Encyclopedia of Pathology

Living Edition
| Editors: J.H.J.M. van Krieken

Intramuscular/Intermuscular Lipoma

Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-28845-1_5406-1



A benign tumor of mature adipocytes within (intramuscular) or between (intermuscular) skeletal muscles.

Clinical Features

  • Incidence

    Lipoma is the most common soft tissue tumor in the adulthood accounting for about one half of all soft tissue tumors (Myhre-Jensen 1981; Rydholm and Berg 1983). However, its real incidence may be underestimated. The frequency of lipoma seems to be higher in the obese population. Intramuscular/intermuscular lipoma accounts for less than 10% of all benign lipomas.

  • Age

    Intramuscular/intermuscular lipoma more frequently affects middle aged adults (usually between the fourth and sixth decades).

  • Sex

    There is a male predominance.

  • Site

    Intramuscular/intermuscular lipoma usually affects the large muscles of the thigh, shoulder, arm, and trunk.

  • Treatment

    Simple excision is the recommended treatment.

  • Outcome

    Intramuscular/intermuscular lipoma is benign with no capacity to dedifferentiate or metastasize....

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Authors and Affiliations

  1. 1.Padua University HospitalPaduaItaly