Testicles and ovaries
For information on the long-term effects of the testes and ovaries, see the Reproductive system section.
metabolism syndrome
1. Definitions
Metabolic syndrome is a group of conditions that include excess abdominal fat and at least two of the following:
hypertension
High levels of triglycerides and low levels of high density lipoprotein (HDL) cholesterol
High blood sugar (glucose) levels
weight
definition
Being underweight, overweight or obese is a long-term effect that is more likely to occur after treatment for certain childhood cancers.
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thyroid gland
Other risk factors
femininity
They were younger when they received treatment
The radiation dose is high
The time to diagnosis and treatment is longer
Possible health problems
Hypothyroidism (insufficient thyroid hormone): This is the most common long-term effect of thyroid disease. It usually occurs 2 to 5 years after treatment, but can occur later. It is more common in girls than in boys.
Hyperthyroidism (too much thyroid hormone): Usually develops 3 to 5 years after treatment.
Goiter (enlarged thyroid gland).
Goiter: Usually occurs 10 years or more after treatment. More common in girls than boys. These growths can be benign (non-cancerous) or malignant (cancerous).
metabolism syndrome
risk factor
Cancerous tumors
thyroid gland
Cancer types
hypophysis cerebri
Cancer types
weight
Cancer types
thyroid gland
S&S
3.1 Hypothyroidism (too little thyroid hormone)
3.2 Hyperthyroidism (excess thyroid hormone)
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thyroid gland
test mode
Talk to your child's doctor about whether your child needs a test and examination to determine signs of thyroid long-term effects. If a test is needed, find out how often it will be done.
hypophysis cerebri
test mode
Talk to your child's doctor about whether your child needs a test and examination to check for long-term effects of neuroendocrine issues. If a test is needed, find out how often it will be done.
metabolism syndrome
test mode
Talk to your child's doctor about whether your child needs a checkup and tests for signs of metabolic syndrome. If so, find out how often the tests are scheduled.
weight
test mode
Weight, body mass index, percentage body fat or size of the abdomen (abdominal fat).
Talk to your child's doctor about whether your child needs a checkup and tests to check for signs of weight gain. If a checkup is needed, find out how often it will be done.
thyroid gland
therapeutic tool
hypophysis cerebri
therapeutic tool
Possible health problems, signs and symptoms, and treatments
Some hormone levels may be low in children who have recovered from cancer with advanced neuroendocrine disease. These hormones are produced in the pituitary gland and released into the bloodstream:
growth hormone deficiency
Low levels of growth hormone are a common long-term effect of radiation to the brain in children who have recovered from cancer. The higher the radiation dose and the longer the time after treatment, the greater the risk of this long-term effect. Low levels of growth hormone can also occur in patients with acute lymphoblastic leukemia (ALL) and those who have undergone stem cell transplants involving radiation therapy and/or chemotherapy to the brain and spinal cord.
Children with low levels of growth hormone are shorter than normal as adults.
If the child's bones have not fully developed, growth hormone replacement therapy can be used to treat low levels of growth hormone for up to one year after treatment.
A deficiency of adrenocorticotropic hormone
Low levels of ACTH is an uncommon long-term effect. It may occur in children who have recovered from brain tumours, those with low levels of growth hormone or who have recovered from central hypothyroidism, or after brain radiotherapy.
Symptoms of adrenal insufficiency may be mild or go unnoticed. Symptoms and signs of adrenal insufficiency include:
Unexplained weight loss
Low levels of adrenal corticosteroids can be treated with hydrocortisone.
hyperprolactinemia
High levels of prolactin may occur after high-dose radiation to the brain or surgery that affects part of the pituitary gland. High concentrations of prolactin can cause:
Sometimes there are no signs or symptoms. Rarely does it require treatment.
Thyroid-stimulating hormone deficiency (central hypothyroidism)
Thyroid hormone levels will gradually decrease over time after radiation therapy to the brain.
Sometimes the symptoms of a lack of thyroid-stimulating hormone go unnoticed. Low thyroid hormone levels can cause slow growth, delayed puberty and other symptoms.
Low levels of thyroid hormone can be treated with thyroid hormone replacement therapy.
Lack of luteinizing hormone or follicle-stimulating hormone
Low levels of these hormones can lead to different health problems depending on the dose of radiation.
Children who have recovered from cancer and receive low-dose brain radiation therapy may develop central precocious puberty, which can cause girls to start puberty before age 8 and boys before age 9. This condition can be treated with gonadotropin-releasing hormone (GnRH) agonists to delay puberty and support the child's growth. Hydrocephalus may also increase the risk of such long-term effects.
Children who have recovered from cancer treated with high-dose radiation therapy may have low levels of luteinizing hormone or follicle-stimulating hormone. This condition can be treated with sex hormone replacement therapy, depending on the child's age and whether they are in puberty.
central diabetes insipidus
Central diabetes insipidus may be due to a deficiency or low levels of all hormones secreted and released into the blood by the anterior pituitary gland. It may occur in children who have recovered from cancer and are undergoing surgery for the hypothalamus or pituitary gland. The signs and symptoms of central diabetes insipidus include:
Treatments may include antidiuretic hormone replacement therapy, a hormone that controls the amount of urine produced by the body.
Testicles and ovaries
therapeutic tool
metabolism syndrome
therapeutic tool
Radiation therapy to the brain or abdomen.
Whole body irradiation (TBI) as part of stem cell transplantation.
weight
therapeutic tool
2.2.1 The following therapeutic approaches may increase the risk of underweight:
Whole-body irradiation (TBI) for women; abdominal radiotherapy for men; certain types of chemotherapy (alkylating agents and anthracyclines).
2.2.2 The following treatments may increase the risk of obesity:
Radiation therapy to the brain; surgery to damage the hypothalamus or pituitary gland, such as craniopharyngioma or brain tumor resection.
2.2.3 Other factors that may increase the risk of obesity:
Children who recover from cancer have a lower risk of becoming obese if they exercise enough and have a good mental outlook.
weight
therapeutic tool
2.2.1 The following therapeutic approaches may increase the risk of underweight:
Whole-body irradiation (TBI) for women; abdominal radiotherapy for men; certain types of chemotherapy (alkylating agents and anthracyclines).
2.2.2 The following treatments may increase the risk of obesity:
Radiation therapy to the brain; surgery to damage the hypothalamus or pituitary gland, such as craniopharyngioma or brain tumor resection.
2.2.3 Other factors that may increase the risk of obesity:
Children who recover from cancer have a lower risk of becoming obese if they exercise enough and have a good mental outlook.
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metabolism syndrome
Prevention and health care
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data source :
PDQ® Pediatric Treatment Editorial Board. PDQ Late Effects of Treatment for Childhood Cancer. Bethesda, MD: National Cancer Institute. Website: https://www.cancer.gov/types/childhood-cancers/late-effects-pdq. Date accessed: July 24,2018. [PMID: 26389365]
Translated by Qian Yueping (Senior Manager, Medical Device Industry, Medical Clinical Affairs Department, PhD in Biology)
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