causes of ileitis
Infectious
Yersinia spp.
Salmonella spp.
Clostridium difficile
Typhlitis
Mycobacterium tuberculosis
Mycobacterium avium
Actinomycosis
Anisakiasis
Cytomegalovirus
Histoplasma capsulatum
Spondyloarthropathies
Ankylosing spondylitis
Reactive arthritis
Arthritis associated with inflammatory bowel disease
Psoriasis with arthritis
Undifferentiated spondylarthropathy
Vascular
Vasculitides
Systemic lupus erythematosus
Polyarteritis nodosa
Henoch-Schönlein purpura
Behçet’s disease
Other vasculitides: Churg-Strauss syndrome, rheumatoid arthritis vasculitis,
Wegener granulomatosis, lymphomatoid granulomatosis, giant-cell
arteritis, Takayasu arteritis, thromboangiitis obliterans
Ischemia
Small-bowel neoplasms
Cecal or small-bowel (ileal) adenocarcinoma
Lymphoma
Carcinoid tumor
Lymphosarcoma
Metastatic cancer
Drug-related
NSAID enteropathy
Other drugs: KCL tablets, parenteral gold therapy, oral contraceptives, ergotamine,
digoxin, diuretics, antihypertensives
Infiltrative
Eosinophilic enteritis
Sarcoidosis
Amyloidosis
Other causes
Backwash ileitis due to ulcerative colitis
Endometriosis
Radiation enteritis