Intraosseous lipoma

Case contributed by Hani Makky Al Salam , 16 Aug 2010
Diagnosis almost certain
Changed by Mostafa Elfeky, 17 Sep 2021

Updates to Quizquestion Attributes

Answer was changed:
According to the Milgram classification.Type 1: sharply delineated, viable lipomas with homogeneous fat contentType 2: predominantly fatty lesions with central necroses, calcifications or ossificationsType 3: heterogeneous, fat-containing lesions with multiple necroses, cystic transformations, wall sclerosis, and extensive calcifications or ossifications.

Updates to Quizquestion Attributes

Answer was changed:
Most are in the lower limb (71%) with the most common locations being the calcaneum (32%) and the femur (20% - especially the intertrochanteric region).

Updates to Study Attributes

Findings was added:

Distribution of intraosseous lipomas.

Layout and distribution: Frank Gaillard 2012, Line drawing of skeleton: Patrick Lynch 2006, Creative Common NC-SA-BY

Images Changes:

Image Diagram ( update )

Description was removed:
Distribution of intraosseous lipomas. Layout and distribution: Frank Gaillard 2012, Line drawing of skeleton: Patrick Lynch 2006, Creative Common NC-SA-BY

Updates to Study Attributes

Findings was added:

An intramedullary lesion is noted at the intertrochanteric metadiaphyseal region of the left femur. It has a homogeneous hypodense texture with aft density, intact thin sclerotic bone boundary and no post-contrast enhancement. 

Images Changes:

Image CT (C+ portal venous phase) ( update )

Description was removed:
Coronal MPR
Perspective was set to Coronal.
Specifics changed from to C+ portal venous phase.

Image CT (bone window) ( update )

Description was removed:
Coronal MPR
Perspective was set to Coronal.
Specifics changed from to bone window.

Image CT (bone window) ( update )

Perspective was set to Axial.

Image CT (C+ portal venous phase) ( update )

Perspective was set to Axial.
Specifics changed from C+ delayed to C+ portal venous phase.

Image 3 CT (C+ portal venous phase) ( update )

Position was set to .

Updates to Study Attributes

Findings was added:

A homogeneous lucent intramedullary bone lesion is seen at the intertrochanteric metadiaphyseal region of the left femur.

Images Changes:

Image X-ray (Frontal) ( update )

Description was removed:
Intraosseous lipoma

Updates to Case Attributes

Body was changed:

Intraosseous lipomas have a characteristic appearance on imaging studies. They do not have malignant potential and hardly ever lead to pathologic fractures. They belong to the classical "don"don't touch" lesions of the bone.

  • -<p>Intraosseous lipomas have a characteristic appearance on imaging studies. They do not have malignant potential and hardly ever lead to pathologic fractures. They belong to the classical "don't touch" lesions of the bone.</p>
  • +<p>Intraosseous lipomas have a characteristic appearance on imaging studies. They do not have malignant potential and hardly ever lead to pathologic fractures. They belong to the classical "<a title="Do not touch bony lesions" href="/articles/leave-alone-lesions-skeletal">don't touch</a>" lesions of the bone.</p>
Age was set to Adult.

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