Factors contributing to bone loss
in Leukemia / Lymphoma
- Involvement of bone marrow by cancer cells, which produces activators
of bone breakdown, causes bone loss
- Many treatment programs include cortisone-like drugs which cause
bone loss
Factors contributing to bone loss after Breast Cancer
- Chemotherapy for premenopausal women often results in early menopause
- Estrogen replacement is generally omitted
- Improved diagnosis and therapy results in prolonged survival and
women are living longer in the post-menopausal state
Factors contributing to bone loss in Prostate Cancer
- Involvement of bone by cancer cells
- Treatment strategies frequently include reduction or blockade of
testosterone effects.
- Testosterone deficiency increases bone loss
- Prostate cancer frequently affects older patients who may already
have low bone mass
Osteopenia in Young Adult Survivors of Childhood Cancer
Improved survival of children with malignant diseases is, in part, due
to the application of intensive, multimodality therapies including radiotherapy,
surgery, glucocorticoids and cytotoxic agents. Such interventions have
the potential to induce complex hormonal, metabolic and nutritional
effects which may interfere with skeletal mass acquisition during childhood.
Cancer survivors may therefore reach adulthood with diminished peak
bone mass and be at increased risk for clinically significant osteoporosis
later in their life.
Osteopenia is a prominent finding in young adults who are survivors
of childhood cancers; it is likely that antineoplastic treatments during
childhood and adolescence impede peak bone mass acquisition. Bone mineral
density is lower than age and gender averages. Bone mineral density
is especially decreased in cancer survivors with history of cranial
irradiation.
We suggest that systematic attention to this potential complication
is needed in order to identify what subgroups of children may require
regular surveillance and what interventions are required for its prevention
or treatment.
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