Key result
Mammography and MRI can precisely delineate the anatomic location of ALT/WDL of the pectoralis major muscle, allowing for correct preoperative diagnosis and complete resection.
Case Report (n=1)
Mammography and MRI are essential for the accurate preoperative diagnosis and surgical planning of rare pectoralis major liposarcomas that masquerade as breast tumors.
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May facilitate preoperative planning for rare pectoralis liposarcomas; hypothesis-generating from single case, needs validation.
Atypical lipomatous tumor (ALT)/well-differentiated liposarcoma (WDL) of the pectoralis major muscle is an exceedingly rare clinical entity. We describe here a case of intramuscular ALT/WDL of the pectoralis major muscle in a female patient who presented with clinical manifestations of a rapidly growing breast tumor. Diagnostic evaluation and management of the patient are discussed along with a review of the relevant literature. We conclude that although the clinical examination may be inconclusive, the mammogram and especially the magnetic resonance imaging scan can precisely delineate the anatomic location and extent of the ALT/WDL of the pectoralis major muscle, thus allowing a correct preoperative diagnosis and adequate preoperative surgical planning. Complete resection is the treatment of choice for ALT/WDL. Long-term follow-up, however, remains mandatory because of the risk of local recurrence or delayed dedifferentiation.
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Nikolaos S. Salemis (2015) conducted a case report in Intramuscular atypical lipomatous tumor/well-differentiated liposarcoma of the pectoralis major muscle (n=1). Complete resection and diagnostic imaging was evaluated. Mammography and MRI can precisely delineate the anatomic location of ALT/WDL of the pectoralis major muscle, allowing for correct preoperative diagnosis and complete resection.
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