7M

UBC

Dr. Tudor H. Hughes M.D., FRCR Department of Radiology University of California School of Medicine San Diego, California 45F swelling of arm with numbness of 2nd and 3rd fingers

Ax PDFSAx T1 *

Fibrolipomatous hamartoma of the median nerve with macrodystrophia lipomatosis Nerve territory directed macrodactyly Localised form of gigantism Median or Plantar nerves Possible relation with neurofibromatosis

Dr. Tudor H. Hughes M.D., FRCR Department of Radiology University of California School of Medicine San Diego, California 65M Pain in arm and leg

*

Fibrosarcoma of humerus Metastasis to femur Very aggressive tumour 3 rd most common primary malignant bone Osteosarcoma, chondrosarcoma Bony or soft tissue Looks like MFH Primary or secondary in Irradiation, Paget’s, dedifferentaion of chondro MFH in bone infarct

Description of bone lesion Age Location Axial Body or posterior elements Appendicular Epi, Met, Dia. Medullary, Eccentric, Cortical Size, shape, lytic, sclerotic Margins Geographic, Moth eaten, Permeative Wide or narrow zone of transition Periosteal reaction, Soft tissue mass Matrix

Dr. Tudor H. Hughes M.D., FRCR Department of Radiology University of California School of Medicine San Diego, California 35M 8w post injury

Cor T1 Cor T2

Post traumatic myositsis ossificans 4/52 Faint peripheral Ca Periosteal reaction 8/52 Circumscribed cortex Central lacy pattern 5/12 Maturity >6/12 Regression Separate from bone 1 year Usually disappears Periosteal reaction remains

Dr. Tudor H. Hughes M.D., FRCR Department of Radiology University of California School of Medicine San Diego, California 25M Blocker

*

Sport related myositis ossificans Single direct blow Repeated minor trauma Adductor longus-Rider’s bone Brachialis-Fencer’s bone Soleus-Dancer’s bone Blocker’s arm

Dr. Tudor H. Hughes M.D., FRCR Department of Radiology University of California School of Medicine San Diego, California 52F 8w post trauma

T2

Cor T1

T2 *

Myositis Ossificans Primary or Secondary to trauma Pseudo malignant ossification of soft tissue

Dr. Tudor H. Hughes M.D., FRCR Department of Radiology University of California School of Medicine San Diego, California 9M Swelling of arm

Infantile fibromatosis Rare, locally aggressive Usually sub Q Abdominal wall, buttocks, shoulder, upper arm, H+N ST mass, non calcified Periosteal reaction or pressure erosion