Parosteal osteosarcoma

Case contributed by Dr Ahmed Abd Rabou

Presentation

Right knee pain and swelling

Patient Data

Age: 20
Gender: Female
Modality: MRI

A large lobulated mass arises from the posterior aspect of distal femur above the lateral femoral condyle and partially encircling around the femur. It displays low signal in all pulse sequence denoting ossified matrix. Soft tissue edema around the lesion. No cortical destruction. Minimal joint effusion

Case Discussion

Features are consistent of parosteal osteosarcoma which is low grade tumour arising from the outer periosteal layer.

This case was pathologically proved.

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Case Information

rID: 22447
Case created: 1st Apr 2013
Last edited: 6th Jun 2016
Tags: tumour, bone
Inclusion in quiz mode: Included

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