Table 2

 Endocrinopathy after bone marrow transplant

EndocrinopathyRisk factors
BMD, bone mineral density.
Short stature• Total body irradiation
• Previous cranial radiation
• Growth hormone deficiency
• Chronic graft versus host disease
• Poor nutrition/malabsorption
Growth hormone insufficiency• Total body irradiation
• Previous cranial radiation
Thyroid dysfunctionHypothyroidism
• Females
• Total body irradiation
• Busulphan/cyclophosphamide conditioning (lower risk than total body irradiation)
Thyroid nodules
• Females
• Younger age at treatment
Hyperthyroidism (rare)
• Total body irradiation
Thyroid cancer
• Increased time from treatment
• Younger age at treatment
• Females
Gonadal dysfunctionFemale
• Older age at treatment
• Total body irradiation
• Busulphan
Male
• Radiation ⩾4 Gy—azoospermia very likely
• Radiation ⩾20 Gy—Leydig cell failure likely (testicular boost for testicular relapse is 24 Gy)
• Bulsuphan
• Effect of age unclear
Adrenal insufficiency• Chronic graft versus host disease
Reduced BMD• Hypogonadism
• Chronic graft versus host disease
• Inactivity
• Poor nutrition
• Growth hormone deficiency
• Previous chemotherapy/radiotherapy
Metabolic syndrome• Risk factors unknown
• Total body irradiation probably important
• ?Role of growth hormone deficiency
• Hypothalamic dose ⩾51 Gy
• Physical inactivity (for example, neurological impairment)
• Endocrinopathy