Mobile fat; three stages?

Przyjemski and Schuster reported nodular-cystic fat necrosis in 1977,' Sahl reported mobile encapsulated lipoma in 1978,̂ and Kikuehi reported encapsulated necrosis on the legs in 1984,' These diagnostic names are scarcely used now. We encountered a patient with mobile fat. In the process of diagnosis, we noted that the medical terms have become quite complicated. We wish to clarify the terms and simplify the understanding of the disease.