The lumbo-gluteal adipose body.

The lumbo-gluteal adipose body (LGAB) is a well-delineated fatty structure, in the lumbo-gluteal trigone, encroaching on the upper part of the gluteal region and flank. The aim of this study was to compare the gross and histological anatomy of the LGAB with that of other well-defined adipose bodies of the human body. The macroscopic study using dissections and slices in the main three planes in adults was supplemented by microscopic study of histological slices taken from fetuses and neonates. The forms and limits of the LGAB are defined, along with its structure. The LGAB appears to act as a filling structure, lining the hypodermis in the regions that it covers.