Images

Doctor's Information

Name : Morteza
Family : Sanei Taheri
Affiliation :Radiology Department,Shohada Tajrish Hospital,SBMU
Academic Degree : Associate Professor of Radiology
Email : This email address is being protected from spambots. You need JavaScript enabled to view it.
Resident : Mohadese Mahvari

Case Section

Muskuloskeletal System

Patient's Information

Gender : Female
Age : 14

Clinical Summary

a 14 years old girl with right lower limb pain

Imaging Findings

Signal change in right tibia as low on T1 and high on T2 with associated soft tissue involvement is seen . Both soft tissue and bony compartments enhanced after contrast injection.

Differential Diagnosis

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Final Diagnosis

osteosarcoma

Discussion (Related Text)

Osteosarcomas are malignant bone forming tumours and the second most common primary bone tumour after multiple myeloma 4. They account for ~ 20% of all primary bone tumours 1,3,4. • primary osteosarcoma - typically occurs in young patients (10-20 years) with 75% occurring before the age of 20; which is logical because the growth centers of the bone are more active during the puberty to adolescence time period.3 Therefore the epidemiology can be easily understood. For less clear reasons, there is a slight male predominance. • secondary osteosarcoma - occurs in the elderly, usually secondary to malignant degeneration of Paget's disease, extensive bone infarcts or post radiotherapy for other conditions

References

. Greenspan A. Orthopedic imaging, a practical approach. Lippincott Williams & Wilkins. (2004) ISBN:0781750067. Read it at Google Books - Find it at Amazon

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