NORD: Madelung's Disease - The National Organization for Rare Disorders briefly describes this rare disorder (also known as Multiple Symmetrical Lipomatosis, Benign Symmetric Lipomatosis or Lanois-Bensaude Syndrome) and lists further reference information.
OMIM Entry 151800 - Describes the form of Multiple Symmetric Lipomatosis (MSL) characterized by a collar of fat around the neck. The article suggests the cause to be a mitochondrial abnormality.
Soft Tissue Pathology - Features images of the disease, taken with various scanning techniques.