2019; ACTH; Anti-citrullinated protein antibody; Asian - Japanese; Biopsy; C-reactive protein; CD-20*; CD-30*; CD-79 alpha*; CT scan; Cortisol; Creatinine; DDAVP test*; Desmopressin; Diabetes insipidus; Diabetes insipidus - neurogenic/central; Epstein-Barr virus*; FSH; FT3; FT4; Facial palsy; Facies - abnormal; Female; Geriatric; Haematoxylin and eosin staining; Histopathology; Hypopituitarism; Hypotonic saline infusion*; IGF1; Iatrogenic disorder; Immunosuppressants*; Interstitial lung disease*; Japan; Krebs von den Lungen 6*; LH; Lactate dehydrogenase; Lung biopsy*; Lymphoproliferative disorders*; MRI; Matrix metalloproteinase 3*; Methotrexate*; Methylprednisolone; Mydriasis; New disease or syndrome: presentations/diagnosis/management; October; Oculomotor nerve palsy*; Ophthalmalgia*; Pituitary; Prednisolone; Prolactin; Ptosis; Rheumatoid arthritis; Serum osmolality; Sinus biopsy*; Skin biopsy; Soluble IL-2 receptor*; Splenomegaly; Subcutaneous nodules*; TSH; Thyroid antibodies; Thyroxine (T4); Triiodothyronine (T3); Urine osmolality