Prenatal diagnosis of fetal hepatic mesenchymal hamartoma

Abstract

Fetal primary liver tumors are rare. Hepatic mesenchymal hamartoma is a rare benign
tumor. It is the second most common primary liver tumors after hepatoblastoma
and is composed of an abnormal mixture of liver tissue cells of uncertain etiology.
It usually appears as a rapidly growing cystic abdominal tumor that occupies space
and can potentially compress adjacent organs, resulting in various complications,
including death. Prenatal diagnosis is challenging. Histopathologically, it presents
with variable myxomatous mesenchymal proliferation and malformed bile ducts.
Although histologically benign, this lesion often results in perinatal complications.
It can be life-threatening in the prenatal or neonatal period and the prognostic
significance of prenatal detection is still unknown. A case of prenatal diagnosis of
fetal hepatic mesenchymal hamartoma is presented.