The aim of this work is to illustrate imaging findings of primary lung carcinoma metastases in unusual sites.

Primary lung carcinoma is the most common cancer worldwide. About 50% of patients have metastases at initial presentation. The most frequent metastatic sites are respiratory system, brain, bone, liver, and adrenal glands. Other sites such as spinal cord, pancreas, bowel, peritoneum, spleen, orbits are less frequently affected. They are associated with worst prognosis. Increased knowledge of metastatic patterns is essential in the treatment of patients.

Uncommon metastases were diagnosed at anatomical sites such as the spinal cord, kidney, pancreas, spleen, peritoneum, intestine, corpus callosum, orbit. Spinal cord metastases: Although spinal cord is not considered as a common metastatic site, lung and breast cancers appear to be the most frequent source of intramedullary spinal cord metastases. Cervical, thoracic and lumbar spine are equally affected. Symptoms include:motor weakness, pain and sensory disturbance. MRI is the imaging modality of choice. Imaging findings include hyper T2 intramedullary lesions with enhancement. At diagnosis, most patients...

Primary lung carcinoma metastases should be considered in both common and uncommon sites. No specific imaging appearance was demonstrated.

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