Metastatic malignant melanoma status post surgery in the left scalp. Brain: There are postoperative findings related to left occipital scalp tumor resection. There is an enhancing nodular lesion with restricted diffusion in the left occipital scalp surgical bed subgaleal space that measures approximately 25 mm in length and 10 mm in thickness. The underlying calvarium appears to be grossly intact. There is also a 6 mm diameter enhancing nodule in the left occipital subcutaneous tissues more superiorly, as well as a 12 mm wide enhancing nodule in the left parietal scalp subcutaneous tissues adjacent to the incision plane. There is no evidence of intracranial tumor or acute infarction. The ventricular system is normal in size. The orbits are intact. There are bilateral mastoid effusions. There is a small retention cyst in the right maxillary sinus. There is a subcentimeter probable hemangioma in the right parietal calvarium.
Nodules in the left occipital and parietal scalp surgical bed likely represent residual or recurrent melanoma.