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Case Reports
. 2019 Aug 6:27:100989.
doi: 10.1016/j.eucr.2019.100989. eCollection 2019 Nov.

Metastatic clear cell renal cell carcinoma to the forearm without identifiable primary renal mass

John Walton  1 , Jinhong Li  2 , Marisa M Clifton  1 , Ryan L Mori  1 , Alyssa M Park  1 , Joel M Sumfest  1
Affiliations
Case Reports

Metastatic clear cell renal cell carcinoma to the forearm without identifiable primary renal mass

John Walton et al. Urol Case Rep. .

Abstract

Kidney cancer is the ninth most common malignancy in the United States. Most kidney cancers are clear cell renal cell carcinoma (RCC) and arise as solid tumors from kidney parenchyma. In the setting of metastatic disease, a primary renal tumor is usually identified, and metastases are often to lung, bone, liver, and brain. Metastatic RCC without an identifiable solid kidney tumor is exceedingly rare. We report the case of a 52 year old male with a rare cutaneous RCC metastasis without an identifiable primary renal tumor.

Keywords: CT, computed tomography; FDG PET, fluorodeoxyglucose positron emission tomography; Kidney cancer; MRI, magnetic resonance imaging; RCC, renal cell carcinoma; Renal cell carcinoma.

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Figures

Fig. 1
Fig. 1
T1 weighted MRI showing a large right forearm mass.
Fig. 2
Fig. 2
T2 weighted MRI of the abdomen showing a Bosniak 2F cyst.
Fig. 3
Fig. 3
High power (40x) shows tumor cells with clear cytoplasm in vascular rich stroma.
See this image and copyright information in PMC

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