"Although this is a very rare entity, common radiographic findings that have been reported include non-specific enlargement of the pituitary gland with or without infundibulum enlargement that is visible on both CT and MRI 1,4,5. Post-contrast T1-weighted MR images may further reveal enhancement 1,4,5."
"IgG4-related hypophysitis is a rare cause of inflammation of the pituitary gland and an uncommon manifestation of the systemic IgG4-related disease (IgG4-RD)."
"Although IgG4-RD tends to present in middle-aged and elderly men, the gender ratio is more balanced in patients with IgG4-related hypophysitis and other head and neck manifestations of IgG4-RD 1."
"Although IgG4-RD tends to present in middle-aged and elderly men, the gender ratio is more balanced in patients with IgG4-related hypophysitis and other head and neck manifestations of IgG4-RD 1."
"Other associated head and neck manifestations of IgG4-RD, such as IgG4-related hypertrophic pachymeningitis, may also be seen 1,4,5."
"hypopituitarism or individual endocrine hormone deficiencies (e.g. hypothyroidism, hypogonadism)"
"mass effects on adjacent structures (e.g. optic chiasm)"
"granulomatous hypophysitis (e.g. due to neurosarcoidosis)"