Lint: undifferentiated-embryonal-sarcoma-of-the-liver

"Approximately 90% of cases occur in patients under 15 years of age, most commonly between 6 and 10 years of age, but some cases have been reported in adults ¹. There is a slight male predominance, but no racial predilection ¹."

"It usually manifests as a large abdominal mass, with or without abdominal pain or discomfort ^1,3. Additional clinical features include fever, weight loss, lethargy and respiratory distress ^1,3. Acute onset of symptoms are reported in cases of rupture, but this is uncommon ¹."

"It usually manifests as a large abdominal mass, with or without abdominal pain or discomfort ^1,3. Additional clinical features include fever, weight loss, lethargy and respiratory distress ^1,3. Acute onset of symptoms are reported in cases of rupture, but this is uncommon ¹."

"About 75% of cases occur in the right lobe of the liver ^3,4. Metastases, when seen, are most frequently found in the lungs, pleura, peritoneum and bone ¹."

"Some authors have considered this as the malignant counterpart of the hepatic mesenchymal hamartoma, because there have been reports of malignant transformation of those benign tumours; however, there is no strong evidence to support that hypothesis ¹."

"cystic degeneration in hepatoblastoma or hepatocellular carcinoma (rare; elevated AFP)"

"History and etymology"