Indian Journal of Radiology and Imaging Indian Journal of Radiology and Imaging

: 2006  |  Volume : 16  |  Issue : 4  |  Page : 937--938

Radiological quiz - musculoskeletal

RR Kumar, MV Ramanappa, P Satish 
 Department of Radio Diagnosis, Santhiram Medical College / Santhiram General Hospital, Nandyal-518501, Andhra Pradesh, India

Correspondence Address:
R R Kumar
Dept of Radio Diagnosis, Santhiram General Hospital, Nandyal, Andhra Pradesh

How to cite this article:
Kumar R R, Ramanappa M V, Satish P. Radiological quiz - musculoskeletal.Indian J Radiol Imaging 2006;16:937-938

How to cite this URL:
Kumar R R, Ramanappa M V, Satish P. Radiological quiz - musculoskeletal. Indian J Radiol Imaging [serial online] 2006 [cited 2020 Aug 7 ];16:937-938
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Full Text

A 40 Year old Male presented with H/O fall and was referred for X - Ray of Left Ankle to R/O Fracture of Left Ankle bones

X - Ray of Left Ankle was taken and is shown below

What is your Diagnosis?

 Radiological Diagnosis


Radiograph shows presence of a well defined lucent lesion in between trabecular areas of the Calcanium Thin Sclerotic margins are seen. Central calcification is seen


Intraosseous Lipoma is a rare benign bone lesion with no Presenting Symptoms or rarely mild pain in the region Prevalence of Intraosseous Lipoma is 0.1% of all primary bone tumours Intraosseous Lipoma occurs in both sexes and is seen in metaphysis of long bones. Common sites are Calcaneum 15% Proximal Femur 15%, Tibia 15% Fibula 20%

Milligram has staged Intraosseous Lipoma into Three stages

Stage I Solid Tumor of Viable LipocytesStage II Transitional Cases with Partial fat necrosis and focal calcification and regions of viable lipocytes Death of fat cells with variable degree of cyst formation, calcification and reactive new bone formation

Radiological features:Stage I: Introsseous lipoma is seen as a well defined lucent lesion due to resorption of bony trabecule

Stage II lucent lesion with thin sclerotic border and central calcification is seen - "Target pattern" can be expansile

Stage III calcification with sclerosis is seen reactive new bone may be seen

Differential Diagnosis:

Simple bone cystAneurismal Bone cystFibrous dysplasia Bone infarcts[4]


1Diagnosis of Bone and Joint disorders By Resnik III Edition
2Radiological and Pathological correlation Of Intraosseous Lipoma by Tim Propeck,Mary Anne Bullard,John lin,Kei Doi and William Marte.- AJR 2000: 175 : 673 - 678
3Text Book of Radiology and Imaging By David Sutton 7th Edition
4G:\MedPix™ Radiology Teaching File, Cases, and Online Medical I.htm