lipoma

https://doi.org/10.1351/goldbook.11853
Benign tumor of the adipose tissue, often visible under the skin.
Note: Lipoma of the corpus callosum is a rare congenital condition that can be asymptomatic or can present with headache, hemiplegia, dementia and epilepsy.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 878 [Terms] [Paper]