Hepatoblastoma is a rare malignant tumor process that occurs in the liver, mainly in children under three years of age. It is a primary liver tumor consisting of immature hepatocytes and mesenchymal cells and is characterized by an aggressive course and a high potential for metastasis. Hepatoblastoma accounts for 1-2% of all cases of childhood tumors and is more common in boys than in girls, with a ratio of 2:1. Clinically, the disease can manifest as an enlarged liver, pain in the right hypochondrium, vomiting and weight loss. Rapid diagnosis and proper treatment remain key aspects for improving patient survival.
History of the disease and interesting historical facts
Hepatoblastoma was first described in medical literature in the mid-20th century. In the early stages of studying the disease, doctors encountered many difficulties in diagnosing it and understanding its pathogenesis. In 1978, the first report of successful surgical treatment of hepatoblastoma was published, which opened up new horizons in approaches to the treatment of this disease. In recent decades, research in the field of molecular biology has advanced significantly, which has made it possible to identify genetic mutations and mechanisms that contribute to the development of the tumor. Interestingly, in the 1980s, the criterion of childhood tumor was introduced, which significantly changed the diagnosis and treatment of hepatoblastoma, allowing for a significant improvement in survival rates.
Epidemiology
According to world practice, hepatoblastoma is one of the most common primary liver tumors in children. The annual incidence is from 1 to 2 cases per 1 million children. According to statistical studies, the largest number of cases are registered at the age of 6 months to 3 years. In addition, there is a high prevalence among children with previous liver diseases, such as neonatal jaundice or Williams syndrome. Statistical data also show that hepatoblastoma occurs predominantly in boys, with a ratio of 2:1 relative to girls.
Genetic predisposition to this disease
A number of studies have demonstrated a link between mutations in certain genes and the development of hepatoblastoma. The main genes involved are:
- AFP (alpha-fetoprotein) is a marker that may increase in the case of hepatoblastoma;
- β-catenin - disturbances in its signaling pathway are associated with disease progression;
- TP53 - mutations in this gene can lead to malignant processes;
- Glutamine and folate metabolic systems - genetic abnormalities affect cell division.
There are also observations of an association between certain genetic syndromes, such as Beckwith-Wiedemann syndrome, and an increased risk of developing hepatoblastoma.
Risk factors for the development of this disease
Although the causes of hepatoblastoma are not fully understood, a number of factors can increase the risk of its development:
- The presence of hereditary syndromes (Beckwith-Wiedemann syndrome, Li-Fraumeni syndrome);
- Liver pathologies such as chronic hepatitis and cirrhosis;
- Previous liver surgery;
- Environmental and genetic factors, including exposure to carcinogens (eg, aflatoxins);
- Infectious diseases, including viral hepatitis.
Diagnosis of this disease
Diagnosis of hepatoblastoma includes several stages and methods:
- The main symptoms are abdominal enlargement, jaundice, pain syndrome, and deterioration of the general condition;
- Laboratory tests – blood test for alpha-fetoprotein (AFP), which is a specific tumor marker;
- Radiological examinations – ultrasound of the liver, CT and MRI to visualize the tumor and assess its size and prevalence;
- Biopsy is a morphological examination of a tissue sample to confirm a diagnosis;
- Differential diagnosis – exclusion of other tumor and benign liver diseases.
These methods allow doctors not only to confirm the diagnosis, but also to correctly plan further treatment tactics.
Treatment
Treatment of hepatoblastoma requires a comprehensive approach and may include the following methods:
- Surgery is the main form of treatment, which is aimed at removing the tumor;
- Chemotherapy – used in the preoperative and postoperative periods to reduce the size of the tumor and prevent relapse;
- Radioablation and biotherapy are performed in complex cases;
- Treatment of concomitant liver diseases.
List of medications used to treat this disease
Treatment for hepatoblastoma may include the following medications:
- Fluorouracil;
- Cisplatin;
- Epirubicin;
- Topotecan;
- Doxorubicin.
Each of these remedies is selected individually depending on the stage of the disease and the general condition of the patient.
Disease monitoring
Monitoring of the patient's condition after treatment of hepatoblastoma includes regular examinations, laboratory and radiological studies. The main stages of monitoring:
- Frequent monitoring of AFP levels;
- Liver ultrasound every 3-6 months;
- Assessment of liver function and general condition of the patient;
- Psychological support and social rehabilitation.
The prognosis with early diagnosis and adequate treatment is favorable, but complications such as relapse of the disease and the development of liver failure are possible.
Age-related features of the disease
Hepatoblastoma is more common in young children, but manifestations may change with age:
- In children under 3 years of age, the disease can manifest itself aggressively;
- In children over 3 years of age, the tumor may progress more slowly and develop more slowly;
- In adolescents and young people, hepatoblastoma is less common, but has a more complex course.
Questions and Answers
- What symptoms of hepatoblastoma should alert parents? Parents should be alert to abdominal enlargement, jaundice, pain in the right hypochondrium and general weight loss in the child.
- How is hepatoblastoma diagnosed? Diagnosis includes blood tests, ultrasound, CT or MRI, and tumor biopsy.
- What is the treatment for hepatoblastoma? Treatment may include surgery, chemotherapy, and radiation therapy.
- What is the prognosis for hepatoblastoma? The prognosis depends on timely diagnosis and initiation of treatment; with early detection, the chances of a full recovery are significantly increased.
- Can hepatoblastoma be prevented? There are currently no known ways to prevent this disease, but previous liver disease should be monitored.
Advice from Dr. Oleg Korzhikov
Dr. Oleg Korzhikov recommends closely monitoring the health of children and promptly contacting a doctor if there are any alarming symptoms. He emphasizes the importance of regular medical examinations, especially for children with a predisposition to liver disease. The specialist also recommends maintaining a healthy lifestyle, avoiding contact with potential carcinogens, and following vaccination rules against viral hepatitis, which can reduce the risk of liver disease.
