Pathology Outlines

Bone
Other tumors of bone
Lipoma

Author: Nat Pernick, M.D. (see Authors page)

Revised: 18 October 2016, last major update June 2005

Copyright: (c) 2003-2016, PathologyOutlines.com, Inc.

PubMed search: intraosseous lipoma bone

Table of Contents

Cite this page: Lipoma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/bonelipoma.html. Accessed July 14th, 2017.

Definition / general

Very rare, usually ages 30s and 40s
Often involves calcaneus; also femur, tibia; almost all cases are intramedullary
Usually asymptomatic and an incidental finding

Radiology description

Sharply outlined lytic lesion with rarefaction of bone, central area of calcification

Radiology images

Images hosted on PathOut server:

Intraosseous lipoma

Case reports

74 year old woman with intracortical lipoma in femur (Am J Surg Pathol 2002;26:804)

Microscopic (histologic) description

Mature adipose tissue, no hematopoietic elements
Variable hemorrhage, fat necrosis, calcification, reactive bone formation

Microscopic (histologic) images

Images hosted on PathOut server:

Intraosseous lipoma

Additional references

Am J Surg Pathol 1992;16:401, Arch Pathol Lab Med 1992;116:947