Cited 2 times since 2014 (0.2 per year) source: EuropePMC Case reports in oncology, Volume 7, Issue 1, 1 1 2014, Pages 122-125 Benefit of a second opinion for lung cancer: no metastasis to the kidney but a synchronous primary renal neoplasm. Ter Avest MJ, Schook RM, Koudstaal LG, Grünberg K, Paul MA, Smit EF, Postmus PE
Background
The finding of a renal mass on imaging is suggestive of metastatic non-small cell lung cancer in the presence of a lung tumor but can also have another origin.
Case report
We describe the case of a patient diagnosed with stage IV lung cancer based on a renal metastasis. A second opinion including review of histopathological data and additional imaging followed by lung surgery and cryoablation of the kidney lesion revealed two tumors of different origins, non-small cell lung cancer and a renal cell carcinoma.
Discussion
The presence of a renal mass diagnosed on a CT scan in a patient with lung cancer is not always synonymous with metastatic disease. Confirmation of diagnosis by tissue sampling is mandatory, especially if a synchronous primary tumor is possible.
