Here we describe 2 cases of renal cell carcinoma where we found the unusual metastatic sites from renal cell carcinoma on 18F-FDG PET/CT scans in post-radical nephrectomy status. The first case resolves the venous migration of the tumor as a malignant thrombus arising from a remnant stump of the left renal vein, passing through hemiazygos vein further into the azygos vein and finally into the superior vena cava just before entering into the right atrium. The second case demonstrated extensive skeletal muscle deposits involving the muscles of the trunk as well as upper and lower extremities.
From the Department of Nuclear Medicine & PET/CT, Basavatarakam Indo-American Cancer Hospital & Research Institute, Hyderabad, India.
Received for publication June 22, 2012; and revision accepted December 29, 2012.
Conflicts of interest and sources of funding: none declared.
Reprints: Hrushikesh Aurangabadkar, DRM, DNB (Nuclear Medicine), Department of Nuclear Medicine & PET/CT, Basavatarakam Indo-American Cancer Hospital & Research Institute, Road No. 14, Banjara Hills, Hyderabad 500 034, India. E-mail: email@example.com.