Unusual Perirenal Metastasis from Lung Adenocarcinoma

A 70-year-old man underwent left upper lobectomy for lung adenocarcinoma in 2012. At the time of operation, there was no sign of systemic metastasis. After surgery, chemotherapy and radiotherapy regimens were applied for treatment. In the 2nd year following surgery, the patient presented with weakness, weight loss, cough and bilateral flank pain. He underwent thoracic and abdominal computed tomography (CT) examination. CT examination revealed ipsilateral and contralateral recurrent lung tumours, hepatic and splenic metastases (Figure 1). In both perirenal regions, especially in the posterior parts, there were heterogeneity, enhanced strands, linear and millimetric nodular densities (Figure 2, 3). This finding was interpreted as an evidence of perirenal metastasis. A new chemotherapy regimen was planned for treatment.