Those strange lipomas!

This poster is published under an open license. Please read the disclaimer for further details.

Congress:

ECR 2015

Poster Number:

C-1498

Type:

Educational Exhibit

Keywords:

Tissue characterisation, Neoplasia, Diagnostic procedure, Ultrasound, MR, Oncology, Musculoskeletal soft tissue

Authors:

L. Simbula¹, A. De Marchi², S. Pozza², E. Brach del Prever², D. Molino², F. Cannone³, G. B. Meloni¹, A. Borre²; ¹Sassari/IT, ²Turin/IT, ³Catania/IT

DOI:

10.1594/ecr2015/C-1498

DOI-Link:

https://dx.doi.org/10.1594/ecr2015/C-1498

Fig. 1: LIPOMA-LIKE WELL-DIFFERENTIATED LIPOSARCOMAS: SUSPECT ELEMENTS - CASE A It's...

Fig. 5: INTRATENDINEOUS LIPOMAS Atypical locations of simple lipomas: sagittal TSE T1...

Fig. 2: LIPOMA-LIKE WELL-DIFFERENTIATED LIPOSARCOMAS: SUSPECT ELEMENTS - CASE B A 13...

Fig. 6: POSTERIOR INTEROSSEOUS NERVE SYNDROME DUE TO A SUPINATOR MUSCLE LIPOMA: A RARE...

Learning objectives

The aims of this study are to: analyze some atypical magnetic resonance imaging (MRI) and ultrasound (US) findings of musculoskeletal lipomatous tumours; assess simplelipomas within clinical situation.

Background

Lipomatous tumors are common findings in ultrasound and magnetic resonance imaging and constitute half of all soft-tissue tumors in surgical series. Among these tumors, it can be difficult to distinguish simple lipomas from well-differentiated liposarcomas through imaging, because they have got imaging similarities, although histologically different. Usually, higher grade liposarcomas do not appear ambiguous in MRI because they typically contain little or no macroscopic fat1,2. In accordance with World Health Organization, the term “atypical lipoma” refers to subcutaneous extremity or trunk lesions which arise at...

Findings and procedure details

We selected and analized with US/contrast-enhanced US and MRI/contrast-enhanced MRI six unusual clinical cases from the archives of Operative Unit of Diagnostic Radiology, C.T.O. Hospital, Turin:three lipoma-like well-differentiated liposarcomas,fat necrosis of a lipoma, an intratendineous lipomatosis, a posterior interosseous nerve syndrome caused by a supinator intramuscular lipoma. LIPOMA-LIKE WELL-DIFFERENTIATED LIPOSARCOMAS: SUSPECT ELEMENTS There are some clinical and imaging features helpful to identify well-differentiated liposarcomas1,2: patient age (middle-age); large lesion size; thickened septa (> 2 mm); nodular and/or globular areas of nonadipose tissue within the lesion;...

Conclusion

MRI and US findings are essential to the management of lipomatous tumours; atypical aspects must be underlined in order to increase the suspect level towardsmalignancy or to explain a clinical problem.

Personal information

References

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