Surgical Treatment of Intramuscular, Infiltrating Lipoma

Abstract

Lipoma may occasionally be found within the muscle, which is the intramuscular, infiltrating lipoma. Intramuscular, infiltrating lipoma is an uncommon lesion, and local recurrence can be expected if the surgical margin is not clear. We report 8 patients in a 2-year period diagnosed with intramuscular, infiltrating lipoma who were treated by marginal excision combined with wide excision in the Department of Orthopaedic Surgery, Changhua Christian Hospital. The surgical results were satisfactory, and no local recurrence was noted in an average followup period of 40 months. Surgical excision is the best way to treat the symptomatic intramuscular, infiltrating lipoma. Careful preoperative evaluation and complete tumor excision with clear margins are most important to ensure successful surgical results.

Diffuse intramuscular lipoma responsible for monomelic hypertrophy

“…However, the recurrence rate for infiltrating lipomas has been reported to range between 3% and 62.5% (Su et al, 2011). This difference may be explained by inadequate resection of the tumor or misdiagnosing it as an intramuscular lipoma or by the fact that this type of lipoma is not always well circumscribed.…”

Intramuscular lipoma of the abductor digiti minimi mimicking intramuscular haemangioma

“…The deltoid is the second most frequent site 5. Surgical excision is the best way to treat the symptomatic intramuscular, infiltrating lipoma 6. The recurrence rate of intramuscular lipoma is high with reported recurrence rates of 3–62.5% 5.…”

“…The recurrence rate of intramuscular lipoma is high with reported recurrence rates of 3–62.5% 5. Careful preoperative evaluation and complete tumour excision with clear margins are most important to ensure successful surgical results 6. In order to avoid recurrence, infiltrating muscular lipomas, although benign, should be treated by total excision of the muscle or by compartmental resection 7 8.…”

Anatomical Distribution of Intramuscular Lipomas

“…Local recurrence may be evident if the surgical margin is not clear. They can occur in almost any anatomical site [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

“…Local recurrence may be evident if the surgical margin is not clear. They can occur in almost any anatomical site [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].Intramuscular lipomas of the head may involve the tongue, which is one of the most commonly involved sites [16][17][18][19][20][21][22][23][24] The chest wall [44,45] and the intercostal muscles [46] may also be involved. It may appear as a breast mass involving the pectoralis major [47][48][49] and may also involve the heart; involvement of the left ventricular myocardium, extending to the epicardial space; has also been reported [50].…”