Pectoralis major lipoma

Case contributed by Dr Heba Abdelmonem


Palpable swelling of the left anterior chest wall.

Patient Data

Gender: Male

An intramuscular lipoma of the left pectoralis major muscle

Case Discussion

Lipomas are common benign mesenchymal neoplasms composed of adipocytes that originate within the subcutaneous tissues. These tumors can arise from either within the muscle (intramuscular) or between the muscles (inter-muscular). Lipomas usually occur within the extremity muscles, such as the thigh and shoulder. Intramuscular pectoralis lipomas are a rarity.

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