D2I2.
benign

Liver hemangioma

A cavernous liver or hemangioma is a tumor of the liver composed of large spaces lined by monolayer hepatic cells. It is the most common benign liver tumour, and is usually and diagnosed incidentally on radiological or during for other issues. Liver hemangiomas are thought to be in origin with an rate of 0.4 – 7.3% as reported in autopsy series.

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Plain-language summary adapted from Wikipedia. Not medical advice.