g001.jpg
PMC5347373_02_jkcvhl-3-14-g001.jpg
F1
A 44-year-old man underwent graft nephrectomy after a solid mass lesion was detected in his transplanted kidney on ultrasound, and confirmed by a CT scan (Figure 1D-F).
A. Bivalved allograft kidney, case 1: Primary lesion is clear-cell renal cell carcinoma (ccRCC) visible in upper pole (a.). Papillary adenomas not easily visualised. Cortical cyst visible (b.). B. Bivalved allograft kidney, case 2 : primary lesion (ccRCC) visible in lower pole (c.); note invasion into renal sinus fat.
jkcvhl-3-14-g002.jpg
PMC5347373_02_jkcvhl-3-14-g002.jpg
F2
This tumour showed some infiltration of renal sinus fat (Figure 2B).
Case 2: A and B. Low-power fields showing clear cell renal cell carcinoma. C. High-power field showing rhabdoid differentiation. D. High-power field showing features consistent with a grade of 4.
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F4
A nodular lesion present in the lower pole (50 mm at largest dimension) was classified as ccRCC (grade 4), with focal rhabdoid differentiation (Figure 4).
Case 2: A-C. Clear-cell tubulopapillary renal cell carcinoma. D-F. Multilocular cystic renal neoplasm of low malignant potential.
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F5
A second lesion in the lower pole (37 mm at largest diameter) was classified as a cc tubulopapillary RCC (low grade; Figure 5A-C). A third lesion in the lower pole (7 mm at largest dimension) was classified as multilocular cystic renal neoplasm of low malignant potential (Figure 5D-F).
Case 2: A. Low-power and (B) high-power fields showing mucinous tubular and spindle cell carcinoma.
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F6
A 7-mm lesion in the upper pole was classified as mucinous tubular and spindle cell carcinoma (Figure 6).