{Reference Type}: Case Reports {Title}: IgG4 hypophysitis - a rare and underdiagnosed cause of pituitary gland and stalk mass-like thickening. {Author}: Murphy AN;Hannon AM;Brett FM;Agha A;Javadpour M;Looby S; {Journal}: Br J Neurosurg {Volume}: 34 {Issue}: 1 {Year}: Feb 2020 {Factor}: 1.124 {DOI}: 10.1080/02688697.2017.1416061 {Abstract}: Our aim is to present a typical case of IgG4-related hypophysitis, which will offer insight into the aetiology and pathogenesis of this relatively newly described disease. IgG4 Related Disease is a protean systemic condition that mimics inflammatory, infectious, and malignant processes. Biopsy of affected organs will show a typical histopathological pattern.