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SOFT TISSUE
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BONE TUMORS
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MULTIFOCAL LESIONS
Diffuse Sclerosis
Sclerotic lesions
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Lytic lesions




Neurilemmoma (Schwannoma)

Benign nerve sheath tumour of midddle age
Most often found as solitary mass tender to compression
Can be found anywhere from spinal roots to subcutaneous nerves

Imaging diagnosis usually easily established from relationship to the host nerve
Nerve and neural vessels leave the mass with a comet tail or spring onion appearance
May contain cystic areas



Neurifibroma

Usually obvious as associated with Neurofibromatosis
Younger patients than neurilemmoma
Lesion is more integral to host berve than neurilemmoma








Malignant Schwannoma

Half of patients have neurofibromatosis
Usually close to larger nerves
MRI for anatomy, PET for diagnosis of malignancy



Ancient Schwannoma

Large longstanding schwannoma
More complex elements including cystic degeneration and calcification
Benign

MPNST




Most common scanario is malignant degeneration in neurofibromatosis
Enlarging mass
Loss of organised stromal structure
Contrast MRI positive
PET may help detect malignant degeneration
GLOMUS TUMOR





Neuroectodermal tumour
Small lesions with typical clinical presentation
Nailbed lesion with point sensitivity
Cold reaction
Can occur elsewhere, be alert to clinical presentation










Additional images
MPNST image


MPNST image




MPNST pelvis image






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