Cerebral metastases

Innumerable rim enhancing lesions are demonstrated throughout the supratentorial and infratentorial brain. These lesions are predominantly centered at the grey-white matter junction although there is a deposit in the body of the left lateral ventricle. The largest lesion is in the parafalcine left parietal lobe with moderate surrounding T2 hyperintensity suggestive of reactive edema. 

No central diffusion restriction is demonstrated. Mildly increased DWI signal at the enhancing component of the some of the larger lesions may reflect high cellularity. Mild compression of the trigone of the left lateral ventricle. Ventricles and sulci are otherwise commensurate the patient's age.

Conclusion: 

Innumerable rim enhancing lesions without central diffusion restriction are compatible with metastases. 

There is a left hilar lung mass with at least partial collapse of the left upper lobe. Apparent widening of the mediastinum may partly be due to the collapsed upper lobe or due to left sided mediastinal lymphadenopathy. Small ill-defined nodules bilaterally are likely to represent pulmonary metastases.

There is a solid left upper lobe lesion noted. Large left hilar lymph node. There are innumerable further pulmonary lesions noted, consistent with metastatic disease.

No solid liver lesions are identified. Adrenals are normal. 

Conclusion: Left upper lobe pulmonary mass. Enlarged left hilar node and extensive metastatic disease.