CLIPPERS associated with hypersensitivity pneumonitis: a case report.

Chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids (CLIPPERS) is a rare and poorly understood pathology. In this case report we present a 51-year-old male that presented with neurological deficits with recent hypersensitivity pneumonitis. Imaging studies showed multiple punctate enhancing lesions involving the brainstem.