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 dysfunction | Hypothyroidism |
| • 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 dysfunction | Female |
| • 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 |