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Case Reports
. 2017 Mar 10;3(3):20150495.
doi: 10.1259/bjrcr.20150495. eCollection 2017.

Uncharacteristic metastasis of a renal clear-cell carcinoma to the muscles of the forearm-case report

Oliwia Kozak  1 , Paweł Turzyński  1 , Karolina Markiet  2 , Joanna Pieńkowska  2 , Katarzyna Skrobisz-Balandowska  1 , Michał Studniarek  1
Affiliations
Case Reports

Uncharacteristic metastasis of a renal clear-cell carcinoma to the muscles of the forearm-case report

Oliwia Kozak et al. BJR Case Rep. .

Abstract

Clear-cell renal carcinoma constitutes over 90% of all cases of renal cancers. One of the least common locations of metastases of this type of cancer are skeletal muscles. We believe that this is the first case ever presented of renal clear-cell cancer metastasis to the extensor digitorum muscle. Our case should sensitize clinicians and radiologists dealing with this type of carcinoma to the abundance of metastases, their uncommon locations and frequently asymptomatic nature, which all makes them easy to overlook on physical and imaging examinations.

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Figures

Figure 1.
Figure 1.
Plain AP radiograph of the forearm and elbow showed no obvious soft tissue mass in the region of extensor digitorum muscle or evidence of any bone destruction.
Figure 2.
Figure 2.
Histopathological examination of the excised specimen showed typical cells for RCC in the muscle tissue.
Figure 3.
Figure 3.
Diffusion Weighted Imaging revealed significant restriction within the pathological mass (a). Apparent Diffusion Coefficient (ADC) measurement recorded for a marked region of interest (ROI) (b).
Figure 4.
Figure 4.
MRI coronal images present pathological mass in the extensor digitorum muscle corresponding to CCRCC metastasis in T1 weighted fat-saturated pre-contrast image (a) T1 weighted fat-saturated post-gadolinium image (b) and T2 weighted fat-saturated image (c) respectively.
See this image and copyright information in PMC

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