Reversible cerebral vasoconstriction syndrome secondary to chronic cocaine abuse: Case report.

We describe the case of a 36-year-old male patient with a history of chronic headache who came to the emergency room due to an intense global headache, associated with a tonic-clonic episode and loss of consciousness. A cranial computed tomography revealed subarachnoid hemorrhage without apparent aneurysms and a left temporal hyperdense lesion suggestive of intraparenchymal hematoma on the follow-up computed tomography. Cerebral angiography showed irregularities in the right internal carotid artery, including a pseudoaneurysm and multiple stenoses in pial arteries, which were related to chronic cocaine use.

Radiological features of nephrocalcinosis, a common but forgotten entity.

Nephrocalcinosis refers to calcium deposition in the form of calcium oxalate or calcium phosphate in the renal parenchyma and tubules. After diagnosis, the cause of nephrocalcinosis must be established to carry out a comprehensive approach to this entity. Although this is a common finding, it can be underdiagnosed due to the lack of knowledge of the different presentation patterns that exist.