IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Intramuscular lipoma - latissimus dorsi

Case contributed by Bahman Rasuli
Diagnosis almost certain

Presentation

Right posterolateral thoracic wall painless mass sensation.

Patient Data

Age: 35 years
Gender: Female

Well-circumscribed, homogeneous high signal (T1/T2) mass measuring about 40*45*60 within the latissimus dorsi muscle on the right side that shows signal drop on fat suppression sequences

No evidence of thick septa, edematous changes, or local invasion.

Case Discussion

MRI features are highly suggestive of benign type intramuscular lipoma

The main differential diagnosis is liposarcoma: usually with thick septa, enhancement, or evidence of local invasion.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.