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Undifferentiated (embryonal) sarcoma of the liver: report of 31 cases
Insights
Undifferentiated (embryonal) sarcoma of the liver predominantly affects children aged 6-10. This aggressive liver cancer has a poor prognosis, with a median survival under one year.
Area of Science:
- Pediatric oncology
- Hepatobiliary pathology
Background:
- Undifferentiated (embryonal) sarcoma of the liver is a rare and aggressive malignancy.
- This tumor predominantly affects the pediatric population, with a peak incidence between 6 and 10 years of age.
Purpose of the Study:
- To present a series of thirty-one cases of undifferentiated (embryonal) sarcoma of the liver.
- To describe the clinical presentation, radiographic findings, and histopathological characteristics of this rare liver tumor.
Main Methods:
- Retrospective review of thirty-one cases of undifferentiated (embryonal) sarcoma of the liver.
- Analysis of clinical data, radiographic imaging, and histopathological features.
Main Results:
- The majority of patients (51.6%) were between 6 and 10 years old.
- Common presenting symptoms included abdominal mass and pain.
- Histological examination revealed characteristic features including pseudocapsule, undifferentiated sarcomatous cells, and eosinophilic, PAS-positive globules.
Conclusions:
- Undifferentiated (embryonal) sarcoma of the liver is a challenging diagnosis with a poor prognosis.
- Early recognition and further research into treatment strategies are crucial for improving patient outcomes.
Abstract:
Thirty-one cases of undifferentiated (embryonal) sarcoma of the liver are presented. The tumor is found predominantly in the pediatric age group, the majority of patients (51.6%) being between 6 and 10 years of age. An abdominal mass and pain are the usual presenting symptoms. Radiographic examination is nonspecific except to demonstrate a space-occupying lesion of the liver. The tumors are large, single, usually globular and well demarcated, and have multiple cystic areas of hemorrhage, necrosis, and gelatinous degeneration. Histologic examination shows a pseudocapsule partially separating the normal liver from undifferentiated sarcomatous cells that, near the periphery of the tumor, surround entrapped hyperplastic or degenerating bile duct-like structures. Eosinophilic globules that are PAS positive are usually found within and adjacent to tumor cells. Areas of necrosis and hemorrhage are prominent. The prognosis is poor, with a median survival of less than 1 year following diagnosis.