case_images: PMC8024106_01
case_images: Contrast-enhanced computed tomography in arterial (a) and venous (b) phases, revealing a slightly enhancing mass occupying the lower pole of the left kidney.
case_images: CRIU2021-8863475.001.jpg
case_images: PMC8024106_01_CRIU2021-8863475.001.jpg
case_images: fig1
case_images: A 57-year-old asymptomatic female patient was referred for a 33 x 27 mm solid lesion arising from the lower pole of the left kidney, which was diagnosed by computed tomography (CT) performed in the context of annual surveillance (Figure 1).
case_images: 18F-Fluorodeoxyglucose positron emission tomography-computed tomography fusion scan images show a well-defined, heterogeneously low-grade fluorodeoxyglucose avid solid hypodense lesion at the lower pole of the left kidney.
case_images: CRIU2021-8863475.002.jpg
case_images: PMC8024106_01_CRIU2021-8863475.002.jpg
case_images: fig2
case_images: On 18F-fluorodeoxyglucose positron emission tomography-CT scan (Figure 2), a lump-shaped radioactive concentration shadow was observed at the lower pole of the left kidney, with a maximum standardized uptake value of 7.
case_images: Metastatic adenoid cystic carcinoma to the kidney, showing the characteristic cribriform histological pattern of growth. Normal renal parenchyma is seen at the upper half of the image (haematoxylin-eosin stain, original magnification 40x).
case_images: CRIU2021-8863475.003.jpg
case_images: PMC8024106_01_CRIU2021-8863475.003.jpg
case_images: fig3
case_images: The stroma manifested myxoid and hyalinized features surrounded by tumor cells forming cylindrical structures (Figure 3).