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Open Access Publications from the University of California

Dermatology Online Journal

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Intramuscular lipoma of the scapular region


Intramuscular lipomas are rare, benign soft tissue neoplasms characterized by infiltrative growth into muscle tissue or between muscle fibers. These benign tumors can present similarly to malignant soft tissue neoplasms, such as liposarcomas. Unlike subcutaneous lipomas, intramuscular lipomas require diagnostic imaging to better distinguish the tumor and rule out alternative, malignant etiologies. It is imperative that dermatologists are able to identify this rare lipoma variant and have a thorough understanding of the diagnosis, imaging, and treatment options for this uncommon soft tissue tumor. Our case serves as a reminder for dermatologists to be cognizant of this rare tumor and aware of the importance of diagnostic testing in ruling out similarly-presenting, soft tissue malignancies.

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