Reversible Cerebral Vasoconstriction Syndrome Associated with Infundibular Dilation.

Background: Reversible cerebral vasoconstriction syndrome (RCVS) is defined as a clinical and radiological syndrome that comprises a group of disorders characterized by sudden-onset severe headache and segmental vasoconstriction of the cerebral arteries with resolution within 3 months.

Case Presentation: A 51-year-old female patient with a 2-week history of sudden-onset severe headache, visual disturbances and cerebellum; no relevant imaging findings, except for an infundibular dilation at the origin of the posterior communicating artery, and so, angiography was performed. When symptoms persisted, a new imaging study was carried out with findings of RCVS as the cause of the symptoms from the beginning.

Risk of Pneumonitis with the Use of Different Immune Checkpoint Inhibitors in a Mexican Population.

Purpose: The incidence of pneumonitis reported in previous trials in patients with advanced cancer and use of programmed cell death protein 1 (PD-1) immunotherapy inhibitors was 2.7-3.6%.