case_images: PMC4756265_01
case_images: A 56-year-old man with renal cell carcinoma in renal allograft. Findings: Gray scale ultrasound image of renal allograft (a) heterogeneous mass lesion at the upper pole of renal allograft (white arrow) with internal hypoechoic region (asterisk) suggesting necrosis; (b) the mass lesion showed internal as well as peripheral vascularity on color doppler study (Technique: 2D-Ultrasound image scanned with Phillips IU-22 scanner and curvilinear C5-1 probe with frequency
case_images: ijotm-7-051-g001.jpg
case_images: PMC4756265_01_ijotm-7-051-g001.jpg
case_images: F1
case_images: On evaluation with ultrasound, a heterogeneous vascular mass sized 9.0x7.3x6.8 cm was seen involving the upper pole of the renal allograft (Fig 1).
case_images: A 56-year-old man with renal cell carcinoma in renal allograft. Findings: Coronal CT with intravenous contrast, arterial phase of abdomen showing heterogeneously enhancing mass lesion at the upper pole of renal allograft (white arrow) in the right iliac fossa with internal hypodense nonenhancing region (asterisk) suggesting necrosis (Technique: Siemens Somatom sensation 64-slice CT scanner, Coronal CT, KV 120, Eff mAs 105, Slice thickness 5 mm. Contrast: Iohexol 350, 70 mL, Arterial Phase
case_images: ijotm-7-051-g002.jpg
case_images: PMC4756265_01_ijotm-7-051-g002.jpg
case_images: F2
case_images: Contrast enhanced computed tomography (CT) showed heterogeneously enhancing mass lesion involving the upper pole with surrounding neo-vascularity (Fig 2) with no evidence of internal calcification or fat density.
case_images: A 56-year-old man with renal cell carcinoma in renal allograft. Findings: Coronal CT of the abdomen with intravenous contrast. Curved MPR reconstruction of delayed image showing normal contrast excretion in the renal allograft with heterogeneously enhancing mass lesion at the upper pole of renal allograft involving PC system in the upper pole renal allograft (white arrow) (Technique: Siemens Somatom sensation 64-slice CT scanner, Coronal CT, KV 120, Eff mAs 105, Slice thickness 5 mm. Contrast: Iohexol 350, 70 mL, Delayed Phase [10 min
case_images: ijotm-7-051-g003.jpg
case_images: PMC4756265_01_ijotm-7-051-g003.jpg
case_images: F3
case_images: The mass lesion showed internal necrotic areas and involved the pelvicalyceal system in the upper pole (Fig 3).
case_images: A 56-year-old man with renal cell carcinoma in renal allograft. Findings: Tumor with capsule. Tumor cells are arranged in organoid pattern/fascicles. Individual cells (inset) are round to polygonal, moderately large and having clear or rarely fine granular cytoplasm with well-defined borders and round vesicular nuclei with mild anisonucleosis with rarely prominent nucleoli (H&E, x200 and x400 [inset
case_images: ijotm-7-051-g004.jpg
case_images: PMC4756265_01_ijotm-7-051-g004.jpg
case_images: F4
case_images: Histopathology confirmed the diagnosis of renal cell carcinoma, clear cell variant, Furhman grade-1, stage pT2 N0 M0 (Fig 4). 