Long-Term Effects of Neuroblastoma Cancer Treatment

To beat childhood cancer is a huge accomplishment; however, the process isn’t really over once treatment is finished. Years – and even decades – after remission is achieved, people can have health problems relating to the treatments that saved their lives. Treatment for neuroblastoma involves strong actions – operations, chemotherapy, radiation and immunotherapy – which can impact growing bodies.  

Knowing what the possible long-term effects are makes it possible to watch for problems and deal with them early as they come up. While most survivors have healthy, fulfilling lives, knowing about possible late effects means they get the right medical check-ups. Complete care for survivors deals with these issues in a systematic way, and also acknowledges the amazing fact that they are cured. 

Hearing Loss from Platinum Chemotherapy 

Platinum-based drugs – including cisplatin and carboplatin – are essential parts of neuroblastoma treatment plans all over the world. These drugs damage the structures in the inner ear that detect high-pitched sounds, causing hearing loss that cannot be reversed. This hearing loss usually affects both ears the same way, and gets worse with the total amount of platinum given during treatment. A lot of kids have mild to moderate loss that may not be seen until school requires good hearing. 

Tests of hearing – audiometry – during treatment watch for changes in hearing, but stopping the damage isn’t possible while still giving treatment. Hearing aids help when the loss is serious enough to affect function, letting people communicate and learn normally. Speech therapy helps kids whose hearing loss affects how they learn language when it’s a vital time for learning. Annual hearing tests go on throughout childhood as the loss may get worse years after treatment is done. 

Kidney Function Impairment Requiring Monitoring 

Platinum drugs, and some other chemotherapy drugs, directly damage the kidneys, permanently affecting their ability to filter. Reduced kidney function may not cause any symptoms for years, but slowly gets worse. Some survivors develop high blood pressure as the damaged kidneys have trouble controlling fluid levels. Protein in the urine shows that the kidneys are injured and need medical help to slow the process. 

Regular blood and urine tests find early kidney problems before symptoms show, letting doctors start treatments to keep function. Drinking enough water, avoiding drugs that harm the kidneys, and controlling blood pressure all help to protect kidneys for life. Survivors need to be taught about kidney health – including what they eat and being careful about medicines. Most people keep good kidney function for life with the right check-ups and care. 

Cardiac Complications After Anthracycline Exposure 

Anthracycline chemotherapy drugs – including doxorubicin – damage heart muscle cells over time, in a way linked to the dose. This damage to the heart may not be clear until years or decades after treatment is finished. The heart muscle becoming weaker and weaker reduces how well it pumps, and could lead to heart failure if it isn’t found. The risk is directly linked to the total dose of anthracycline, with higher doses causing bigger long-term problems. 

Echocardiography – screening the heart with ultrasound – every few years finds early heart problems before symptoms are obvious. Drugs to protect the heart, start at the first signs of problems, slow the process and keep heart function. A healthy lifestyle – regular exercise, good food, and not using tobacco – protects heart health. Survivors should tell all their doctors about their anthracycline exposure, as it affects how their heart risk is assessed. 

Growth and Bone Development Challenges 

Radiation to growing bones stops normal development, causing uneven growth and shorter height when the spine is radiated. Chemotherapy affects growth through several ways – directly on bone cells, and indirectly through hormone problems. Many survivors who had cranial radiation or high-dose chemotherapy develop a lack of growth hormone. 

Their final adult height may be much lower than their genetic potential, especially when treatment happens during a time of fast growth. Bone density is reduced by chemotherapy and steroid use, which then raises the chance of fractures in later life. Taking calcium and vitamin D helps to keep bones healthy during both childhood and adulthood, and works well. Doing exercise that makes you put weight on your bones encourages new bone to grow, and goes some way to counteracting bone loss because of treatment – over a period of time. 

Growth hormone replacement treatment can help certain patients who have been found to be deficient, to grow to a better final height. Places that specialise in this sort of thing, like Fortis Healthcare in Gurgaon, give full endocrine assessments and treatment to patients who have had cancer and are worried about their growth. 

Problems with the Thyroid from Radiation 

Radiation to areas including the neck harms thyroid tissue, leading to hypothyroidism – which means needing hormone replacement for the rest of your life. The thyroid gland is especially sensitive to radiation, and even a little can cause long-lasting problems. MIBG therapy, which uses radioactive iodine, concentrates in thyroid tissue, even though drugs are used to block it. Symptoms like tiredness, putting on weight, and not being able to concentrate come on slowly, as the thyroid gland gradually gets worse.  

Testing thyroid function every year finds hormone deficiencies before symptoms make it difficult to do things every day. Thyroid hormone replacement is straightforward and works, and stops problems from hypothyroidism that isn’t treated. Some patients develop thyroid lumps, or – less often – thyroid cancer, and need to be checked regularly. Checks must go on for ever, because thyroid problems might not show up for many years after treatment. 

Worries about Fertility and Reproductive Health 

Chemotherapy drugs that use alkylating agents, and radiation to the pelvis, damage the organs of reproduction, and could cause infertility in both men and women. The function of the testes is particularly at risk, and many male patients who have survived cancer permanently lose the ability to make sperm. Female patients are at risk of premature ovarian failure and early menopause, depending on how intense the treatment was. Children with neuroblastoma who were treated before puberty might never develop the normal fertility that would be expected in adolescence. 

Options for keeping fertility before treatment give some patients the possibility of having children, although success is variable. Male patients should have a semen analysis in late adolescence to get a realistic idea of their ability to have children. Female hormone levels and menstrual cycles give indications of fertility which need to be interpreted by a specialist. Many patients manage to get pregnant naturally, or by using assisted reproductive technologies, despite having had treatment. 

Problems with Learning and Cognitive Effects 

Chemotherapy which affects the developing brain could cause slight cognitive problems which become obvious years later. The speed of processing, memory, attention and executive function are particularly at risk from the effects of treatment. These difficulties often appear when the demands of school get greater, in middle and high school. Patients who have survived cancer may need help with learning, and educational support services, to make sure they succeed at school. 

Neuropsychological tests find particular cognitive weaknesses which can be helped by specific treatments. Tuition, ways of organising things, and sometimes medication, help patients who have been affected to reach their potential at school. Most patients finish their education successfully and go on to have worthwhile careers despite cognitive problems. Finding and dealing with problems early prevents emotional problems which come from difficulties at school. 

Risks of Secondary Cancer – Requiring Care 

Having had cancer treatment before increases the risk of developing completely different cancers later in life considerably. Radiation exposure is a particular worry for secondary cancers in areas which were treated, decades later. Chemotherapy drugs including alkylating agents and topoisomerase inhibitors also raise the risk of leukaemia and lymphoma. In all, the risk of secondary cancer is between 3 and 15 percent, depending on the specific treatments received. 

Adults with neuroblastoma who had treatment as children need to be carefully screened for cancer for the rest of their lives. Checks for breast cancer begin earlier in female patients who had radiation to the chest when they were children. Checks for skin cancer deal with areas where radiation was given, where abnormal growths might develop over time. Being aware of symptoms, and getting worrying signs looked at quickly, helps to find cancers early when they occur.