Concomitant progressive supranuclear palsy and multiple system atrophy: A rare case report of tauopathy and synucleinopathy interface.

Progressive supranuclear palsy (PSP) and multiple system atrophy (MSA) are neurodegenerative disorders characterized by parkinsonian symptoms. PSP typically presents with supranuclear gaze palsy, postural instability, and subcortical dementia, while dysautonomia and cerebellar signs are hallmark features of MSA. We report the case of a 77-year-old male patient with a four-year history of progressive parkinsonian symptoms that have shown poor response to treatment.

Contrast-Induced Sialadenitis: An Under-Recognized Adverse Reaction in Radiology and Clinical Practice.

Contrast-induced sialadenitis (CIS), a rare inflammatory reaction of the salivary glands, occurs after exposure to iodinated contrast media (ICM). This self-limiting condition typically manifests as glandular swelling and pain, with variable severity, from hours to days post-contrast administration. Its etiology includes inflammatory edema, ductal obstruction, and pseudoallergic or idiosyncratic reactions.